Obstetrics

COVID-19 boosters are not linked to an increased chance of miscarriage, according to a new study in JAMA Network Open.

Researchers were seeking to learn whether a booster in early pregnancy, before 20 weeks, was associated with greater likelihood of spontaneous abortion.

They examined more than 100,000 pregnancies at 6-19 weeks from eight health systems in the Vaccine Safety Datalink (VSD). They found that receiving a COVID-19 booster shot in a 28-day or 42-day exposure window did not increase the chances of miscarriage.

“These findings support the safety of COVID-19 booster vaccination in early pregnancy,” they wrote.

The VSD is a collaboration between the Centers for Disease Control and Prevention’s Immunization Safety Office and large health care systems. The “observational, case-control, surveillance study” was conducted from Nov. 1, 2021, to June 12, 2022.

“COVID infection during pregnancy increases risk of poor outcomes, yet many people who are pregnant or thinking about getting pregnant are hesitant to get a booster dose because of questions about safety,” said Elyse Kharbanda, MD, senior investigator at HealthPartners Institute and lead author of the study in a press release.

The University of Minnesota reported that “previous studies have shown COIVD-19 primary vaccination is safe in pregnancy and not associated with an increased risk for miscarriage. Several studies have also shown COVID-19 can be more severe in pregnancy and lead to worse outcomes for the mother.”

The study was funded by the CDC. Five study authors reported conflicts of interest with Pfizer, Merck, GlaxoSmithKline, AbbVie, and Sanofi Pasteur.

A version of this article first appeared on Medscape.com.
 

COVID-19 boosters are not linked to an increased chance of miscarriage, according to a new study in JAMA Network Open.

Researchers were seeking to learn whether a booster in early pregnancy, before 20 weeks, was associated with greater likelihood of spontaneous abortion.

They examined more than 100,000 pregnancies at 6-19 weeks from eight health systems in the Vaccine Safety Datalink (VSD). They found that receiving a COVID-19 booster shot in a 28-day or 42-day exposure window did not increase the chances of miscarriage.

“These findings support the safety of COVID-19 booster vaccination in early pregnancy,” they wrote.

The VSD is a collaboration between the Centers for Disease Control and Prevention’s Immunization Safety Office and large health care systems. The “observational, case-control, surveillance study” was conducted from Nov. 1, 2021, to June 12, 2022.

“COVID infection during pregnancy increases risk of poor outcomes, yet many people who are pregnant or thinking about getting pregnant are hesitant to get a booster dose because of questions about safety,” said Elyse Kharbanda, MD, senior investigator at HealthPartners Institute and lead author of the study in a press release.

The University of Minnesota reported that “previous studies have shown COIVD-19 primary vaccination is safe in pregnancy and not associated with an increased risk for miscarriage. Several studies have also shown COVID-19 can be more severe in pregnancy and lead to worse outcomes for the mother.”

The study was funded by the CDC. Five study authors reported conflicts of interest with Pfizer, Merck, GlaxoSmithKline, AbbVie, and Sanofi Pasteur.

A version of this article first appeared on Medscape.com.
 

COVID-19 boosters are not linked to an increased chance of miscarriage, according to a new study in JAMA Network Open.

Researchers were seeking to learn whether a booster in early pregnancy, before 20 weeks, was associated with greater likelihood of spontaneous abortion.

They examined more than 100,000 pregnancies at 6-19 weeks from eight health systems in the Vaccine Safety Datalink (VSD). They found that receiving a COVID-19 booster shot in a 28-day or 42-day exposure window did not increase the chances of miscarriage.

“These findings support the safety of COVID-19 booster vaccination in early pregnancy,” they wrote.

The VSD is a collaboration between the Centers for Disease Control and Prevention’s Immunization Safety Office and large health care systems. The “observational, case-control, surveillance study” was conducted from Nov. 1, 2021, to June 12, 2022.

“COVID infection during pregnancy increases risk of poor outcomes, yet many people who are pregnant or thinking about getting pregnant are hesitant to get a booster dose because of questions about safety,” said Elyse Kharbanda, MD, senior investigator at HealthPartners Institute and lead author of the study in a press release.

The University of Minnesota reported that “previous studies have shown COIVD-19 primary vaccination is safe in pregnancy and not associated with an increased risk for miscarriage. Several studies have also shown COVID-19 can be more severe in pregnancy and lead to worse outcomes for the mother.”

The study was funded by the CDC. Five study authors reported conflicts of interest with Pfizer, Merck, GlaxoSmithKline, AbbVie, and Sanofi Pasteur.

A version of this article first appeared on Medscape.com.
 

BALTIMORE – Training hospitals that have state or institutional abortion restrictions are less likely to follow the evidence-based standard of care in diagnosing and managing miscarriages, including taking patient preferences into account, according to a cross-sectional study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists and published in Obstetrics & Gynecology.

The results revealed that “abortion restrictions have far-reaching effects on early pregnancy loss care and on resident education,” the researchers concluded.

“Abortion restrictions don’t just affect people seeking abortions; they affect people also suffering from early pregnancy loss,” Aurora Phillips, MD, an ob.gyn. resident at Albany (N.Y.) Medical Center, said in an interview. “It’s harder to make that diagnosis and to be able to offer interventions, and these institutions that had restrictions also were less likely to have mifepristone or office based human aspiration, which are the most efficient and cost-effective interventions that we have.”

For example, less than half the programs surveyed offered mifepristone to help manage a miscarriage, “with availability varying inversely with abortion restrictions,” they found. After considering all characteristics of residency programs, “institutional abortion restrictions and bans were more important than state policies or religious affiliation in determining whether evidence-based early pregnancy loss treatments were available,” the researchers found, though their findings predated the Supreme Court’s Dobbs ruling that overturned Roe v. Wade. “Training institutions with a commitment to evidence-based family planning care and education are able to ensure access to the most evidence-based, cost-effective, and timely treatments for pregnancy loss even in the face of state abortion restrictions, thereby preserving patient safety, physician competency, and health care system sustainability,” they wrote.
 

Reduced access leads to higher risk interventions

An estimated 10%-20% of pregnancies result in early miscarriage, totaling more than one million cases in the U.S. each year. But since treatments for miscarriage often overlap with those for abortion, the researchers wondered whether differences existed in how providers managed miscarriages in states or institutions with strict abortion restrictions versus management in hospitals without restrictions.

They also looked at how closely the management strategies adhered to ACOG’s recommendations, which advise that providers consider both ultrasound imaging and other factors, including clinical reasoning and patient preferences, before diagnosing early pregnancy loss and considering possible interventions.

For imaging guidelines, ACOG endorses the criteria established for ultrasound diagnosis of first trimester pregnancy loss from the Society of Radiologists in 2012. But, the authors note, these guidelines are very conservative, exceeding previous measurements that had a 99%-100% predictive value for pregnancy loss, in the interest of “[prioritizing preservation of] fetal potential over facilitating expeditious care.” Hence the reason ACOG advises providers to include clinical judgment and patient preferences in their approach to care.

”In places where abortion is heavily regulated, clinicians managing miscarriages may cautiously rely on the strictest criteria to differentiate early pregnancy loss from potentially viable pregnancy and may not offer certain treatments commonly associated with abortion,” the authors noted. ACOG recommends surgical aspiration and medical treatment with both mifepristone and misoprostol as the safest and most effective options in managing miscarriages.

“Treating early pregnancy loss without the use of mifepristone is more likely to fail, is more likely to require an unscheduled procedure, and people who choose medication management for their miscarriages are usually trying to avoid a procedure, so that is the downside of not using mifepristone,” coauthor Rachel M. Flink-Bochacki, MD, an associate professor at Albany (N.Y.) Medical Center, said in an interview.

“Office-based uterine aspiration has the same safety profile as uterine aspiration in the operating room minus the risks of anesthesia and also helps patients get in faster because they don’t need to wait for OR time,” Dr. Flink-Bochacki explained. “So again, for a patient who wants an aspiration and does not want to pass the pregnancy at home, not having access to office-based aspiration could lead them to miscarry at home, which has higher risks and is not what they wanted.”
 

Reduced access to miscarriage care options in ‘hostile’ states

Among all 296 U.S. ob.gyn. residency programs that were contacted between November 2021 and January 2022, half (50.3%) responded to the researchers’ survey about their institutional practices around miscarriage, including location of diagnosis, use of ultrasound diagnostic guidelines, treatment options offered by their institution, and institutional restrictions on abortions based on indication.

The survey also collected characteristics of each program, including its state, setting, religious affiliation, and affiliation with the Ryan Training Program in Abortion and Family Planning. The responding sample had similar geographic distribution and state abortion policies as those who did not respond, but the responding programs were slightly more likely to be academic programs and to be affiliated with the Ryan program.

At the time of the study, prior to the Dobbs ruling, more than half the U.S. states had legislation restricting abortion care, and 57% of national teaching hospitals had internal restrictions that limited care based on gestational age and indication, particularly if the indication was elective, the authors reported. The researchers relied on designations from the Guttmacher Institute in December 2020 to categorize states as “hostile” to abortion (very hostile, hostile, and leans hostile) or non-hostile (neutral, leans supportive, supportive, and very supportive).

Most of the programs (80%) had no religious affiliation, but 11% had a Catholic affiliation and 5% had a different Christian affiliation. Institutional policies either had no restrictions on abortion care (38%), had restrictions (39%) based on certain maternal or fetal indications, or completely banned abortion services unless the mother’s life was threatened (23%). Among the Christian-affiliated programs, 60% had bans and 40% had restrictions.

Half (49.7%) of the responding programs relied rigidly on ultrasound criteria before offering any intervention for suspected early pregnancy loss, regardless of patient preferences. The other half (50.3%) incorporated ultrasound criteria and other factors, including clinical judgment and patient preferences, into a holistic determination of what options to present to the patient.

Before accounting for other factors, the researchers found that only a third (33%) of programs in states with severe abortion restrictions considered additional factors besides imaging when offering patients options for miscarriage management. In states without such abortion restrictions, 79% of programs considered both imaging and other factors (P < .001).

In states with “hostile abortion legislation,” only 32% of the programs used mifepristone for miscarriage management, compared with 75% of the programs in states without onerous abortion restrictions (P < .001). The results were similar for use of office-based suction aspiration: Just under half the programs (48%) in states with severe abortion restrictions included this technique as part of standard miscarriage management, compared with 68% of programs in states without such restrictions (P = .014).

Those findings match up with the experience of Cara Heuser, MD, a maternal-fetal medicine specialist from Salt Lake City, who was not involved in this study.

“We had a lot of restrictions even before Roe fell,” including heavy regulation of mifepristone, Dr. Heuser said in an interview. “In non-restricted states, it’s pretty easy to get, but even before Roe in our state, it was very, very difficult to get institutions and individual doctor’s offices to carry mifepristone to treat miscarriages. They were still treating miscarriages in a way that was known to be less effective.” Adding mifepristone to misoprostol reduces the risk of needing an evacuation surgery procedure, she explained, “so adding the mifepristone makes it safer.”
 

Institutional policies had the strongest impact

Before accounting for the state a hospital was in, 27% of institutions with restrictive abortion policies looked at more than imaging in determining how to proceed, compared with 88% of institutions without abortion restrictions that included clinical judgment and patient preferences in their management.

After controlling for state policies and affiliation with a family planning training program or a religious entity, the odds of an institution relying solely on imaging guidelines were over 12 times greater for institutions with abortion restrictions or bans (odds ratio, 12.3; 95% confidence interval, 3.2-47.9). Specifically, the odds were 9 times greater for institutions with restrictions and 27 times greater for institutions with bans.

Only 12% of the institutions without restrictions relied solely on ultrasound criteria, compared with 67% of the institutions with restrictions and 82% of the institutions that banned all abortions except to save the life of the pregnant individual (P < .001).

Only one in four (25%) of the programs with institutional abortion restrictions used mifepristone, compared with 86% of unrestricted programs (P < .001), and 40% of programs with institutional abortion restrictions used office-based aspiration, compared with 81% of unrestricted programs (P < .001).

Without access to all evidence-based treatments, doctors are often forced to choose expectant management for miscarriages. “So you’re kind of forced to have them to pass the pregnancy at home, which can be traumatic for patients” if that’s not what they wanted, Dr. Phillips said.

Dr. Flink-Bochacki further noted that this patient population is already particularly vulnerable.

“Especially for patients with early pregnancy loss, it’s such a feeling of powerlessness already, so the mental state that many of these patients are in is already quite fraught,” Dr. Flink-Bochacki said. “Then to not even have power to choose the interventions that you want or to be able to access interventions in a timely fashion because you’re being held to some arbitrary guideline further takes away the power and further exacerbates the trauma of the experience.”

The biggest factor likely driving the reduced access to those interventions is the fear that the care could be confused with providing an abortion instead of simply managing a miscarriage, Dr. Flink-Bochacki said. “I think that’s why a lot of these programs don’t have mifepristone and don’t offer outpatient uterine aspiration,” she said. “Because those are so widely used in abortion and the connotation is with abortion, they’re just kind of steering clear of it, but meanwhile, patients with pregnancy loss are suffering because they’re being unnecessarily restrictive.”

The research did not use any external funding, and the authors and Dr. Heuser had no disclosures.

BALTIMORE – Training hospitals that have state or institutional abortion restrictions are less likely to follow the evidence-based standard of care in diagnosing and managing miscarriages, including taking patient preferences into account, according to a cross-sectional study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists and published in Obstetrics & Gynecology.

The results revealed that “abortion restrictions have far-reaching effects on early pregnancy loss care and on resident education,” the researchers concluded.

“Abortion restrictions don’t just affect people seeking abortions; they affect people also suffering from early pregnancy loss,” Aurora Phillips, MD, an ob.gyn. resident at Albany (N.Y.) Medical Center, said in an interview. “It’s harder to make that diagnosis and to be able to offer interventions, and these institutions that had restrictions also were less likely to have mifepristone or office based human aspiration, which are the most efficient and cost-effective interventions that we have.”

For example, less than half the programs surveyed offered mifepristone to help manage a miscarriage, “with availability varying inversely with abortion restrictions,” they found. After considering all characteristics of residency programs, “institutional abortion restrictions and bans were more important than state policies or religious affiliation in determining whether evidence-based early pregnancy loss treatments were available,” the researchers found, though their findings predated the Supreme Court’s Dobbs ruling that overturned Roe v. Wade. “Training institutions with a commitment to evidence-based family planning care and education are able to ensure access to the most evidence-based, cost-effective, and timely treatments for pregnancy loss even in the face of state abortion restrictions, thereby preserving patient safety, physician competency, and health care system sustainability,” they wrote.
 

Reduced access leads to higher risk interventions

An estimated 10%-20% of pregnancies result in early miscarriage, totaling more than one million cases in the U.S. each year. But since treatments for miscarriage often overlap with those for abortion, the researchers wondered whether differences existed in how providers managed miscarriages in states or institutions with strict abortion restrictions versus management in hospitals without restrictions.

They also looked at how closely the management strategies adhered to ACOG’s recommendations, which advise that providers consider both ultrasound imaging and other factors, including clinical reasoning and patient preferences, before diagnosing early pregnancy loss and considering possible interventions.

For imaging guidelines, ACOG endorses the criteria established for ultrasound diagnosis of first trimester pregnancy loss from the Society of Radiologists in 2012. But, the authors note, these guidelines are very conservative, exceeding previous measurements that had a 99%-100% predictive value for pregnancy loss, in the interest of “[prioritizing preservation of] fetal potential over facilitating expeditious care.” Hence the reason ACOG advises providers to include clinical judgment and patient preferences in their approach to care.

”In places where abortion is heavily regulated, clinicians managing miscarriages may cautiously rely on the strictest criteria to differentiate early pregnancy loss from potentially viable pregnancy and may not offer certain treatments commonly associated with abortion,” the authors noted. ACOG recommends surgical aspiration and medical treatment with both mifepristone and misoprostol as the safest and most effective options in managing miscarriages.

“Treating early pregnancy loss without the use of mifepristone is more likely to fail, is more likely to require an unscheduled procedure, and people who choose medication management for their miscarriages are usually trying to avoid a procedure, so that is the downside of not using mifepristone,” coauthor Rachel M. Flink-Bochacki, MD, an associate professor at Albany (N.Y.) Medical Center, said in an interview.

“Office-based uterine aspiration has the same safety profile as uterine aspiration in the operating room minus the risks of anesthesia and also helps patients get in faster because they don’t need to wait for OR time,” Dr. Flink-Bochacki explained. “So again, for a patient who wants an aspiration and does not want to pass the pregnancy at home, not having access to office-based aspiration could lead them to miscarry at home, which has higher risks and is not what they wanted.”
 

Reduced access to miscarriage care options in ‘hostile’ states

Among all 296 U.S. ob.gyn. residency programs that were contacted between November 2021 and January 2022, half (50.3%) responded to the researchers’ survey about their institutional practices around miscarriage, including location of diagnosis, use of ultrasound diagnostic guidelines, treatment options offered by their institution, and institutional restrictions on abortions based on indication.

The survey also collected characteristics of each program, including its state, setting, religious affiliation, and affiliation with the Ryan Training Program in Abortion and Family Planning. The responding sample had similar geographic distribution and state abortion policies as those who did not respond, but the responding programs were slightly more likely to be academic programs and to be affiliated with the Ryan program.

At the time of the study, prior to the Dobbs ruling, more than half the U.S. states had legislation restricting abortion care, and 57% of national teaching hospitals had internal restrictions that limited care based on gestational age and indication, particularly if the indication was elective, the authors reported. The researchers relied on designations from the Guttmacher Institute in December 2020 to categorize states as “hostile” to abortion (very hostile, hostile, and leans hostile) or non-hostile (neutral, leans supportive, supportive, and very supportive).

Most of the programs (80%) had no religious affiliation, but 11% had a Catholic affiliation and 5% had a different Christian affiliation. Institutional policies either had no restrictions on abortion care (38%), had restrictions (39%) based on certain maternal or fetal indications, or completely banned abortion services unless the mother’s life was threatened (23%). Among the Christian-affiliated programs, 60% had bans and 40% had restrictions.

Half (49.7%) of the responding programs relied rigidly on ultrasound criteria before offering any intervention for suspected early pregnancy loss, regardless of patient preferences. The other half (50.3%) incorporated ultrasound criteria and other factors, including clinical judgment and patient preferences, into a holistic determination of what options to present to the patient.

Before accounting for other factors, the researchers found that only a third (33%) of programs in states with severe abortion restrictions considered additional factors besides imaging when offering patients options for miscarriage management. In states without such abortion restrictions, 79% of programs considered both imaging and other factors (P < .001).

In states with “hostile abortion legislation,” only 32% of the programs used mifepristone for miscarriage management, compared with 75% of the programs in states without onerous abortion restrictions (P < .001). The results were similar for use of office-based suction aspiration: Just under half the programs (48%) in states with severe abortion restrictions included this technique as part of standard miscarriage management, compared with 68% of programs in states without such restrictions (P = .014).

Those findings match up with the experience of Cara Heuser, MD, a maternal-fetal medicine specialist from Salt Lake City, who was not involved in this study.

“We had a lot of restrictions even before Roe fell,” including heavy regulation of mifepristone, Dr. Heuser said in an interview. “In non-restricted states, it’s pretty easy to get, but even before Roe in our state, it was very, very difficult to get institutions and individual doctor’s offices to carry mifepristone to treat miscarriages. They were still treating miscarriages in a way that was known to be less effective.” Adding mifepristone to misoprostol reduces the risk of needing an evacuation surgery procedure, she explained, “so adding the mifepristone makes it safer.”
 

Institutional policies had the strongest impact

Before accounting for the state a hospital was in, 27% of institutions with restrictive abortion policies looked at more than imaging in determining how to proceed, compared with 88% of institutions without abortion restrictions that included clinical judgment and patient preferences in their management.

After controlling for state policies and affiliation with a family planning training program or a religious entity, the odds of an institution relying solely on imaging guidelines were over 12 times greater for institutions with abortion restrictions or bans (odds ratio, 12.3; 95% confidence interval, 3.2-47.9). Specifically, the odds were 9 times greater for institutions with restrictions and 27 times greater for institutions with bans.

Only 12% of the institutions without restrictions relied solely on ultrasound criteria, compared with 67% of the institutions with restrictions and 82% of the institutions that banned all abortions except to save the life of the pregnant individual (P < .001).

Only one in four (25%) of the programs with institutional abortion restrictions used mifepristone, compared with 86% of unrestricted programs (P < .001), and 40% of programs with institutional abortion restrictions used office-based aspiration, compared with 81% of unrestricted programs (P < .001).

Without access to all evidence-based treatments, doctors are often forced to choose expectant management for miscarriages. “So you’re kind of forced to have them to pass the pregnancy at home, which can be traumatic for patients” if that’s not what they wanted, Dr. Phillips said.

Dr. Flink-Bochacki further noted that this patient population is already particularly vulnerable.

“Especially for patients with early pregnancy loss, it’s such a feeling of powerlessness already, so the mental state that many of these patients are in is already quite fraught,” Dr. Flink-Bochacki said. “Then to not even have power to choose the interventions that you want or to be able to access interventions in a timely fashion because you’re being held to some arbitrary guideline further takes away the power and further exacerbates the trauma of the experience.”

The biggest factor likely driving the reduced access to those interventions is the fear that the care could be confused with providing an abortion instead of simply managing a miscarriage, Dr. Flink-Bochacki said. “I think that’s why a lot of these programs don’t have mifepristone and don’t offer outpatient uterine aspiration,” she said. “Because those are so widely used in abortion and the connotation is with abortion, they’re just kind of steering clear of it, but meanwhile, patients with pregnancy loss are suffering because they’re being unnecessarily restrictive.”

The research did not use any external funding, and the authors and Dr. Heuser had no disclosures.

BALTIMORE – Training hospitals that have state or institutional abortion restrictions are less likely to follow the evidence-based standard of care in diagnosing and managing miscarriages, including taking patient preferences into account, according to a cross-sectional study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists and published in Obstetrics & Gynecology.

The results revealed that “abortion restrictions have far-reaching effects on early pregnancy loss care and on resident education,” the researchers concluded.

“Abortion restrictions don’t just affect people seeking abortions; they affect people also suffering from early pregnancy loss,” Aurora Phillips, MD, an ob.gyn. resident at Albany (N.Y.) Medical Center, said in an interview. “It’s harder to make that diagnosis and to be able to offer interventions, and these institutions that had restrictions also were less likely to have mifepristone or office based human aspiration, which are the most efficient and cost-effective interventions that we have.”

For example, less than half the programs surveyed offered mifepristone to help manage a miscarriage, “with availability varying inversely with abortion restrictions,” they found. After considering all characteristics of residency programs, “institutional abortion restrictions and bans were more important than state policies or religious affiliation in determining whether evidence-based early pregnancy loss treatments were available,” the researchers found, though their findings predated the Supreme Court’s Dobbs ruling that overturned Roe v. Wade. “Training institutions with a commitment to evidence-based family planning care and education are able to ensure access to the most evidence-based, cost-effective, and timely treatments for pregnancy loss even in the face of state abortion restrictions, thereby preserving patient safety, physician competency, and health care system sustainability,” they wrote.
 

Reduced access leads to higher risk interventions

An estimated 10%-20% of pregnancies result in early miscarriage, totaling more than one million cases in the U.S. each year. But since treatments for miscarriage often overlap with those for abortion, the researchers wondered whether differences existed in how providers managed miscarriages in states or institutions with strict abortion restrictions versus management in hospitals without restrictions.

They also looked at how closely the management strategies adhered to ACOG’s recommendations, which advise that providers consider both ultrasound imaging and other factors, including clinical reasoning and patient preferences, before diagnosing early pregnancy loss and considering possible interventions.

For imaging guidelines, ACOG endorses the criteria established for ultrasound diagnosis of first trimester pregnancy loss from the Society of Radiologists in 2012. But, the authors note, these guidelines are very conservative, exceeding previous measurements that had a 99%-100% predictive value for pregnancy loss, in the interest of “[prioritizing preservation of] fetal potential over facilitating expeditious care.” Hence the reason ACOG advises providers to include clinical judgment and patient preferences in their approach to care.

”In places where abortion is heavily regulated, clinicians managing miscarriages may cautiously rely on the strictest criteria to differentiate early pregnancy loss from potentially viable pregnancy and may not offer certain treatments commonly associated with abortion,” the authors noted. ACOG recommends surgical aspiration and medical treatment with both mifepristone and misoprostol as the safest and most effective options in managing miscarriages.

“Treating early pregnancy loss without the use of mifepristone is more likely to fail, is more likely to require an unscheduled procedure, and people who choose medication management for their miscarriages are usually trying to avoid a procedure, so that is the downside of not using mifepristone,” coauthor Rachel M. Flink-Bochacki, MD, an associate professor at Albany (N.Y.) Medical Center, said in an interview.

“Office-based uterine aspiration has the same safety profile as uterine aspiration in the operating room minus the risks of anesthesia and also helps patients get in faster because they don’t need to wait for OR time,” Dr. Flink-Bochacki explained. “So again, for a patient who wants an aspiration and does not want to pass the pregnancy at home, not having access to office-based aspiration could lead them to miscarry at home, which has higher risks and is not what they wanted.”
 

Reduced access to miscarriage care options in ‘hostile’ states

Among all 296 U.S. ob.gyn. residency programs that were contacted between November 2021 and January 2022, half (50.3%) responded to the researchers’ survey about their institutional practices around miscarriage, including location of diagnosis, use of ultrasound diagnostic guidelines, treatment options offered by their institution, and institutional restrictions on abortions based on indication.

The survey also collected characteristics of each program, including its state, setting, religious affiliation, and affiliation with the Ryan Training Program in Abortion and Family Planning. The responding sample had similar geographic distribution and state abortion policies as those who did not respond, but the responding programs were slightly more likely to be academic programs and to be affiliated with the Ryan program.

At the time of the study, prior to the Dobbs ruling, more than half the U.S. states had legislation restricting abortion care, and 57% of national teaching hospitals had internal restrictions that limited care based on gestational age and indication, particularly if the indication was elective, the authors reported. The researchers relied on designations from the Guttmacher Institute in December 2020 to categorize states as “hostile” to abortion (very hostile, hostile, and leans hostile) or non-hostile (neutral, leans supportive, supportive, and very supportive).

Most of the programs (80%) had no religious affiliation, but 11% had a Catholic affiliation and 5% had a different Christian affiliation. Institutional policies either had no restrictions on abortion care (38%), had restrictions (39%) based on certain maternal or fetal indications, or completely banned abortion services unless the mother’s life was threatened (23%). Among the Christian-affiliated programs, 60% had bans and 40% had restrictions.

Half (49.7%) of the responding programs relied rigidly on ultrasound criteria before offering any intervention for suspected early pregnancy loss, regardless of patient preferences. The other half (50.3%) incorporated ultrasound criteria and other factors, including clinical judgment and patient preferences, into a holistic determination of what options to present to the patient.

Before accounting for other factors, the researchers found that only a third (33%) of programs in states with severe abortion restrictions considered additional factors besides imaging when offering patients options for miscarriage management. In states without such abortion restrictions, 79% of programs considered both imaging and other factors (P < .001).

In states with “hostile abortion legislation,” only 32% of the programs used mifepristone for miscarriage management, compared with 75% of the programs in states without onerous abortion restrictions (P < .001). The results were similar for use of office-based suction aspiration: Just under half the programs (48%) in states with severe abortion restrictions included this technique as part of standard miscarriage management, compared with 68% of programs in states without such restrictions (P = .014).

Those findings match up with the experience of Cara Heuser, MD, a maternal-fetal medicine specialist from Salt Lake City, who was not involved in this study.

“We had a lot of restrictions even before Roe fell,” including heavy regulation of mifepristone, Dr. Heuser said in an interview. “In non-restricted states, it’s pretty easy to get, but even before Roe in our state, it was very, very difficult to get institutions and individual doctor’s offices to carry mifepristone to treat miscarriages. They were still treating miscarriages in a way that was known to be less effective.” Adding mifepristone to misoprostol reduces the risk of needing an evacuation surgery procedure, she explained, “so adding the mifepristone makes it safer.”
 

Institutional policies had the strongest impact

Before accounting for the state a hospital was in, 27% of institutions with restrictive abortion policies looked at more than imaging in determining how to proceed, compared with 88% of institutions without abortion restrictions that included clinical judgment and patient preferences in their management.

After controlling for state policies and affiliation with a family planning training program or a religious entity, the odds of an institution relying solely on imaging guidelines were over 12 times greater for institutions with abortion restrictions or bans (odds ratio, 12.3; 95% confidence interval, 3.2-47.9). Specifically, the odds were 9 times greater for institutions with restrictions and 27 times greater for institutions with bans.

Only 12% of the institutions without restrictions relied solely on ultrasound criteria, compared with 67% of the institutions with restrictions and 82% of the institutions that banned all abortions except to save the life of the pregnant individual (P < .001).

Only one in four (25%) of the programs with institutional abortion restrictions used mifepristone, compared with 86% of unrestricted programs (P < .001), and 40% of programs with institutional abortion restrictions used office-based aspiration, compared with 81% of unrestricted programs (P < .001).

Without access to all evidence-based treatments, doctors are often forced to choose expectant management for miscarriages. “So you’re kind of forced to have them to pass the pregnancy at home, which can be traumatic for patients” if that’s not what they wanted, Dr. Phillips said.

Dr. Flink-Bochacki further noted that this patient population is already particularly vulnerable.

“Especially for patients with early pregnancy loss, it’s such a feeling of powerlessness already, so the mental state that many of these patients are in is already quite fraught,” Dr. Flink-Bochacki said. “Then to not even have power to choose the interventions that you want or to be able to access interventions in a timely fashion because you’re being held to some arbitrary guideline further takes away the power and further exacerbates the trauma of the experience.”

The biggest factor likely driving the reduced access to those interventions is the fear that the care could be confused with providing an abortion instead of simply managing a miscarriage, Dr. Flink-Bochacki said. “I think that’s why a lot of these programs don’t have mifepristone and don’t offer outpatient uterine aspiration,” she said. “Because those are so widely used in abortion and the connotation is with abortion, they’re just kind of steering clear of it, but meanwhile, patients with pregnancy loss are suffering because they’re being unnecessarily restrictive.”

The research did not use any external funding, and the authors and Dr. Heuser had no disclosures.

Women with Sjögren’s syndrome have pregnancy outcomes similar to those of the general population, according to the first study to prospectively track pregnancy outcomes among people with the autoimmune condition.

“Most early studies of pregnancy in rheumatic disease patients were retrospective and included only small numbers, making it difficult to know how generalizable the reported results were,” said Lisa Sammaritano, MD, a rheumatologist at Hospital for Special Surgery in New York, in an email interview with this news organization. She was not involved with the research.

Most of these previous studies suggested an increased risk of adverse outcomes, such as miscarriages, preterm deliveries, and small-for-gestational-age birth weight. But in addition to small patient numbers, retrospective studies “are subject to greater reporting bias, which may predispose patients with negative outcomes being more likely to be included because they were followed more closely,” Dr. Sammaritano said.

“This prospective study has several advantages over the earlier retrospective reports: The same data were collected in the same way for all the patients, the patients were recruited at similar time points, and – due to the multicenter nature of the cohort – numbers are larger than in prior studies. All these factors make the results stronger and more generalizable to the Sjögren’s patients we see in our practices,” she added.

In the study, published May 8 in The Lancet Rheumatology, first author Grégoire Martin de Frémont, MD, of the rheumatology service at Bicêtre Hospital, Paris-Saclay University and colleagues used the GR2 registry, an observational database of pregnancies of women with systemic autoimmune diseases managed at 76 participating centers in France, to identify pregnant women with primary Sjögren’s syndrome. To avoid bias, only women who entered the database before 18 weeks’ gestation were included. The final cohort included 106 pregnancies in 96 women with primary Sjögren’s syndrome and 420 control pregnancies that were matched from the general population.

Adverse pregnancy outcomes, including preterm delivery (< 37 weeks of gestation), intrauterine growth retardation, and low birth weight occurred in nine pregnancies (9%) in the Sjögren’s syndrome group and in 28 pregnancies in the control group (7%). Adverse pregnancy outcomes were not significantly associated with Sjögren’s syndrome (P = .52). Researchers found that there were more adverse pregnancy outcomes among women with Sjögren’s syndrome with antiphospholipid (aPL) antibodies. Negative outcomes also increased among those with anti-RNP antibodies, but this association was not statistically significant.

“The main message – based on strong data from a well-designed study – is that patients with Sjögren’s overall do as well as the general population in terms of standard adverse pregnancy outcomes. The rate of flare of Sjögren’s disease was relatively low during the second and third trimesters, also reassuring,” Dr. Sammaritano said. She noted that the association between adverse pregnancy outcomes and aPL antibodies was not unexpected, given that they are a known risk factor.

The study authors recommend that patients with Sjögren’s syndrome be screened for aPL and anti-RNP antibodies prior to conception because of the potential increased risk for complications and that patients with positive screens be closely monitored during their pregnancy.

Dr. Sammaritano noted that there are other health problems to keep in mind. “It is important to remember that Sjögren’s patients – more than any other rheumatic disease patients – have the additional risk for neonatal lupus and complete heart block in their infant, since about two-thirds of Sjögren’s patients are positive for anti-Ro/SSA antibody,” she said. “This is a distinct issue related to the presence of this antibody alone and not specifically related to the underlying diagnosis. In clinical practice, positive anti-Ro/SSA antibody is often the main reason for counseling, monitoring, and even recommending therapy (hydroxychloroquine) in these patients.”

The study received funding from Lupus France, the France Association of Scleroderma, and the Association Gougerot Sjögren, among others. Dr. Sammaritano reports no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Women with Sjögren’s syndrome have pregnancy outcomes similar to those of the general population, according to the first study to prospectively track pregnancy outcomes among people with the autoimmune condition.

“Most early studies of pregnancy in rheumatic disease patients were retrospective and included only small numbers, making it difficult to know how generalizable the reported results were,” said Lisa Sammaritano, MD, a rheumatologist at Hospital for Special Surgery in New York, in an email interview with this news organization. She was not involved with the research.

Most of these previous studies suggested an increased risk of adverse outcomes, such as miscarriages, preterm deliveries, and small-for-gestational-age birth weight. But in addition to small patient numbers, retrospective studies “are subject to greater reporting bias, which may predispose patients with negative outcomes being more likely to be included because they were followed more closely,” Dr. Sammaritano said.

“This prospective study has several advantages over the earlier retrospective reports: The same data were collected in the same way for all the patients, the patients were recruited at similar time points, and – due to the multicenter nature of the cohort – numbers are larger than in prior studies. All these factors make the results stronger and more generalizable to the Sjögren’s patients we see in our practices,” she added.

In the study, published May 8 in The Lancet Rheumatology, first author Grégoire Martin de Frémont, MD, of the rheumatology service at Bicêtre Hospital, Paris-Saclay University and colleagues used the GR2 registry, an observational database of pregnancies of women with systemic autoimmune diseases managed at 76 participating centers in France, to identify pregnant women with primary Sjögren’s syndrome. To avoid bias, only women who entered the database before 18 weeks’ gestation were included. The final cohort included 106 pregnancies in 96 women with primary Sjögren’s syndrome and 420 control pregnancies that were matched from the general population.

Adverse pregnancy outcomes, including preterm delivery (< 37 weeks of gestation), intrauterine growth retardation, and low birth weight occurred in nine pregnancies (9%) in the Sjögren’s syndrome group and in 28 pregnancies in the control group (7%). Adverse pregnancy outcomes were not significantly associated with Sjögren’s syndrome (P = .52). Researchers found that there were more adverse pregnancy outcomes among women with Sjögren’s syndrome with antiphospholipid (aPL) antibodies. Negative outcomes also increased among those with anti-RNP antibodies, but this association was not statistically significant.

“The main message – based on strong data from a well-designed study – is that patients with Sjögren’s overall do as well as the general population in terms of standard adverse pregnancy outcomes. The rate of flare of Sjögren’s disease was relatively low during the second and third trimesters, also reassuring,” Dr. Sammaritano said. She noted that the association between adverse pregnancy outcomes and aPL antibodies was not unexpected, given that they are a known risk factor.

The study authors recommend that patients with Sjögren’s syndrome be screened for aPL and anti-RNP antibodies prior to conception because of the potential increased risk for complications and that patients with positive screens be closely monitored during their pregnancy.

Dr. Sammaritano noted that there are other health problems to keep in mind. “It is important to remember that Sjögren’s patients – more than any other rheumatic disease patients – have the additional risk for neonatal lupus and complete heart block in their infant, since about two-thirds of Sjögren’s patients are positive for anti-Ro/SSA antibody,” she said. “This is a distinct issue related to the presence of this antibody alone and not specifically related to the underlying diagnosis. In clinical practice, positive anti-Ro/SSA antibody is often the main reason for counseling, monitoring, and even recommending therapy (hydroxychloroquine) in these patients.”

The study received funding from Lupus France, the France Association of Scleroderma, and the Association Gougerot Sjögren, among others. Dr. Sammaritano reports no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Women with Sjögren’s syndrome have pregnancy outcomes similar to those of the general population, according to the first study to prospectively track pregnancy outcomes among people with the autoimmune condition.

“Most early studies of pregnancy in rheumatic disease patients were retrospective and included only small numbers, making it difficult to know how generalizable the reported results were,” said Lisa Sammaritano, MD, a rheumatologist at Hospital for Special Surgery in New York, in an email interview with this news organization. She was not involved with the research.

Most of these previous studies suggested an increased risk of adverse outcomes, such as miscarriages, preterm deliveries, and small-for-gestational-age birth weight. But in addition to small patient numbers, retrospective studies “are subject to greater reporting bias, which may predispose patients with negative outcomes being more likely to be included because they were followed more closely,” Dr. Sammaritano said.

“This prospective study has several advantages over the earlier retrospective reports: The same data were collected in the same way for all the patients, the patients were recruited at similar time points, and – due to the multicenter nature of the cohort – numbers are larger than in prior studies. All these factors make the results stronger and more generalizable to the Sjögren’s patients we see in our practices,” she added.

In the study, published May 8 in The Lancet Rheumatology, first author Grégoire Martin de Frémont, MD, of the rheumatology service at Bicêtre Hospital, Paris-Saclay University and colleagues used the GR2 registry, an observational database of pregnancies of women with systemic autoimmune diseases managed at 76 participating centers in France, to identify pregnant women with primary Sjögren’s syndrome. To avoid bias, only women who entered the database before 18 weeks’ gestation were included. The final cohort included 106 pregnancies in 96 women with primary Sjögren’s syndrome and 420 control pregnancies that were matched from the general population.

Adverse pregnancy outcomes, including preterm delivery (< 37 weeks of gestation), intrauterine growth retardation, and low birth weight occurred in nine pregnancies (9%) in the Sjögren’s syndrome group and in 28 pregnancies in the control group (7%). Adverse pregnancy outcomes were not significantly associated with Sjögren’s syndrome (P = .52). Researchers found that there were more adverse pregnancy outcomes among women with Sjögren’s syndrome with antiphospholipid (aPL) antibodies. Negative outcomes also increased among those with anti-RNP antibodies, but this association was not statistically significant.

“The main message – based on strong data from a well-designed study – is that patients with Sjögren’s overall do as well as the general population in terms of standard adverse pregnancy outcomes. The rate of flare of Sjögren’s disease was relatively low during the second and third trimesters, also reassuring,” Dr. Sammaritano said. She noted that the association between adverse pregnancy outcomes and aPL antibodies was not unexpected, given that they are a known risk factor.

The study authors recommend that patients with Sjögren’s syndrome be screened for aPL and anti-RNP antibodies prior to conception because of the potential increased risk for complications and that patients with positive screens be closely monitored during their pregnancy.

Dr. Sammaritano noted that there are other health problems to keep in mind. “It is important to remember that Sjögren’s patients – more than any other rheumatic disease patients – have the additional risk for neonatal lupus and complete heart block in their infant, since about two-thirds of Sjögren’s patients are positive for anti-Ro/SSA antibody,” she said. “This is a distinct issue related to the presence of this antibody alone and not specifically related to the underlying diagnosis. In clinical practice, positive anti-Ro/SSA antibody is often the main reason for counseling, monitoring, and even recommending therapy (hydroxychloroquine) in these patients.”

The study received funding from Lupus France, the France Association of Scleroderma, and the Association Gougerot Sjögren, among others. Dr. Sammaritano reports no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

Introduction: Reassurance through pregnancy loss and workups

Pregnancy loss is not an uncommon complication but it can be associated with significant stress among parents and loved ones when it occurs. Especially when recurrent, it also becomes a medical dilemma for physicians and nurses because the cause is not always obvious immediately, and even with exploration, the cause may not always be found.

First and foremost, it is important that physicians provide counseling and reassurance to families experiencing loss, and that they encourage a level of patience while the investigation for loss is done. Investigations tend not to be linear. One must look at a number of diagnostic areas including genetics, anatomy, immunology, and infections.

Even with an extensive workup, what often is found are potential associations rather than precise causes. For instance, one may find that certain antibodies or certain conditions are present, or that certain anatomic structures are abnormal. While such findings are not necessarily causative, there are therapeutic interventions that we can offer to address many of the conditions (e.g., surgical correction of the septate uterus, and low-dose aspirin and heparin for antiphospholipid syndrome).

Less than 1% of couples experience recurrent pregnancy loss (traditionally defined as three or more losses), so parents who experience one loss should be given reassurance that their loss was likely a sporadic miscarriage and that chances of recurrence will be low. Even as workups proceed, reassurance is important.

For this month’s Master Class in Obstetrics we’ve invited Wendy L. Kinzler, MD, and Anthony Vintzileos, MD, both of whom have expertise in the area of recurrent pregnancy loss, to review the potential causes and the management approach. They focus on the first trimester, when genetic causes predominate, and the early second trimester, when undetected uterine factors can be at play. They explain that the gestational age at which recurrent losses occur is an important factor in decoding etiology and management.

Dr. Kinzler is associate dean, graduate medical education, and professor of obstetrics and gynecology at NYU Long Island School of Medicine, Mineola, N.Y., and Dr. Vintzileos is chief patient safety officer for obstetrics, Northwell Health–Western Region, and professor in the department of obstetrics and gynecology in the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, N.Y. Dr. Kinzler and Dr. Vintzileos reported no relevant disclosures.
 

E. Albert Reece, MD, PhD, MBA, a maternal-fetal medicine specialist, is dean emeritus of the University of Maryland School of Medicine, former university executive vice president; currently the endowed professor and director of the Center for Advanced Research Training and Innovation (CARTI), and senior scientist in the Center for Birth Defects Research. Dr. Reece reported no relevant disclosures. He is the medical editor of this column. Contact him at [email protected].

Investigating the etiology of recurrent pregnancy loss

Pregnancy loss is defined as a loss occurring at < 20 weeks’ gestation. Any pregnancy loss is a devastating experience and couples deserve a thoughtful approach to identifying possible causes and/or predisposing factors.

Consideration of the timing of the pregnancy loss can provide a useful guide to this evaluation, as etiologies vary depending on when in gestation losses occur. In this Master Class, we will address the evaluation of pregnancy loss at < 20 weeks’ gestation, with particular attention to first trimester and early second trimester causes. Literature on the role of the cervix and intra-amniotic infection in midtrimester loss is extensive and will not be covered here.

Although early first trimester miscarriage is common, occurring in approximately 15% of clinically recognized pregnancies, only 2%-3% of couples experience two or more miscarriages and 0.5%-1% experience three or more.

When to begin a diagnostic workup should be part of a shared decision-making process, taking into consideration future family planning, parity, number of previous losses, and notably, the gestational age at which loss(es) occurred. Recurrence rates for first trimester miscarriage are similar after two versus three consecutive losses and either situation usually prompts an evaluation, whereas any second-trimester loss should be evaluated.

Increasingly, we are appreciating the value of a more targeted, gestational age–driven approach to the evaluation of pregnancy loss in an attempt to provide grieving parents with useful information without subjecting them to a wide array of expensive and unnecessary tests.
 

Genetic causes

The earlier the pregnancy loss, the more likely it is the result of abnormal fetal genetics. Genetic factors should be considered as the most likely cause for first trimester pregnancy losses (especially those occurring at < 10 weeks’ gestation), the most frequent being autosomal trisomies or monosomy X. The vast majority of trisomy conceptuses are sporadic in nature and are related to the natural aging process of the ovary (increasing the rate of meiotic nondisjunction).

NYU Long Island School of Medicine

If fetal aneuploidy is identified in a pregnancy loss, couples can be counseled about the definitive cause of the loss and can be counseled about recurrence based on age-related risks and/or tests of ovarian reserve. Recurrent pregnancy loss (RPL) is only rarely associated with a parental translocation (< 5%). Testing parental karyotypes should be reserved for cases in which the fetal karyotypes are unknown or in which an unbalanced translocation was identified in the fetus.

When a first trimester pregnancy loss is diagnosed, chorionic villus sampling (CVS) with microarray testing is the most reliable and comprehensive method for evaluating potential genetic causes. It provides valuable information even when cells are not viable and reduces the risk of maternal cell contamination – two significant limitations to standard karyotype analysis performed on tissue passed spontaneously or at the time of D&C. Studies of products of conception (POC) testing with microarray have documented the detection of abnormalities in an additional 10%-15% of cases compared with traditional karyotype analysis.

Hofstra/Northwell

When CVS is not feasible, testing maternal serum for cell-free DNA is a reasonable alternative. In a prospective cohort study of 50 maternal blood samples taken after fetal demise, 76% of samples yielded cell-free DNA results, meaning fetal fractions were within the detectable range. The higher the gestational age at the time of loss, the higher the chance of obtaining a result: Findings in the study were possible in 88% of samples when the gestational age was 8 weeks or greater, and in 53% of cases involving a lower gestational age. The time from demise to blood draw did not affect the likelihood of obtaining a result (Obstet Gynecol. 2015 Jun;125[6]:1321-29).

When neither CVS nor cell-free DNA analysis is feasible, analysis of either spontaneously passed tissue or tissue obtained at the time of a D&C may still be worthwhile. Maternal cell contamination, of course, is the main downside.

A paper published in 2020 documented the value of refocusing the initial workup. Researchers reported that 57% of 1,400 cases of recurrent pregnancy loss went unexplained using the 2012 ASRM guidelines, which included parental karyotyping but not POC cytogenetic analysis. When parental karyotypes were omitted from the initial workup and POC analysis with 24-chromosome microarray was added, at least one potential explanation for loss could be identified in 92% of cases. Only 8% were left “unexplained” (Curr Opin Obstet Gynecol. 2020 Oct;32[5]:371-9).
 

When genetics are ruled out

Issues that are top of mind when we lack genetic information or when genetic causes are ruled out include maternal metabolic disorders (uncontrolled diabetes, obesity, uncontrolled thyroid disease), environmental exposures (smoking), uterine abnormalities, and antiphospholipid syndrome.

Thorough evaluation of the uterine cavity after recurrent first trimester miscarriage – or after any second trimester loss – is too often a missing element of investigation. It is a vital component of the evaluation, and information about uterine structure is easily obtained.

A saline infusion sonogram (SIS) allows us to look at the external contour of the uterus, assess the myometrium for muscular abnormalities, visualize the uterine lining, and assess uterine orientation. Performed in the nonpregnant state, and ideally coupled with 3D technology, this relatively simple test can identify congenital uterine anomalies, intracavitary abnormalities (such as fibroids, polyps, or synechiae) which can surgically be removed prior to another pregnancy, a retroverted uterus that may be predisposed to incarceration during pregnancy, and other potentially impactful conditions, such as adenomyosis.
 

Structural anomalies

Congenital uterine anomalies are associated with first trimester miscarriage, second trimester pregnancy loss, and preterm birth. A uterine septum is of particular concern for early miscarriage, as the early embryo can implant on the relatively avascular septum.

Other congenital uterine anomalies (bicornuate, didelphys, unicornuate) can be associated with concomitant cervical structural abnormalities leading to cervical insufficiency and/or result in pathologic uterine stretch of a space-limited cavity, leading to midtrimester loss or preterm birth. The diagnosis of these anomalies is an important part of the evaluation of pregnancy loss, as it can guide monitoring in future pregnancies, or can be surgically corrected, as in the case of a uterine septum, significantly improving pregnancy outcomes.

A short cervix can result either congenitally or from injury or trauma and may also be associated with cervical insufficiency and miscarriage. It can be evaluated and monitored by ultrasound and, in some cases, treated by surgical cerclage. Pregnancy losses due to cervical insufficiency usually occur after 16 weeks of gestation and frequently are associated with intra-amniotic infections.
 

Incarcerated uterus and adenomyosis

Other uterine factors that can contribute to pregnancy loss and that are largely underdiagnosed or undiagnosed are an incarcerated retroverted uterus and adenomyosis.

Martin R. Chavez, MD. NYU Long Island School of Medicine

Most of the time, a retroverted uterus naturally assumes an anteverted position by the late first trimester or early second trimester, allowing for continued growth of the uterus and developing fetus. In approximately 10% of cases, however, the retroverted uterus becomes “stuck” or incarcerated in the posterior pelvis. This is more likely if there are large uterine fibroids or in the presence of pelvic adhesions due to endometriosis or previous pelvic surgery.

When this occurs, the fundus is wedged on the sacral promontory (may cause pelvic discomfort and constipation) and the cervix is markedly displaced anteriorly under the pubic symphysis (causing bladder outlet obstruction and urinary retention).

It is critical that ob.gyns. and emergency medicine providers are aware of this condition, which typically presents between 12 and 16 weeks’ gestation. The most frequent complaint is lower abdominal discomfort due to distended bladder and inability to void, which usually leads to bladder catheterization with drainage of large amounts of urine. An incarcerated uterus can predispose to pregnancy loss during this time (few other conditions cause loss during this time window), presumably due to impaired uterine artery blood flow.

Once the diagnosis is made, uterine incarceration may be corrected by elevating the gravid uterus out of the pelvis either manually, or by using a transvaginal ultrasound probe. (The latter minimally invasive approach was described in March at the American Institute of Ultrasound in Medicine’s annual conference by Martin Chavez, MD, and coinvestigators. More invasive approaches are rarely required but include CO₂ intraperitoneal insufflation, as used prior to laparoscopy, or laparotomy.

The later in gestation the condition is allowed to persist, the less likely correction will be possible due to the enlarging fundus. Correction between 14 and 16 weeks, or earlier if symptoms develop, is recommended.

Martin R. Chavez, MD. NYU Long Island School of Medicine

A word about antiphospholipid syndrome

Antiphospholipid syndrome can cause a variety of adverse pregnancy outcomes, including first and second trimester pregnancy loss, fetal demise, fetal growth restriction, preeclampsia, preterm birth, and maternal thromboembolism. The classical presentation of miscarriage due to untreated antiphospholipid antibody syndrome is early severe fetal growth restriction, oligohydramnios, and IUFD in the second trimester.

The diagnosis requires at least one clinical criterion and one laboratory criterion. The mere presence of low level antibodies does not make the diagnosis of antiphospholipid antibody syndrome, and care should be taken to consider both the clinical and laboratory diagnostic criteria to make an accurate diagnosis.

When present, close maternal and fetal surveillance and a combination of low-dose aspirin and heparin are mainstays of treatment. The majority of studies suggest that low-molecular weight heparin (LMWH) and unfractionated heparin have comparable clinical efficacy. However, if a recurrent loss is experienced despite treatment with LMWH, the use of unfractionated heparin in a subsequent pregnancy should be considered.

Introduction: Reassurance through pregnancy loss and workups

Pregnancy loss is not an uncommon complication but it can be associated with significant stress among parents and loved ones when it occurs. Especially when recurrent, it also becomes a medical dilemma for physicians and nurses because the cause is not always obvious immediately, and even with exploration, the cause may not always be found.

First and foremost, it is important that physicians provide counseling and reassurance to families experiencing loss, and that they encourage a level of patience while the investigation for loss is done. Investigations tend not to be linear. One must look at a number of diagnostic areas including genetics, anatomy, immunology, and infections.

Even with an extensive workup, what often is found are potential associations rather than precise causes. For instance, one may find that certain antibodies or certain conditions are present, or that certain anatomic structures are abnormal. While such findings are not necessarily causative, there are therapeutic interventions that we can offer to address many of the conditions (e.g., surgical correction of the septate uterus, and low-dose aspirin and heparin for antiphospholipid syndrome).

Less than 1% of couples experience recurrent pregnancy loss (traditionally defined as three or more losses), so parents who experience one loss should be given reassurance that their loss was likely a sporadic miscarriage and that chances of recurrence will be low. Even as workups proceed, reassurance is important.

For this month’s Master Class in Obstetrics we’ve invited Wendy L. Kinzler, MD, and Anthony Vintzileos, MD, both of whom have expertise in the area of recurrent pregnancy loss, to review the potential causes and the management approach. They focus on the first trimester, when genetic causes predominate, and the early second trimester, when undetected uterine factors can be at play. They explain that the gestational age at which recurrent losses occur is an important factor in decoding etiology and management.

Dr. Kinzler is associate dean, graduate medical education, and professor of obstetrics and gynecology at NYU Long Island School of Medicine, Mineola, N.Y., and Dr. Vintzileos is chief patient safety officer for obstetrics, Northwell Health–Western Region, and professor in the department of obstetrics and gynecology in the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, N.Y. Dr. Kinzler and Dr. Vintzileos reported no relevant disclosures.
 

E. Albert Reece, MD, PhD, MBA, a maternal-fetal medicine specialist, is dean emeritus of the University of Maryland School of Medicine, former university executive vice president; currently the endowed professor and director of the Center for Advanced Research Training and Innovation (CARTI), and senior scientist in the Center for Birth Defects Research. Dr. Reece reported no relevant disclosures. He is the medical editor of this column. Contact him at [email protected].

Investigating the etiology of recurrent pregnancy loss

Pregnancy loss is defined as a loss occurring at < 20 weeks’ gestation. Any pregnancy loss is a devastating experience and couples deserve a thoughtful approach to identifying possible causes and/or predisposing factors.

Consideration of the timing of the pregnancy loss can provide a useful guide to this evaluation, as etiologies vary depending on when in gestation losses occur. In this Master Class, we will address the evaluation of pregnancy loss at < 20 weeks’ gestation, with particular attention to first trimester and early second trimester causes. Literature on the role of the cervix and intra-amniotic infection in midtrimester loss is extensive and will not be covered here.

Although early first trimester miscarriage is common, occurring in approximately 15% of clinically recognized pregnancies, only 2%-3% of couples experience two or more miscarriages and 0.5%-1% experience three or more.

When to begin a diagnostic workup should be part of a shared decision-making process, taking into consideration future family planning, parity, number of previous losses, and notably, the gestational age at which loss(es) occurred. Recurrence rates for first trimester miscarriage are similar after two versus three consecutive losses and either situation usually prompts an evaluation, whereas any second-trimester loss should be evaluated.

Increasingly, we are appreciating the value of a more targeted, gestational age–driven approach to the evaluation of pregnancy loss in an attempt to provide grieving parents with useful information without subjecting them to a wide array of expensive and unnecessary tests.
 

Genetic causes

The earlier the pregnancy loss, the more likely it is the result of abnormal fetal genetics. Genetic factors should be considered as the most likely cause for first trimester pregnancy losses (especially those occurring at < 10 weeks’ gestation), the most frequent being autosomal trisomies or monosomy X. The vast majority of trisomy conceptuses are sporadic in nature and are related to the natural aging process of the ovary (increasing the rate of meiotic nondisjunction).

NYU Long Island School of Medicine

If fetal aneuploidy is identified in a pregnancy loss, couples can be counseled about the definitive cause of the loss and can be counseled about recurrence based on age-related risks and/or tests of ovarian reserve. Recurrent pregnancy loss (RPL) is only rarely associated with a parental translocation (< 5%). Testing parental karyotypes should be reserved for cases in which the fetal karyotypes are unknown or in which an unbalanced translocation was identified in the fetus.

When a first trimester pregnancy loss is diagnosed, chorionic villus sampling (CVS) with microarray testing is the most reliable and comprehensive method for evaluating potential genetic causes. It provides valuable information even when cells are not viable and reduces the risk of maternal cell contamination – two significant limitations to standard karyotype analysis performed on tissue passed spontaneously or at the time of D&C. Studies of products of conception (POC) testing with microarray have documented the detection of abnormalities in an additional 10%-15% of cases compared with traditional karyotype analysis.

Hofstra/Northwell

When CVS is not feasible, testing maternal serum for cell-free DNA is a reasonable alternative. In a prospective cohort study of 50 maternal blood samples taken after fetal demise, 76% of samples yielded cell-free DNA results, meaning fetal fractions were within the detectable range. The higher the gestational age at the time of loss, the higher the chance of obtaining a result: Findings in the study were possible in 88% of samples when the gestational age was 8 weeks or greater, and in 53% of cases involving a lower gestational age. The time from demise to blood draw did not affect the likelihood of obtaining a result (Obstet Gynecol. 2015 Jun;125[6]:1321-29).

When neither CVS nor cell-free DNA analysis is feasible, analysis of either spontaneously passed tissue or tissue obtained at the time of a D&C may still be worthwhile. Maternal cell contamination, of course, is the main downside.

A paper published in 2020 documented the value of refocusing the initial workup. Researchers reported that 57% of 1,400 cases of recurrent pregnancy loss went unexplained using the 2012 ASRM guidelines, which included parental karyotyping but not POC cytogenetic analysis. When parental karyotypes were omitted from the initial workup and POC analysis with 24-chromosome microarray was added, at least one potential explanation for loss could be identified in 92% of cases. Only 8% were left “unexplained” (Curr Opin Obstet Gynecol. 2020 Oct;32[5]:371-9).
 

When genetics are ruled out

Issues that are top of mind when we lack genetic information or when genetic causes are ruled out include maternal metabolic disorders (uncontrolled diabetes, obesity, uncontrolled thyroid disease), environmental exposures (smoking), uterine abnormalities, and antiphospholipid syndrome.

Thorough evaluation of the uterine cavity after recurrent first trimester miscarriage – or after any second trimester loss – is too often a missing element of investigation. It is a vital component of the evaluation, and information about uterine structure is easily obtained.

A saline infusion sonogram (SIS) allows us to look at the external contour of the uterus, assess the myometrium for muscular abnormalities, visualize the uterine lining, and assess uterine orientation. Performed in the nonpregnant state, and ideally coupled with 3D technology, this relatively simple test can identify congenital uterine anomalies, intracavitary abnormalities (such as fibroids, polyps, or synechiae) which can surgically be removed prior to another pregnancy, a retroverted uterus that may be predisposed to incarceration during pregnancy, and other potentially impactful conditions, such as adenomyosis.
 

Structural anomalies

Congenital uterine anomalies are associated with first trimester miscarriage, second trimester pregnancy loss, and preterm birth. A uterine septum is of particular concern for early miscarriage, as the early embryo can implant on the relatively avascular septum.

Other congenital uterine anomalies (bicornuate, didelphys, unicornuate) can be associated with concomitant cervical structural abnormalities leading to cervical insufficiency and/or result in pathologic uterine stretch of a space-limited cavity, leading to midtrimester loss or preterm birth. The diagnosis of these anomalies is an important part of the evaluation of pregnancy loss, as it can guide monitoring in future pregnancies, or can be surgically corrected, as in the case of a uterine septum, significantly improving pregnancy outcomes.

A short cervix can result either congenitally or from injury or trauma and may also be associated with cervical insufficiency and miscarriage. It can be evaluated and monitored by ultrasound and, in some cases, treated by surgical cerclage. Pregnancy losses due to cervical insufficiency usually occur after 16 weeks of gestation and frequently are associated with intra-amniotic infections.
 

Incarcerated uterus and adenomyosis

Other uterine factors that can contribute to pregnancy loss and that are largely underdiagnosed or undiagnosed are an incarcerated retroverted uterus and adenomyosis.

Martin R. Chavez, MD. NYU Long Island School of Medicine

Most of the time, a retroverted uterus naturally assumes an anteverted position by the late first trimester or early second trimester, allowing for continued growth of the uterus and developing fetus. In approximately 10% of cases, however, the retroverted uterus becomes “stuck” or incarcerated in the posterior pelvis. This is more likely if there are large uterine fibroids or in the presence of pelvic adhesions due to endometriosis or previous pelvic surgery.

When this occurs, the fundus is wedged on the sacral promontory (may cause pelvic discomfort and constipation) and the cervix is markedly displaced anteriorly under the pubic symphysis (causing bladder outlet obstruction and urinary retention).

It is critical that ob.gyns. and emergency medicine providers are aware of this condition, which typically presents between 12 and 16 weeks’ gestation. The most frequent complaint is lower abdominal discomfort due to distended bladder and inability to void, which usually leads to bladder catheterization with drainage of large amounts of urine. An incarcerated uterus can predispose to pregnancy loss during this time (few other conditions cause loss during this time window), presumably due to impaired uterine artery blood flow.

Once the diagnosis is made, uterine incarceration may be corrected by elevating the gravid uterus out of the pelvis either manually, or by using a transvaginal ultrasound probe. (The latter minimally invasive approach was described in March at the American Institute of Ultrasound in Medicine’s annual conference by Martin Chavez, MD, and coinvestigators. More invasive approaches are rarely required but include CO₂ intraperitoneal insufflation, as used prior to laparoscopy, or laparotomy.

The later in gestation the condition is allowed to persist, the less likely correction will be possible due to the enlarging fundus. Correction between 14 and 16 weeks, or earlier if symptoms develop, is recommended.

Martin R. Chavez, MD. NYU Long Island School of Medicine

A word about antiphospholipid syndrome

Antiphospholipid syndrome can cause a variety of adverse pregnancy outcomes, including first and second trimester pregnancy loss, fetal demise, fetal growth restriction, preeclampsia, preterm birth, and maternal thromboembolism. The classical presentation of miscarriage due to untreated antiphospholipid antibody syndrome is early severe fetal growth restriction, oligohydramnios, and IUFD in the second trimester.

The diagnosis requires at least one clinical criterion and one laboratory criterion. The mere presence of low level antibodies does not make the diagnosis of antiphospholipid antibody syndrome, and care should be taken to consider both the clinical and laboratory diagnostic criteria to make an accurate diagnosis.

When present, close maternal and fetal surveillance and a combination of low-dose aspirin and heparin are mainstays of treatment. The majority of studies suggest that low-molecular weight heparin (LMWH) and unfractionated heparin have comparable clinical efficacy. However, if a recurrent loss is experienced despite treatment with LMWH, the use of unfractionated heparin in a subsequent pregnancy should be considered.

Introduction: Reassurance through pregnancy loss and workups

Pregnancy loss is not an uncommon complication but it can be associated with significant stress among parents and loved ones when it occurs. Especially when recurrent, it also becomes a medical dilemma for physicians and nurses because the cause is not always obvious immediately, and even with exploration, the cause may not always be found.

First and foremost, it is important that physicians provide counseling and reassurance to families experiencing loss, and that they encourage a level of patience while the investigation for loss is done. Investigations tend not to be linear. One must look at a number of diagnostic areas including genetics, anatomy, immunology, and infections.

Even with an extensive workup, what often is found are potential associations rather than precise causes. For instance, one may find that certain antibodies or certain conditions are present, or that certain anatomic structures are abnormal. While such findings are not necessarily causative, there are therapeutic interventions that we can offer to address many of the conditions (e.g., surgical correction of the septate uterus, and low-dose aspirin and heparin for antiphospholipid syndrome).

Less than 1% of couples experience recurrent pregnancy loss (traditionally defined as three or more losses), so parents who experience one loss should be given reassurance that their loss was likely a sporadic miscarriage and that chances of recurrence will be low. Even as workups proceed, reassurance is important.

For this month’s Master Class in Obstetrics we’ve invited Wendy L. Kinzler, MD, and Anthony Vintzileos, MD, both of whom have expertise in the area of recurrent pregnancy loss, to review the potential causes and the management approach. They focus on the first trimester, when genetic causes predominate, and the early second trimester, when undetected uterine factors can be at play. They explain that the gestational age at which recurrent losses occur is an important factor in decoding etiology and management.

Dr. Kinzler is associate dean, graduate medical education, and professor of obstetrics and gynecology at NYU Long Island School of Medicine, Mineola, N.Y., and Dr. Vintzileos is chief patient safety officer for obstetrics, Northwell Health–Western Region, and professor in the department of obstetrics and gynecology in the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, N.Y. Dr. Kinzler and Dr. Vintzileos reported no relevant disclosures.
 

E. Albert Reece, MD, PhD, MBA, a maternal-fetal medicine specialist, is dean emeritus of the University of Maryland School of Medicine, former university executive vice president; currently the endowed professor and director of the Center for Advanced Research Training and Innovation (CARTI), and senior scientist in the Center for Birth Defects Research. Dr. Reece reported no relevant disclosures. He is the medical editor of this column. Contact him at [email protected].

Investigating the etiology of recurrent pregnancy loss

Pregnancy loss is defined as a loss occurring at < 20 weeks’ gestation. Any pregnancy loss is a devastating experience and couples deserve a thoughtful approach to identifying possible causes and/or predisposing factors.

Consideration of the timing of the pregnancy loss can provide a useful guide to this evaluation, as etiologies vary depending on when in gestation losses occur. In this Master Class, we will address the evaluation of pregnancy loss at < 20 weeks’ gestation, with particular attention to first trimester and early second trimester causes. Literature on the role of the cervix and intra-amniotic infection in midtrimester loss is extensive and will not be covered here.

Although early first trimester miscarriage is common, occurring in approximately 15% of clinically recognized pregnancies, only 2%-3% of couples experience two or more miscarriages and 0.5%-1% experience three or more.

When to begin a diagnostic workup should be part of a shared decision-making process, taking into consideration future family planning, parity, number of previous losses, and notably, the gestational age at which loss(es) occurred. Recurrence rates for first trimester miscarriage are similar after two versus three consecutive losses and either situation usually prompts an evaluation, whereas any second-trimester loss should be evaluated.

Increasingly, we are appreciating the value of a more targeted, gestational age–driven approach to the evaluation of pregnancy loss in an attempt to provide grieving parents with useful information without subjecting them to a wide array of expensive and unnecessary tests.
 

Genetic causes

The earlier the pregnancy loss, the more likely it is the result of abnormal fetal genetics. Genetic factors should be considered as the most likely cause for first trimester pregnancy losses (especially those occurring at < 10 weeks’ gestation), the most frequent being autosomal trisomies or monosomy X. The vast majority of trisomy conceptuses are sporadic in nature and are related to the natural aging process of the ovary (increasing the rate of meiotic nondisjunction).

NYU Long Island School of Medicine

If fetal aneuploidy is identified in a pregnancy loss, couples can be counseled about the definitive cause of the loss and can be counseled about recurrence based on age-related risks and/or tests of ovarian reserve. Recurrent pregnancy loss (RPL) is only rarely associated with a parental translocation (< 5%). Testing parental karyotypes should be reserved for cases in which the fetal karyotypes are unknown or in which an unbalanced translocation was identified in the fetus.

When a first trimester pregnancy loss is diagnosed, chorionic villus sampling (CVS) with microarray testing is the most reliable and comprehensive method for evaluating potential genetic causes. It provides valuable information even when cells are not viable and reduces the risk of maternal cell contamination – two significant limitations to standard karyotype analysis performed on tissue passed spontaneously or at the time of D&C. Studies of products of conception (POC) testing with microarray have documented the detection of abnormalities in an additional 10%-15% of cases compared with traditional karyotype analysis.

Hofstra/Northwell

When CVS is not feasible, testing maternal serum for cell-free DNA is a reasonable alternative. In a prospective cohort study of 50 maternal blood samples taken after fetal demise, 76% of samples yielded cell-free DNA results, meaning fetal fractions were within the detectable range. The higher the gestational age at the time of loss, the higher the chance of obtaining a result: Findings in the study were possible in 88% of samples when the gestational age was 8 weeks or greater, and in 53% of cases involving a lower gestational age. The time from demise to blood draw did not affect the likelihood of obtaining a result (Obstet Gynecol. 2015 Jun;125[6]:1321-29).

When neither CVS nor cell-free DNA analysis is feasible, analysis of either spontaneously passed tissue or tissue obtained at the time of a D&C may still be worthwhile. Maternal cell contamination, of course, is the main downside.

A paper published in 2020 documented the value of refocusing the initial workup. Researchers reported that 57% of 1,400 cases of recurrent pregnancy loss went unexplained using the 2012 ASRM guidelines, which included parental karyotyping but not POC cytogenetic analysis. When parental karyotypes were omitted from the initial workup and POC analysis with 24-chromosome microarray was added, at least one potential explanation for loss could be identified in 92% of cases. Only 8% were left “unexplained” (Curr Opin Obstet Gynecol. 2020 Oct;32[5]:371-9).
 

When genetics are ruled out

Issues that are top of mind when we lack genetic information or when genetic causes are ruled out include maternal metabolic disorders (uncontrolled diabetes, obesity, uncontrolled thyroid disease), environmental exposures (smoking), uterine abnormalities, and antiphospholipid syndrome.

Thorough evaluation of the uterine cavity after recurrent first trimester miscarriage – or after any second trimester loss – is too often a missing element of investigation. It is a vital component of the evaluation, and information about uterine structure is easily obtained.

A saline infusion sonogram (SIS) allows us to look at the external contour of the uterus, assess the myometrium for muscular abnormalities, visualize the uterine lining, and assess uterine orientation. Performed in the nonpregnant state, and ideally coupled with 3D technology, this relatively simple test can identify congenital uterine anomalies, intracavitary abnormalities (such as fibroids, polyps, or synechiae) which can surgically be removed prior to another pregnancy, a retroverted uterus that may be predisposed to incarceration during pregnancy, and other potentially impactful conditions, such as adenomyosis.
 

Structural anomalies

Congenital uterine anomalies are associated with first trimester miscarriage, second trimester pregnancy loss, and preterm birth. A uterine septum is of particular concern for early miscarriage, as the early embryo can implant on the relatively avascular septum.

Other congenital uterine anomalies (bicornuate, didelphys, unicornuate) can be associated with concomitant cervical structural abnormalities leading to cervical insufficiency and/or result in pathologic uterine stretch of a space-limited cavity, leading to midtrimester loss or preterm birth. The diagnosis of these anomalies is an important part of the evaluation of pregnancy loss, as it can guide monitoring in future pregnancies, or can be surgically corrected, as in the case of a uterine septum, significantly improving pregnancy outcomes.

A short cervix can result either congenitally or from injury or trauma and may also be associated with cervical insufficiency and miscarriage. It can be evaluated and monitored by ultrasound and, in some cases, treated by surgical cerclage. Pregnancy losses due to cervical insufficiency usually occur after 16 weeks of gestation and frequently are associated with intra-amniotic infections.
 

Incarcerated uterus and adenomyosis

Other uterine factors that can contribute to pregnancy loss and that are largely underdiagnosed or undiagnosed are an incarcerated retroverted uterus and adenomyosis.

Martin R. Chavez, MD. NYU Long Island School of Medicine

Most of the time, a retroverted uterus naturally assumes an anteverted position by the late first trimester or early second trimester, allowing for continued growth of the uterus and developing fetus. In approximately 10% of cases, however, the retroverted uterus becomes “stuck” or incarcerated in the posterior pelvis. This is more likely if there are large uterine fibroids or in the presence of pelvic adhesions due to endometriosis or previous pelvic surgery.

When this occurs, the fundus is wedged on the sacral promontory (may cause pelvic discomfort and constipation) and the cervix is markedly displaced anteriorly under the pubic symphysis (causing bladder outlet obstruction and urinary retention).

It is critical that ob.gyns. and emergency medicine providers are aware of this condition, which typically presents between 12 and 16 weeks’ gestation. The most frequent complaint is lower abdominal discomfort due to distended bladder and inability to void, which usually leads to bladder catheterization with drainage of large amounts of urine. An incarcerated uterus can predispose to pregnancy loss during this time (few other conditions cause loss during this time window), presumably due to impaired uterine artery blood flow.

Once the diagnosis is made, uterine incarceration may be corrected by elevating the gravid uterus out of the pelvis either manually, or by using a transvaginal ultrasound probe. (The latter minimally invasive approach was described in March at the American Institute of Ultrasound in Medicine’s annual conference by Martin Chavez, MD, and coinvestigators. More invasive approaches are rarely required but include CO₂ intraperitoneal insufflation, as used prior to laparoscopy, or laparotomy.

The later in gestation the condition is allowed to persist, the less likely correction will be possible due to the enlarging fundus. Correction between 14 and 16 weeks, or earlier if symptoms develop, is recommended.

Martin R. Chavez, MD. NYU Long Island School of Medicine

A word about antiphospholipid syndrome

Antiphospholipid syndrome can cause a variety of adverse pregnancy outcomes, including first and second trimester pregnancy loss, fetal demise, fetal growth restriction, preeclampsia, preterm birth, and maternal thromboembolism. The classical presentation of miscarriage due to untreated antiphospholipid antibody syndrome is early severe fetal growth restriction, oligohydramnios, and IUFD in the second trimester.

The diagnosis requires at least one clinical criterion and one laboratory criterion. The mere presence of low level antibodies does not make the diagnosis of antiphospholipid antibody syndrome, and care should be taken to consider both the clinical and laboratory diagnostic criteria to make an accurate diagnosis.

When present, close maternal and fetal surveillance and a combination of low-dose aspirin and heparin are mainstays of treatment. The majority of studies suggest that low-molecular weight heparin (LMWH) and unfractionated heparin have comparable clinical efficacy. However, if a recurrent loss is experienced despite treatment with LMWH, the use of unfractionated heparin in a subsequent pregnancy should be considered.

BALTIMORE – A novel partnership between a legal services program and a maternal health clinic is helping pregnant patients with issues such as housing or employment discrimination.

The Perinatal Legal Assistance and Well-being (P-LAW) program at Georgetown University, Washington, launched 2 years ago as a collaboration between GU’s Health Justice Alliance clinic and the Women’s and Infants Services division of nearby MedStar Washington Hospital Center, integrating attorneys into the health care team to offer no-cost legal aid for its diverse, urban population during the perinatal period. Since then, the effort has assisted more than 120 women.

“Our goal was to see how integrating a lawyer can help address some of those issues that, unfortunately, providers are not able to assist with because they go beyond the hospital or clinic walls,” said Roxana Richardson, JD, the project director and managing attorney for P-LAW, during a poster presentation at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. “Our initial findings showed that there are issues that patients were facing that needed an intervention from an attorney. We trained the providers and social workers to identify these issues so that we could intervene.”
 

Improving health by tackling legal barriers

Health-harming legal needs – social determinants of health that have a legal remedy – are drivers of poor health outcomes, particularly for Black women and children, Ms. Richardson said.

The program is one of few medical-legal partnerships specifically focused on the perinatal population. P-LAW is one component of a larger initiative at MedStar Health called DC Safe Babies Safe Moms. The initiative includes integrated mental health programming, treatment of health conditions that complicate pregnancy, assessments of social determinants of health, expanded support for lactation and nutrition, access to home visiting referrals, and extended postpartum follow-up. The work is supported through the A. James & Alice B. Clark Foundation.

Patients are evaluated for health-harming legal needs as part of a comprehensive social and behavioral health screening at their initial prenatal visit, 28-week appointment, and postpartum visit. Those who screen positive are contacted by a referral specialist on the health care team who confirms the patient has an active legal need and would like to be connected to the P-LAW team. The team then reaches out to conduct a legal intake and determine the appropriate course of action.

From March 2021 through February of this year, Ms. Richardson and others with the program have provided legal representation to 123 patients on 186 legal issues in areas such as public benefits, employment, and housing and family concerns. Services range from advising patients on steps they can take on their own (like reporting a housing condition issue to the Department of Buildings), to sending letters on patients’ behalf, to appearing in court. Most patients served were in their second and third trimesters of pregnancy. The majority were Black or African American, aged 20-34 years, and had incomes below 100% of the federal poverty level.

The most common legal issues were in the areas of public benefits (SNAP/food stamps, cash assistance), employment (parental leave, discrimination), housing (conditions, eviction), and family law (child support, domestic violence). Among the 186 issues, work has been completed on 106 concerns and 33 still have a case open; for 47, the client withdrew or ceased contact, Ms. Richardson reported.

Most times when obstetricians hear concerns like these, they wonder what to do, said Tamika Auguste, MD, chair of obstetrics and gynecology at MedStar Health. Having the P-LAW program as a resource is a huge help, she said. If patients express concerns, or if obstetricians uncover concerns during office visits, doctors can enter a referral directly in the electronic medical record.

Patients are “so relieved,” Dr. Auguste said in an interview, because they often wonder if their doctor can help. “Your doctor is only going to be able to help to a certain point. But to know they’re pregnant and they have this resource, and they’re going to get legal help, has been game-changing for so many patients.”
 

COVID ... or morning sickness?

In one rewarding case, Ms. Richardson said, a single mother of one child who was pregnant and experiencing hyperemesis explained that her employer would forbid her from working if she had any symptoms similar to COVID-19. The employer mistook her vomiting, nausea, and exhaustion as COVID symptoms and docked her pay. That started a cascade in which earning less meant she was facing eviction and car repossession – and, eventually, overdraft fees and withdrawals from her bank. She was so despondent she was thinking about self-harm, Ms. Richardson said.

With the aid of the P-LAW program, the woman had short-term disability approved within 72 hours, was referred to the hospital for inpatient mental health treatment, and received the care she needed. She ultimately delivered a healthy baby girl and found a new job.

Tiffany Moore Simas, MD, MPH, MEd, chair of the department of obstetrics and gynecology at the University of Massachusetts and UMass Memorial Health in Worcester, said she encounters similar concerns among her patients, with the vast majority having one or more issues with social determinants of health.

“I think it’s incredible, as we’re trying to address equity in perinatal health and maternal mortality and morbidity, to have a more holistic view of what health means, and all of the social determinants of health, and actually helping our patients address that in real time at their visits and connecting them,” said Dr. Simas, who also is professor of ob/gyn, pediatrics, psychiatry, and population and quantitative health sciences at UMass. “It has really opened my mind to the possibilities of things we need to explore and do differently.”

Ms. Richardson, Dr. Auguste, and Dr. Simas reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

BALTIMORE – A novel partnership between a legal services program and a maternal health clinic is helping pregnant patients with issues such as housing or employment discrimination.

The Perinatal Legal Assistance and Well-being (P-LAW) program at Georgetown University, Washington, launched 2 years ago as a collaboration between GU’s Health Justice Alliance clinic and the Women’s and Infants Services division of nearby MedStar Washington Hospital Center, integrating attorneys into the health care team to offer no-cost legal aid for its diverse, urban population during the perinatal period. Since then, the effort has assisted more than 120 women.

“Our goal was to see how integrating a lawyer can help address some of those issues that, unfortunately, providers are not able to assist with because they go beyond the hospital or clinic walls,” said Roxana Richardson, JD, the project director and managing attorney for P-LAW, during a poster presentation at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. “Our initial findings showed that there are issues that patients were facing that needed an intervention from an attorney. We trained the providers and social workers to identify these issues so that we could intervene.”
 

Improving health by tackling legal barriers

Health-harming legal needs – social determinants of health that have a legal remedy – are drivers of poor health outcomes, particularly for Black women and children, Ms. Richardson said.

The program is one of few medical-legal partnerships specifically focused on the perinatal population. P-LAW is one component of a larger initiative at MedStar Health called DC Safe Babies Safe Moms. The initiative includes integrated mental health programming, treatment of health conditions that complicate pregnancy, assessments of social determinants of health, expanded support for lactation and nutrition, access to home visiting referrals, and extended postpartum follow-up. The work is supported through the A. James & Alice B. Clark Foundation.

Patients are evaluated for health-harming legal needs as part of a comprehensive social and behavioral health screening at their initial prenatal visit, 28-week appointment, and postpartum visit. Those who screen positive are contacted by a referral specialist on the health care team who confirms the patient has an active legal need and would like to be connected to the P-LAW team. The team then reaches out to conduct a legal intake and determine the appropriate course of action.

From March 2021 through February of this year, Ms. Richardson and others with the program have provided legal representation to 123 patients on 186 legal issues in areas such as public benefits, employment, and housing and family concerns. Services range from advising patients on steps they can take on their own (like reporting a housing condition issue to the Department of Buildings), to sending letters on patients’ behalf, to appearing in court. Most patients served were in their second and third trimesters of pregnancy. The majority were Black or African American, aged 20-34 years, and had incomes below 100% of the federal poverty level.

The most common legal issues were in the areas of public benefits (SNAP/food stamps, cash assistance), employment (parental leave, discrimination), housing (conditions, eviction), and family law (child support, domestic violence). Among the 186 issues, work has been completed on 106 concerns and 33 still have a case open; for 47, the client withdrew or ceased contact, Ms. Richardson reported.

Most times when obstetricians hear concerns like these, they wonder what to do, said Tamika Auguste, MD, chair of obstetrics and gynecology at MedStar Health. Having the P-LAW program as a resource is a huge help, she said. If patients express concerns, or if obstetricians uncover concerns during office visits, doctors can enter a referral directly in the electronic medical record.

Patients are “so relieved,” Dr. Auguste said in an interview, because they often wonder if their doctor can help. “Your doctor is only going to be able to help to a certain point. But to know they’re pregnant and they have this resource, and they’re going to get legal help, has been game-changing for so many patients.”
 

COVID ... or morning sickness?

In one rewarding case, Ms. Richardson said, a single mother of one child who was pregnant and experiencing hyperemesis explained that her employer would forbid her from working if she had any symptoms similar to COVID-19. The employer mistook her vomiting, nausea, and exhaustion as COVID symptoms and docked her pay. That started a cascade in which earning less meant she was facing eviction and car repossession – and, eventually, overdraft fees and withdrawals from her bank. She was so despondent she was thinking about self-harm, Ms. Richardson said.

With the aid of the P-LAW program, the woman had short-term disability approved within 72 hours, was referred to the hospital for inpatient mental health treatment, and received the care she needed. She ultimately delivered a healthy baby girl and found a new job.

Tiffany Moore Simas, MD, MPH, MEd, chair of the department of obstetrics and gynecology at the University of Massachusetts and UMass Memorial Health in Worcester, said she encounters similar concerns among her patients, with the vast majority having one or more issues with social determinants of health.

“I think it’s incredible, as we’re trying to address equity in perinatal health and maternal mortality and morbidity, to have a more holistic view of what health means, and all of the social determinants of health, and actually helping our patients address that in real time at their visits and connecting them,” said Dr. Simas, who also is professor of ob/gyn, pediatrics, psychiatry, and population and quantitative health sciences at UMass. “It has really opened my mind to the possibilities of things we need to explore and do differently.”

Ms. Richardson, Dr. Auguste, and Dr. Simas reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

BALTIMORE – A novel partnership between a legal services program and a maternal health clinic is helping pregnant patients with issues such as housing or employment discrimination.

The Perinatal Legal Assistance and Well-being (P-LAW) program at Georgetown University, Washington, launched 2 years ago as a collaboration between GU’s Health Justice Alliance clinic and the Women’s and Infants Services division of nearby MedStar Washington Hospital Center, integrating attorneys into the health care team to offer no-cost legal aid for its diverse, urban population during the perinatal period. Since then, the effort has assisted more than 120 women.

“Our goal was to see how integrating a lawyer can help address some of those issues that, unfortunately, providers are not able to assist with because they go beyond the hospital or clinic walls,” said Roxana Richardson, JD, the project director and managing attorney for P-LAW, during a poster presentation at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists. “Our initial findings showed that there are issues that patients were facing that needed an intervention from an attorney. We trained the providers and social workers to identify these issues so that we could intervene.”
 

Improving health by tackling legal barriers

Health-harming legal needs – social determinants of health that have a legal remedy – are drivers of poor health outcomes, particularly for Black women and children, Ms. Richardson said.

The program is one of few medical-legal partnerships specifically focused on the perinatal population. P-LAW is one component of a larger initiative at MedStar Health called DC Safe Babies Safe Moms. The initiative includes integrated mental health programming, treatment of health conditions that complicate pregnancy, assessments of social determinants of health, expanded support for lactation and nutrition, access to home visiting referrals, and extended postpartum follow-up. The work is supported through the A. James & Alice B. Clark Foundation.

Patients are evaluated for health-harming legal needs as part of a comprehensive social and behavioral health screening at their initial prenatal visit, 28-week appointment, and postpartum visit. Those who screen positive are contacted by a referral specialist on the health care team who confirms the patient has an active legal need and would like to be connected to the P-LAW team. The team then reaches out to conduct a legal intake and determine the appropriate course of action.

From March 2021 through February of this year, Ms. Richardson and others with the program have provided legal representation to 123 patients on 186 legal issues in areas such as public benefits, employment, and housing and family concerns. Services range from advising patients on steps they can take on their own (like reporting a housing condition issue to the Department of Buildings), to sending letters on patients’ behalf, to appearing in court. Most patients served were in their second and third trimesters of pregnancy. The majority were Black or African American, aged 20-34 years, and had incomes below 100% of the federal poverty level.

The most common legal issues were in the areas of public benefits (SNAP/food stamps, cash assistance), employment (parental leave, discrimination), housing (conditions, eviction), and family law (child support, domestic violence). Among the 186 issues, work has been completed on 106 concerns and 33 still have a case open; for 47, the client withdrew or ceased contact, Ms. Richardson reported.

Most times when obstetricians hear concerns like these, they wonder what to do, said Tamika Auguste, MD, chair of obstetrics and gynecology at MedStar Health. Having the P-LAW program as a resource is a huge help, she said. If patients express concerns, or if obstetricians uncover concerns during office visits, doctors can enter a referral directly in the electronic medical record.

Patients are “so relieved,” Dr. Auguste said in an interview, because they often wonder if their doctor can help. “Your doctor is only going to be able to help to a certain point. But to know they’re pregnant and they have this resource, and they’re going to get legal help, has been game-changing for so many patients.”
 

COVID ... or morning sickness?

In one rewarding case, Ms. Richardson said, a single mother of one child who was pregnant and experiencing hyperemesis explained that her employer would forbid her from working if she had any symptoms similar to COVID-19. The employer mistook her vomiting, nausea, and exhaustion as COVID symptoms and docked her pay. That started a cascade in which earning less meant she was facing eviction and car repossession – and, eventually, overdraft fees and withdrawals from her bank. She was so despondent she was thinking about self-harm, Ms. Richardson said.

With the aid of the P-LAW program, the woman had short-term disability approved within 72 hours, was referred to the hospital for inpatient mental health treatment, and received the care she needed. She ultimately delivered a healthy baby girl and found a new job.

Tiffany Moore Simas, MD, MPH, MEd, chair of the department of obstetrics and gynecology at the University of Massachusetts and UMass Memorial Health in Worcester, said she encounters similar concerns among her patients, with the vast majority having one or more issues with social determinants of health.

“I think it’s incredible, as we’re trying to address equity in perinatal health and maternal mortality and morbidity, to have a more holistic view of what health means, and all of the social determinants of health, and actually helping our patients address that in real time at their visits and connecting them,” said Dr. Simas, who also is professor of ob/gyn, pediatrics, psychiatry, and population and quantitative health sciences at UMass. “It has really opened my mind to the possibilities of things we need to explore and do differently.”

Ms. Richardson, Dr. Auguste, and Dr. Simas reported no relevant financial relationships.

A version of this article originally appeared on Medscape.com.

In a first-of-its-kind in utero surgery, researchers have successfully repaired a cerebrovascular malformation, which often leads to heart failure, severe brain injury, or possibly death soon after birth.
 

The team from Boston Children’s Hospital and Brigham and Women’s Hospital used ultrasound guidance to repair the vein of Galen malformation, which causes excessively high blood flow, resulting in both neurologic and cardiac complications. 

The surgery was performed in a fetus at 34 weeks’ gestational age, with remarkable results. Since birth, the baby girl, who was identified in utero as being at high risk of suffering serious complications of the malformation, has required no medication to treat heart failure and no postnatal surgery.

Repeated echocardiograms after birth displayed marked improvement in cardiac output, and brain MRI showed no brain injury and a normal neurologic exam.

“This is incredibly exciting. The hope is that this baby, and others with this condition who receive this in utero surgery in future, will go on to have a normal life,” lead researcher Darren B. Orbach, MD, PhD, said in an interview.

“We were thrilled to see that the aggressive decline usually seen after birth simply did not appear. We are pleased to report that at 6 weeks, the infant is progressing remarkably well, on no medications, eating normally, gaining weight and is back home. There are no signs of any negative effects on the brain,” he added.

Dr. Orbach, codirector of the Cerebrovascular Surgery & Interventions Center at Boston Children’s Hospital, and colleagues described this first case report of the in utero vein of Galen malformation repair in a research letter, published online in the journal Stroke.
 

Vein of Galen malformation

Dr. Orbach explained that vein of Galen malformation, which occurs in around 1 in every 60,000 births, is a cerebrovascular anomaly in which the arterial system is directly connected to the venous system rather than to capillaries that are necessary to slow blood flow and deliver oxygen to surrounding brain tissue.

“The arterial and venous systems are fundamentally very different. The arterial system is high pressure, high flow; while the venous system is low pressure, low flow. They shouldn’t be directly connected,” he noted.

The vein of Galen malformation is the most extreme version of such an anomaly. Developing in early gestation, it is associated with a large increase in blood flow through the brain which grows over time and can sometimes result in twice the total cardiac output of the body or even more, Dr. Orbach said.

The placenta is believed to be protective as most babies don’t have overt physiologic problems in utero, but they can run into crisis after birth, with the abnormally high blood flow causing an immense stress to the heart.

Babies typically present with heart failure as their first major symptom soon after birth, Dr. Orbach said. “Although the anatomical problem is in the brain, the clinical manifestation is high-output heart failure. The heart is trying to do double its normal work, pumping the blood to the malformation and immediately back to the heart and that blood is not performing any useful function.

“These newborns can get very sick. They need multiple medications to support their cardiovascular system and we need to do procedures to try and reduce the blood flow,” he explained. 

Brain injury is also a common problem. “The brain circulation is very abnormal. The blood is being shunted through the malformation rather than circulating through the brain tissue which can become ischemic,” Dr. Orbach commented.

“The babies who get sick would have a very high mortality (up to 90%) without expert care. Even those who do receive expert care at a specialty center have a mortality rate of 30% to 40% and those who survive have a high risk of neurologic and cognitive impairment,” he added.

The current treatment for babies born with the condition involves transarterial embolization, by which a catheter is inserted into the arterial system to enable the malformation to be occluded by various techniques. 

But Dr. Orbach pointed out that some babies are born too sick to have the postnatal intervention. “The heart failure and brain injury is so overwhelming that no matter what we do, we cannot reverse it, and these babies normally do not survive. What we are doing with the fetal surgery is trying to help those babies who cannot be treated with the current postnatal approach,” he said.

The first stage of this research involved trying to identify these very-high-risk babies in utero, and the researchers found that on fetal MRI a particular measurement of one of the venous sinuses that drains the main malformation was a good predictor of how the baby would fare after birth. The babies predicted to do poorly from this test are the targets for the fetal surgery.

The technique used for the postnatal intervention is too technically challenging to perform in utero. “So we have developed a different approach for the in utero surgery that involves navigating into the accepting vein in the malformation with a needle under ultrasound guidance, and then packing the vein with metal coils to dramatically reduce the blood flow,” Dr. Orbach explained.

This procedure was performed in this first patient on March 15. The surgery was part of a clinical trial that is planned to include 20 cases in total.

“The immediate goal is to see whether we can transform those fetuses who are at very high risk of getting sick after birth into babies who do well in the [neonatal] ICU and are able to be sent home for elective treatment at a few months of age,” Dr. Orbach noted. “The study is continuing as it is vital that we continue and show efficacy and safety in other patients as well,” he added.

Dr. Orbach said the results of this first case were extremely encouraging. “Each stage was exciting – the technical success of the procedure, and then seeing the [blood] flow diminish on the ultrasound right there during the procedure; then the next day we did a fetal echocardiogram, and we could see that the abnormal cardiac output was dramatically reduced, and a fetal MRI scan also showed the malformation was already coming down in size.”

The baby was born prematurely 2 days after the procedure because of ruptured membranes with a birth weight of 1.9 kg (4.2 lb). She has not required any cardiovascular support or postnatal embolization.

“We were waiting with bated breath until the baby was born to see how she did clinically. I was trying to be conservative in my expectations, but it was quickly apparent that she was going to do great,” he said. Now at home, she has some oxygen treatment for the first few weeks, “but right now her neurological status is completely intact and essentially she looks like any other baby,” Dr. Orbach commented.

It is not yet known whether the infant will need any additional procedures. “We will follow her closely and make a decision on whether further treatment is needed based on whether the malformation is growing or not,” Dr. Orbach said. Longer term follow-up will also assess secondary problems sometimes seen, such as learning problems and seizures.

Although other fetal surgeries are now routinely performed, this is believed to be the first in utero surgery aimed at the cerebrovascular system.

“There were a lot of uncertainties,” Dr. Orbach said. “We didn’t even know if we would be able to see our instruments on ultrasound.” To model the procedure, the researchers had a phantom fetal skull and brain constructed with a vein of Galen malformation, which was key to obtaining Food and Drug Administration approval for the study.

If the study shows success in the other patients too, the technique could be rolled out to other centers. “There definitely needs to be fetal surgery and neurointerventional teams familiar with vein of Galen malformation in place, and ready to manage complications after delivery regardless of outcome. But we are not the only center with those capabilities, so if our trial pans out, yes, the hope is that other teams in specialist children’s hospitals around the world could do this too,” he added.
 

Pioneering work

Commenting on the case report in an American Heart Association press release, Colin Derdeyn, MD, a neurointerventional radiologist at University of Iowa Health Care, Iowa City, who performs vein of Galen malformation embolizations on neonates, said: “The key advance here is to intervene before the physiologic events of birth can cause life-threatening heart failure.”

Dr. Derdeyn, who is a past chair of the American Heart Association’s Stroke Council, cautioned that one successful case is not enough experience to conclude that the risks of this procedure are worth the benefits.

But, he added: “The positive hemodynamic changes that they observed in utero and after birth – reduction in flow, reduction in size of the draining vein, reversal of the abnormal reversed flow in the aorta – are really encouraging. These are some of the most exciting and surprising aspects of this case report. This is pioneering work being done in a very careful and responsible way.”

The study was funded by a grant from the Sage Schermerhorn Chair for Image-Guided Therapy.

A version of this article first appeared on Medscape.com.

In a first-of-its-kind in utero surgery, researchers have successfully repaired a cerebrovascular malformation, which often leads to heart failure, severe brain injury, or possibly death soon after birth.
 

The team from Boston Children’s Hospital and Brigham and Women’s Hospital used ultrasound guidance to repair the vein of Galen malformation, which causes excessively high blood flow, resulting in both neurologic and cardiac complications. 

The surgery was performed in a fetus at 34 weeks’ gestational age, with remarkable results. Since birth, the baby girl, who was identified in utero as being at high risk of suffering serious complications of the malformation, has required no medication to treat heart failure and no postnatal surgery.

Repeated echocardiograms after birth displayed marked improvement in cardiac output, and brain MRI showed no brain injury and a normal neurologic exam.

“This is incredibly exciting. The hope is that this baby, and others with this condition who receive this in utero surgery in future, will go on to have a normal life,” lead researcher Darren B. Orbach, MD, PhD, said in an interview.

“We were thrilled to see that the aggressive decline usually seen after birth simply did not appear. We are pleased to report that at 6 weeks, the infant is progressing remarkably well, on no medications, eating normally, gaining weight and is back home. There are no signs of any negative effects on the brain,” he added.

Dr. Orbach, codirector of the Cerebrovascular Surgery & Interventions Center at Boston Children’s Hospital, and colleagues described this first case report of the in utero vein of Galen malformation repair in a research letter, published online in the journal Stroke.
 

Vein of Galen malformation

Dr. Orbach explained that vein of Galen malformation, which occurs in around 1 in every 60,000 births, is a cerebrovascular anomaly in which the arterial system is directly connected to the venous system rather than to capillaries that are necessary to slow blood flow and deliver oxygen to surrounding brain tissue.

“The arterial and venous systems are fundamentally very different. The arterial system is high pressure, high flow; while the venous system is low pressure, low flow. They shouldn’t be directly connected,” he noted.

The vein of Galen malformation is the most extreme version of such an anomaly. Developing in early gestation, it is associated with a large increase in blood flow through the brain which grows over time and can sometimes result in twice the total cardiac output of the body or even more, Dr. Orbach said.

The placenta is believed to be protective as most babies don’t have overt physiologic problems in utero, but they can run into crisis after birth, with the abnormally high blood flow causing an immense stress to the heart.

Babies typically present with heart failure as their first major symptom soon after birth, Dr. Orbach said. “Although the anatomical problem is in the brain, the clinical manifestation is high-output heart failure. The heart is trying to do double its normal work, pumping the blood to the malformation and immediately back to the heart and that blood is not performing any useful function.

“These newborns can get very sick. They need multiple medications to support their cardiovascular system and we need to do procedures to try and reduce the blood flow,” he explained. 

Brain injury is also a common problem. “The brain circulation is very abnormal. The blood is being shunted through the malformation rather than circulating through the brain tissue which can become ischemic,” Dr. Orbach commented.

“The babies who get sick would have a very high mortality (up to 90%) without expert care. Even those who do receive expert care at a specialty center have a mortality rate of 30% to 40% and those who survive have a high risk of neurologic and cognitive impairment,” he added.

The current treatment for babies born with the condition involves transarterial embolization, by which a catheter is inserted into the arterial system to enable the malformation to be occluded by various techniques. 

But Dr. Orbach pointed out that some babies are born too sick to have the postnatal intervention. “The heart failure and brain injury is so overwhelming that no matter what we do, we cannot reverse it, and these babies normally do not survive. What we are doing with the fetal surgery is trying to help those babies who cannot be treated with the current postnatal approach,” he said.

The first stage of this research involved trying to identify these very-high-risk babies in utero, and the researchers found that on fetal MRI a particular measurement of one of the venous sinuses that drains the main malformation was a good predictor of how the baby would fare after birth. The babies predicted to do poorly from this test are the targets for the fetal surgery.

The technique used for the postnatal intervention is too technically challenging to perform in utero. “So we have developed a different approach for the in utero surgery that involves navigating into the accepting vein in the malformation with a needle under ultrasound guidance, and then packing the vein with metal coils to dramatically reduce the blood flow,” Dr. Orbach explained.

This procedure was performed in this first patient on March 15. The surgery was part of a clinical trial that is planned to include 20 cases in total.

“The immediate goal is to see whether we can transform those fetuses who are at very high risk of getting sick after birth into babies who do well in the [neonatal] ICU and are able to be sent home for elective treatment at a few months of age,” Dr. Orbach noted. “The study is continuing as it is vital that we continue and show efficacy and safety in other patients as well,” he added.

Dr. Orbach said the results of this first case were extremely encouraging. “Each stage was exciting – the technical success of the procedure, and then seeing the [blood] flow diminish on the ultrasound right there during the procedure; then the next day we did a fetal echocardiogram, and we could see that the abnormal cardiac output was dramatically reduced, and a fetal MRI scan also showed the malformation was already coming down in size.”

The baby was born prematurely 2 days after the procedure because of ruptured membranes with a birth weight of 1.9 kg (4.2 lb). She has not required any cardiovascular support or postnatal embolization.

“We were waiting with bated breath until the baby was born to see how she did clinically. I was trying to be conservative in my expectations, but it was quickly apparent that she was going to do great,” he said. Now at home, she has some oxygen treatment for the first few weeks, “but right now her neurological status is completely intact and essentially she looks like any other baby,” Dr. Orbach commented.

It is not yet known whether the infant will need any additional procedures. “We will follow her closely and make a decision on whether further treatment is needed based on whether the malformation is growing or not,” Dr. Orbach said. Longer term follow-up will also assess secondary problems sometimes seen, such as learning problems and seizures.

Although other fetal surgeries are now routinely performed, this is believed to be the first in utero surgery aimed at the cerebrovascular system.

“There were a lot of uncertainties,” Dr. Orbach said. “We didn’t even know if we would be able to see our instruments on ultrasound.” To model the procedure, the researchers had a phantom fetal skull and brain constructed with a vein of Galen malformation, which was key to obtaining Food and Drug Administration approval for the study.

If the study shows success in the other patients too, the technique could be rolled out to other centers. “There definitely needs to be fetal surgery and neurointerventional teams familiar with vein of Galen malformation in place, and ready to manage complications after delivery regardless of outcome. But we are not the only center with those capabilities, so if our trial pans out, yes, the hope is that other teams in specialist children’s hospitals around the world could do this too,” he added.
 

Pioneering work

Commenting on the case report in an American Heart Association press release, Colin Derdeyn, MD, a neurointerventional radiologist at University of Iowa Health Care, Iowa City, who performs vein of Galen malformation embolizations on neonates, said: “The key advance here is to intervene before the physiologic events of birth can cause life-threatening heart failure.”

Dr. Derdeyn, who is a past chair of the American Heart Association’s Stroke Council, cautioned that one successful case is not enough experience to conclude that the risks of this procedure are worth the benefits.

But, he added: “The positive hemodynamic changes that they observed in utero and after birth – reduction in flow, reduction in size of the draining vein, reversal of the abnormal reversed flow in the aorta – are really encouraging. These are some of the most exciting and surprising aspects of this case report. This is pioneering work being done in a very careful and responsible way.”

The study was funded by a grant from the Sage Schermerhorn Chair for Image-Guided Therapy.

A version of this article first appeared on Medscape.com.

In a first-of-its-kind in utero surgery, researchers have successfully repaired a cerebrovascular malformation, which often leads to heart failure, severe brain injury, or possibly death soon after birth.
 

The team from Boston Children’s Hospital and Brigham and Women’s Hospital used ultrasound guidance to repair the vein of Galen malformation, which causes excessively high blood flow, resulting in both neurologic and cardiac complications. 

The surgery was performed in a fetus at 34 weeks’ gestational age, with remarkable results. Since birth, the baby girl, who was identified in utero as being at high risk of suffering serious complications of the malformation, has required no medication to treat heart failure and no postnatal surgery.

Repeated echocardiograms after birth displayed marked improvement in cardiac output, and brain MRI showed no brain injury and a normal neurologic exam.

“This is incredibly exciting. The hope is that this baby, and others with this condition who receive this in utero surgery in future, will go on to have a normal life,” lead researcher Darren B. Orbach, MD, PhD, said in an interview.

“We were thrilled to see that the aggressive decline usually seen after birth simply did not appear. We are pleased to report that at 6 weeks, the infant is progressing remarkably well, on no medications, eating normally, gaining weight and is back home. There are no signs of any negative effects on the brain,” he added.

Dr. Orbach, codirector of the Cerebrovascular Surgery & Interventions Center at Boston Children’s Hospital, and colleagues described this first case report of the in utero vein of Galen malformation repair in a research letter, published online in the journal Stroke.
 

Vein of Galen malformation

Dr. Orbach explained that vein of Galen malformation, which occurs in around 1 in every 60,000 births, is a cerebrovascular anomaly in which the arterial system is directly connected to the venous system rather than to capillaries that are necessary to slow blood flow and deliver oxygen to surrounding brain tissue.

“The arterial and venous systems are fundamentally very different. The arterial system is high pressure, high flow; while the venous system is low pressure, low flow. They shouldn’t be directly connected,” he noted.

The vein of Galen malformation is the most extreme version of such an anomaly. Developing in early gestation, it is associated with a large increase in blood flow through the brain which grows over time and can sometimes result in twice the total cardiac output of the body or even more, Dr. Orbach said.

The placenta is believed to be protective as most babies don’t have overt physiologic problems in utero, but they can run into crisis after birth, with the abnormally high blood flow causing an immense stress to the heart.

Babies typically present with heart failure as their first major symptom soon after birth, Dr. Orbach said. “Although the anatomical problem is in the brain, the clinical manifestation is high-output heart failure. The heart is trying to do double its normal work, pumping the blood to the malformation and immediately back to the heart and that blood is not performing any useful function.

“These newborns can get very sick. They need multiple medications to support their cardiovascular system and we need to do procedures to try and reduce the blood flow,” he explained. 

Brain injury is also a common problem. “The brain circulation is very abnormal. The blood is being shunted through the malformation rather than circulating through the brain tissue which can become ischemic,” Dr. Orbach commented.

“The babies who get sick would have a very high mortality (up to 90%) without expert care. Even those who do receive expert care at a specialty center have a mortality rate of 30% to 40% and those who survive have a high risk of neurologic and cognitive impairment,” he added.

The current treatment for babies born with the condition involves transarterial embolization, by which a catheter is inserted into the arterial system to enable the malformation to be occluded by various techniques. 

But Dr. Orbach pointed out that some babies are born too sick to have the postnatal intervention. “The heart failure and brain injury is so overwhelming that no matter what we do, we cannot reverse it, and these babies normally do not survive. What we are doing with the fetal surgery is trying to help those babies who cannot be treated with the current postnatal approach,” he said.

The first stage of this research involved trying to identify these very-high-risk babies in utero, and the researchers found that on fetal MRI a particular measurement of one of the venous sinuses that drains the main malformation was a good predictor of how the baby would fare after birth. The babies predicted to do poorly from this test are the targets for the fetal surgery.

The technique used for the postnatal intervention is too technically challenging to perform in utero. “So we have developed a different approach for the in utero surgery that involves navigating into the accepting vein in the malformation with a needle under ultrasound guidance, and then packing the vein with metal coils to dramatically reduce the blood flow,” Dr. Orbach explained.

This procedure was performed in this first patient on March 15. The surgery was part of a clinical trial that is planned to include 20 cases in total.

“The immediate goal is to see whether we can transform those fetuses who are at very high risk of getting sick after birth into babies who do well in the [neonatal] ICU and are able to be sent home for elective treatment at a few months of age,” Dr. Orbach noted. “The study is continuing as it is vital that we continue and show efficacy and safety in other patients as well,” he added.

Dr. Orbach said the results of this first case were extremely encouraging. “Each stage was exciting – the technical success of the procedure, and then seeing the [blood] flow diminish on the ultrasound right there during the procedure; then the next day we did a fetal echocardiogram, and we could see that the abnormal cardiac output was dramatically reduced, and a fetal MRI scan also showed the malformation was already coming down in size.”

The baby was born prematurely 2 days after the procedure because of ruptured membranes with a birth weight of 1.9 kg (4.2 lb). She has not required any cardiovascular support or postnatal embolization.

“We were waiting with bated breath until the baby was born to see how she did clinically. I was trying to be conservative in my expectations, but it was quickly apparent that she was going to do great,” he said. Now at home, she has some oxygen treatment for the first few weeks, “but right now her neurological status is completely intact and essentially she looks like any other baby,” Dr. Orbach commented.

It is not yet known whether the infant will need any additional procedures. “We will follow her closely and make a decision on whether further treatment is needed based on whether the malformation is growing or not,” Dr. Orbach said. Longer term follow-up will also assess secondary problems sometimes seen, such as learning problems and seizures.

Although other fetal surgeries are now routinely performed, this is believed to be the first in utero surgery aimed at the cerebrovascular system.

“There were a lot of uncertainties,” Dr. Orbach said. “We didn’t even know if we would be able to see our instruments on ultrasound.” To model the procedure, the researchers had a phantom fetal skull and brain constructed with a vein of Galen malformation, which was key to obtaining Food and Drug Administration approval for the study.

If the study shows success in the other patients too, the technique could be rolled out to other centers. “There definitely needs to be fetal surgery and neurointerventional teams familiar with vein of Galen malformation in place, and ready to manage complications after delivery regardless of outcome. But we are not the only center with those capabilities, so if our trial pans out, yes, the hope is that other teams in specialist children’s hospitals around the world could do this too,” he added.
 

Pioneering work

Commenting on the case report in an American Heart Association press release, Colin Derdeyn, MD, a neurointerventional radiologist at University of Iowa Health Care, Iowa City, who performs vein of Galen malformation embolizations on neonates, said: “The key advance here is to intervene before the physiologic events of birth can cause life-threatening heart failure.”

Dr. Derdeyn, who is a past chair of the American Heart Association’s Stroke Council, cautioned that one successful case is not enough experience to conclude that the risks of this procedure are worth the benefits.

But, he added: “The positive hemodynamic changes that they observed in utero and after birth – reduction in flow, reduction in size of the draining vein, reversal of the abnormal reversed flow in the aorta – are really encouraging. These are some of the most exciting and surprising aspects of this case report. This is pioneering work being done in a very careful and responsible way.”

The study was funded by a grant from the Sage Schermerhorn Chair for Image-Guided Therapy.

A version of this article first appeared on Medscape.com.

BALTIMORE – Using norethindrone acetate to induce scheduled bleeds in women of reproductive age using etonogestrel implants for contraception may reduce the amount of bothersome bleeding associated with the devices. The bleeding causes some women to have the device removed, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

In a randomized, double-blinded, placebo-controlled trial of 51 patients desiring the implants – which suppress ovulation by releasing progestin over a 3-year period – taking norethindrone acetate for 1 week every 4 weeks led to 80% of participants in the treatment group reporting satisfactory bleeding patterns with the etonogestrel implants in place.

Jordan Gray

Rates of early discontinuation have been variable, according to published literature, ranging from 13% to 21.1%, said Jordan Gray, MD, a fourth-year resident in ob.gyn. at Baylor Scott and White Medical Center, Temple, Tex., who helped conduct the new study. Reasons included bothersome bleeding. Dr. Gray and colleagues found that 24% of women in the placebo group requested removal of the implant, compared with 9% of those in the treatment group. Among these women, none requested removal for bothersome bleeding but rather for reasons such as wanting to get pregnant. One person requested removal because she did not like amenorrhea.

While the results of the study did not achieve statistical significance, owing to its size and noncompliance among some participants, it does indicate that norethindrone acetate may be helpful, Dr. Gray said.

During the study, participants in the treatment group (n = 22) received a monthly treatment regimen of 5 mg of oral norethindrone acetate daily for 7 days each month for the first 6 months after placement of an etonogestrel implant. The placebo group (n = 29) was given inert tablets prescribed in the same regimen. Both groups received products from a mail-order pharmacy.

Participants were women aged 18-48 years who desired an implant or those aged 14 years who had permission from a parent or guardian to receive the contraceptive. The study excluded people with known or suspected pregnancy, those less than 8 weeks’ post partum, those who experienced menarche less than 2 years ago, those with body mass index greater than 40, and those who received depot medroxyprogesterone acetate within the previous 12 weeks. Excessive bleeding was defined as bleeding or spotting on more than 7 consecutive days or a fifth episode of bleeding in 90 days.

Overall, 11 patients (38%) in the placebo group and 10 (45%) in the treatment arm withdrew from the study. Reasons included wanting to get pregnant, mood changes, or noncompliance with study parameters, which included not responding or returning bleeding diaries, Dr. Gray said.

A limitation of the study was that compliance was less than expected. In addition, there were challenges with rates of responses, Dr. Gray said. The study was conducted during the COVID-19 pandemic, when all in-person visits were transitioned to telehealth. Although the investigators offered payment to participants, not all returned text-message surveys. The researchers had intended to enroll 124 participants but curtailed the study early, owing to the limited number of participants.

Given that there is no standard approach to treating prolonged or excessive bleeding with etonogestrel implants, Dr. Gray said, “Our data suggests that this regimen is a simple and acceptable method to treat bothersome bleeding and that predictable bleeding may be more satisfactory than unpredictable bleeding.”

Veronica Maria Pimentel, MD, moderator of the session and a maternal-fetal medicine specialist and director of research for the ob.gyn. residency program at St. Francis Hospital, part of Trinity Health of New England in Hartford, Conn., praised the researchers for a well-designed study.

“However, unfortunately, they were not able to recruit the number of patients that they needed in order to achieve the power to show the difference [between treatment arms], so another study would have to be done to show if there is a difference,” Dr. Pimentel said.

Dr. Pimentel complimented Dr. Gray following her presentation, congratulating her for conducting a randomized, controlled trial: “That’s not easy, as you have shown, but it’s also a good try, so you can actually see how hard it is to obtain quality data from research.”

The study was supported in part by a research grant from the Investigator-Initiated Studies Program of Organon. Dr. Gray is a consultant for Johnson & Johnson. Dr. Pimentel has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

BALTIMORE – Using norethindrone acetate to induce scheduled bleeds in women of reproductive age using etonogestrel implants for contraception may reduce the amount of bothersome bleeding associated with the devices. The bleeding causes some women to have the device removed, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

In a randomized, double-blinded, placebo-controlled trial of 51 patients desiring the implants – which suppress ovulation by releasing progestin over a 3-year period – taking norethindrone acetate for 1 week every 4 weeks led to 80% of participants in the treatment group reporting satisfactory bleeding patterns with the etonogestrel implants in place.

Jordan Gray

Rates of early discontinuation have been variable, according to published literature, ranging from 13% to 21.1%, said Jordan Gray, MD, a fourth-year resident in ob.gyn. at Baylor Scott and White Medical Center, Temple, Tex., who helped conduct the new study. Reasons included bothersome bleeding. Dr. Gray and colleagues found that 24% of women in the placebo group requested removal of the implant, compared with 9% of those in the treatment group. Among these women, none requested removal for bothersome bleeding but rather for reasons such as wanting to get pregnant. One person requested removal because she did not like amenorrhea.

While the results of the study did not achieve statistical significance, owing to its size and noncompliance among some participants, it does indicate that norethindrone acetate may be helpful, Dr. Gray said.

During the study, participants in the treatment group (n = 22) received a monthly treatment regimen of 5 mg of oral norethindrone acetate daily for 7 days each month for the first 6 months after placement of an etonogestrel implant. The placebo group (n = 29) was given inert tablets prescribed in the same regimen. Both groups received products from a mail-order pharmacy.

Participants were women aged 18-48 years who desired an implant or those aged 14 years who had permission from a parent or guardian to receive the contraceptive. The study excluded people with known or suspected pregnancy, those less than 8 weeks’ post partum, those who experienced menarche less than 2 years ago, those with body mass index greater than 40, and those who received depot medroxyprogesterone acetate within the previous 12 weeks. Excessive bleeding was defined as bleeding or spotting on more than 7 consecutive days or a fifth episode of bleeding in 90 days.

Overall, 11 patients (38%) in the placebo group and 10 (45%) in the treatment arm withdrew from the study. Reasons included wanting to get pregnant, mood changes, or noncompliance with study parameters, which included not responding or returning bleeding diaries, Dr. Gray said.

A limitation of the study was that compliance was less than expected. In addition, there were challenges with rates of responses, Dr. Gray said. The study was conducted during the COVID-19 pandemic, when all in-person visits were transitioned to telehealth. Although the investigators offered payment to participants, not all returned text-message surveys. The researchers had intended to enroll 124 participants but curtailed the study early, owing to the limited number of participants.

Given that there is no standard approach to treating prolonged or excessive bleeding with etonogestrel implants, Dr. Gray said, “Our data suggests that this regimen is a simple and acceptable method to treat bothersome bleeding and that predictable bleeding may be more satisfactory than unpredictable bleeding.”

Veronica Maria Pimentel, MD, moderator of the session and a maternal-fetal medicine specialist and director of research for the ob.gyn. residency program at St. Francis Hospital, part of Trinity Health of New England in Hartford, Conn., praised the researchers for a well-designed study.

“However, unfortunately, they were not able to recruit the number of patients that they needed in order to achieve the power to show the difference [between treatment arms], so another study would have to be done to show if there is a difference,” Dr. Pimentel said.

Dr. Pimentel complimented Dr. Gray following her presentation, congratulating her for conducting a randomized, controlled trial: “That’s not easy, as you have shown, but it’s also a good try, so you can actually see how hard it is to obtain quality data from research.”

The study was supported in part by a research grant from the Investigator-Initiated Studies Program of Organon. Dr. Gray is a consultant for Johnson & Johnson. Dr. Pimentel has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

BALTIMORE – Using norethindrone acetate to induce scheduled bleeds in women of reproductive age using etonogestrel implants for contraception may reduce the amount of bothersome bleeding associated with the devices. The bleeding causes some women to have the device removed, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

In a randomized, double-blinded, placebo-controlled trial of 51 patients desiring the implants – which suppress ovulation by releasing progestin over a 3-year period – taking norethindrone acetate for 1 week every 4 weeks led to 80% of participants in the treatment group reporting satisfactory bleeding patterns with the etonogestrel implants in place.

Jordan Gray

Rates of early discontinuation have been variable, according to published literature, ranging from 13% to 21.1%, said Jordan Gray, MD, a fourth-year resident in ob.gyn. at Baylor Scott and White Medical Center, Temple, Tex., who helped conduct the new study. Reasons included bothersome bleeding. Dr. Gray and colleagues found that 24% of women in the placebo group requested removal of the implant, compared with 9% of those in the treatment group. Among these women, none requested removal for bothersome bleeding but rather for reasons such as wanting to get pregnant. One person requested removal because she did not like amenorrhea.

While the results of the study did not achieve statistical significance, owing to its size and noncompliance among some participants, it does indicate that norethindrone acetate may be helpful, Dr. Gray said.

During the study, participants in the treatment group (n = 22) received a monthly treatment regimen of 5 mg of oral norethindrone acetate daily for 7 days each month for the first 6 months after placement of an etonogestrel implant. The placebo group (n = 29) was given inert tablets prescribed in the same regimen. Both groups received products from a mail-order pharmacy.

Participants were women aged 18-48 years who desired an implant or those aged 14 years who had permission from a parent or guardian to receive the contraceptive. The study excluded people with known or suspected pregnancy, those less than 8 weeks’ post partum, those who experienced menarche less than 2 years ago, those with body mass index greater than 40, and those who received depot medroxyprogesterone acetate within the previous 12 weeks. Excessive bleeding was defined as bleeding or spotting on more than 7 consecutive days or a fifth episode of bleeding in 90 days.

Overall, 11 patients (38%) in the placebo group and 10 (45%) in the treatment arm withdrew from the study. Reasons included wanting to get pregnant, mood changes, or noncompliance with study parameters, which included not responding or returning bleeding diaries, Dr. Gray said.

A limitation of the study was that compliance was less than expected. In addition, there were challenges with rates of responses, Dr. Gray said. The study was conducted during the COVID-19 pandemic, when all in-person visits were transitioned to telehealth. Although the investigators offered payment to participants, not all returned text-message surveys. The researchers had intended to enroll 124 participants but curtailed the study early, owing to the limited number of participants.

Given that there is no standard approach to treating prolonged or excessive bleeding with etonogestrel implants, Dr. Gray said, “Our data suggests that this regimen is a simple and acceptable method to treat bothersome bleeding and that predictable bleeding may be more satisfactory than unpredictable bleeding.”

Veronica Maria Pimentel, MD, moderator of the session and a maternal-fetal medicine specialist and director of research for the ob.gyn. residency program at St. Francis Hospital, part of Trinity Health of New England in Hartford, Conn., praised the researchers for a well-designed study.

“However, unfortunately, they were not able to recruit the number of patients that they needed in order to achieve the power to show the difference [between treatment arms], so another study would have to be done to show if there is a difference,” Dr. Pimentel said.

Dr. Pimentel complimented Dr. Gray following her presentation, congratulating her for conducting a randomized, controlled trial: “That’s not easy, as you have shown, but it’s also a good try, so you can actually see how hard it is to obtain quality data from research.”

The study was supported in part by a research grant from the Investigator-Initiated Studies Program of Organon. Dr. Gray is a consultant for Johnson & Johnson. Dr. Pimentel has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

BALTIMORE – A single 60-mg daily dose of nifedipine appeared similarly effective as taking a 30-mg dose twice daily for treating hypertensive disorders in pregnancy, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.*

Isabelle Band

The findings suggest that starting patients on a once-daily 60-mg dose is therefore reasonable, Isabelle Band, BA, a medical student at the Icahn School of Medicine at Mount Sinai, New York, told attendees. Ms. Band said in an interview that there does not appear to be a consensus on the standard of care for nifedipine dosing regimen in this population but that previous in vitro studies have shown increased metabolism of nifedipine in a physiologic state that mimics pregnancy.

“I’ve spoken to some colleagues here who say that they frequently have this debate of which dosing regimen to go with,” Ms. Band said. “I was pleasantly surprised that there was no significant difference between the two dosing regimens because once-daily dosing is less burdensome for patients and will likely improve compliance and convenience for patients.” An additional benefit of once-daily dosing relates to payers because anecdotal reports suggest insurance companies do not tend to approve twice-daily dosing as readily as once-daily dosing, Ms. Band added.

Ms. Band and her colleagues conducted a retrospective chart review of all patients with hypertensive disorders of pregnancy who were admitted to the Mount Sinai Health System between Jan. 1, 2015, and April 30, 2021, and were prescribed nifedipine in a once-daily (60-mg) or twice-daily (two 30-mg) dose. They excluded patients with renal disease and those already taking hypertensives prior to admission.

Among 237 patients who met the criteria, 59% received 60 mg in a twice-daily 30-mg dose, and 41% received 60 mg in a once-daily dose. Among patients requiring an up titration, two-thirds (67%) needed an increase in the nifedipine dose – the most common adjustment – and 20.7% needed both an increase in nifedipine and an additional medication.

The researchers observed no statistically significant differences in the proportion of patients who required a dose increase or an additional antihypertensive in the group taking the twice-daily dose (33.8%) or those receiving the once-daily dose (35.7%). This finding remained statistically insignificant after controlling for gestational diabetes, delivery mode, administration of Lasix, and receipt of emergency antihypertensive treatment (P = .71). The time that passed before patients needed a dose increase was also statistically similar between the groups: 24.3 hours in the twice-daily group and 24 hours in the once-daily group (P = .49).

There were no statistically significant differences in the need for a dose increase or an additional hypertensive agent based on race, ethnicity, body mass index, or history of preeclampsia as well. However, 24.5% of those taking the once-daily dosage had a history of preeclampsia, compared with 7.2% of those taking the twice-daily dosage (P < .001). Further, the median number of prior pregnancies was two in the twice-daily group versus three in the once-daily group (P = .002).

The authors found no significant difference between the two dosing groups in the need for emergency hypertensive treatment after reaching the study dose or in readmission for blood pressure control. In the twice-daily group, 21.6% of patients needed emergency antihypertensive treatment, compared with 14.3% in the once-daily group (P = .19). Readmission was necessary for 7.2% of the twice-daily group and 6.1% of the once-daily group (P > .99).

A subgroup analysis compared those who started nifedipine antepartum and those who started it post partum, but again, no significant difference in the dosing regimens existed.

Michael Ruma, MD, a maternal-fetal medicine specialist at Perinatal Associates of New Mexico in Albuquerque, was not involved in the study and said he welcomed the results.

“We have too many choices in medicine, so we need to just simplify the plan of attack,” reducing the number of things that clinicians need to think about, Dr. Ruma said in an interview. “A singular dose is always easiest for the patient, always easier for nursing staff, and usually, if you can optimize the dosing, that’s the best approach.”

Annabeth Brewton, MD, a resident at University of Tennessee, Knoxville, agreed, adding that new parents already have a lot going on immediately post partum.

“They’re going to be breastfeeding, they’re not sleeping, they’re going to forget to take that [second] dose,” Dr. Brewton said.

Ms. Band and Dr. Brewton had no disclosures. Dr. Ruma reported consulting and speaking for Hologic and consulting for Philips Ultrasound.

Correction, 5/24/23: An earlier version of this article misstated the daily doses of nifedipine. The study compared a single 60-mg daily dose with a 30-mg dose taken twice daily.  

BALTIMORE – A single 60-mg daily dose of nifedipine appeared similarly effective as taking a 30-mg dose twice daily for treating hypertensive disorders in pregnancy, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.*

Isabelle Band

The findings suggest that starting patients on a once-daily 60-mg dose is therefore reasonable, Isabelle Band, BA, a medical student at the Icahn School of Medicine at Mount Sinai, New York, told attendees. Ms. Band said in an interview that there does not appear to be a consensus on the standard of care for nifedipine dosing regimen in this population but that previous in vitro studies have shown increased metabolism of nifedipine in a physiologic state that mimics pregnancy.

“I’ve spoken to some colleagues here who say that they frequently have this debate of which dosing regimen to go with,” Ms. Band said. “I was pleasantly surprised that there was no significant difference between the two dosing regimens because once-daily dosing is less burdensome for patients and will likely improve compliance and convenience for patients.” An additional benefit of once-daily dosing relates to payers because anecdotal reports suggest insurance companies do not tend to approve twice-daily dosing as readily as once-daily dosing, Ms. Band added.

Ms. Band and her colleagues conducted a retrospective chart review of all patients with hypertensive disorders of pregnancy who were admitted to the Mount Sinai Health System between Jan. 1, 2015, and April 30, 2021, and were prescribed nifedipine in a once-daily (60-mg) or twice-daily (two 30-mg) dose. They excluded patients with renal disease and those already taking hypertensives prior to admission.

Among 237 patients who met the criteria, 59% received 60 mg in a twice-daily 30-mg dose, and 41% received 60 mg in a once-daily dose. Among patients requiring an up titration, two-thirds (67%) needed an increase in the nifedipine dose – the most common adjustment – and 20.7% needed both an increase in nifedipine and an additional medication.

The researchers observed no statistically significant differences in the proportion of patients who required a dose increase or an additional antihypertensive in the group taking the twice-daily dose (33.8%) or those receiving the once-daily dose (35.7%). This finding remained statistically insignificant after controlling for gestational diabetes, delivery mode, administration of Lasix, and receipt of emergency antihypertensive treatment (P = .71). The time that passed before patients needed a dose increase was also statistically similar between the groups: 24.3 hours in the twice-daily group and 24 hours in the once-daily group (P = .49).

There were no statistically significant differences in the need for a dose increase or an additional hypertensive agent based on race, ethnicity, body mass index, or history of preeclampsia as well. However, 24.5% of those taking the once-daily dosage had a history of preeclampsia, compared with 7.2% of those taking the twice-daily dosage (P < .001). Further, the median number of prior pregnancies was two in the twice-daily group versus three in the once-daily group (P = .002).

The authors found no significant difference between the two dosing groups in the need for emergency hypertensive treatment after reaching the study dose or in readmission for blood pressure control. In the twice-daily group, 21.6% of patients needed emergency antihypertensive treatment, compared with 14.3% in the once-daily group (P = .19). Readmission was necessary for 7.2% of the twice-daily group and 6.1% of the once-daily group (P > .99).

A subgroup analysis compared those who started nifedipine antepartum and those who started it post partum, but again, no significant difference in the dosing regimens existed.

Michael Ruma, MD, a maternal-fetal medicine specialist at Perinatal Associates of New Mexico in Albuquerque, was not involved in the study and said he welcomed the results.

“We have too many choices in medicine, so we need to just simplify the plan of attack,” reducing the number of things that clinicians need to think about, Dr. Ruma said in an interview. “A singular dose is always easiest for the patient, always easier for nursing staff, and usually, if you can optimize the dosing, that’s the best approach.”

Annabeth Brewton, MD, a resident at University of Tennessee, Knoxville, agreed, adding that new parents already have a lot going on immediately post partum.

“They’re going to be breastfeeding, they’re not sleeping, they’re going to forget to take that [second] dose,” Dr. Brewton said.

Ms. Band and Dr. Brewton had no disclosures. Dr. Ruma reported consulting and speaking for Hologic and consulting for Philips Ultrasound.

Correction, 5/24/23: An earlier version of this article misstated the daily doses of nifedipine. The study compared a single 60-mg daily dose with a 30-mg dose taken twice daily.  

BALTIMORE – A single 60-mg daily dose of nifedipine appeared similarly effective as taking a 30-mg dose twice daily for treating hypertensive disorders in pregnancy, according to research presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.*

Isabelle Band

The findings suggest that starting patients on a once-daily 60-mg dose is therefore reasonable, Isabelle Band, BA, a medical student at the Icahn School of Medicine at Mount Sinai, New York, told attendees. Ms. Band said in an interview that there does not appear to be a consensus on the standard of care for nifedipine dosing regimen in this population but that previous in vitro studies have shown increased metabolism of nifedipine in a physiologic state that mimics pregnancy.

“I’ve spoken to some colleagues here who say that they frequently have this debate of which dosing regimen to go with,” Ms. Band said. “I was pleasantly surprised that there was no significant difference between the two dosing regimens because once-daily dosing is less burdensome for patients and will likely improve compliance and convenience for patients.” An additional benefit of once-daily dosing relates to payers because anecdotal reports suggest insurance companies do not tend to approve twice-daily dosing as readily as once-daily dosing, Ms. Band added.

Ms. Band and her colleagues conducted a retrospective chart review of all patients with hypertensive disorders of pregnancy who were admitted to the Mount Sinai Health System between Jan. 1, 2015, and April 30, 2021, and were prescribed nifedipine in a once-daily (60-mg) or twice-daily (two 30-mg) dose. They excluded patients with renal disease and those already taking hypertensives prior to admission.

Among 237 patients who met the criteria, 59% received 60 mg in a twice-daily 30-mg dose, and 41% received 60 mg in a once-daily dose. Among patients requiring an up titration, two-thirds (67%) needed an increase in the nifedipine dose – the most common adjustment – and 20.7% needed both an increase in nifedipine and an additional medication.

The researchers observed no statistically significant differences in the proportion of patients who required a dose increase or an additional antihypertensive in the group taking the twice-daily dose (33.8%) or those receiving the once-daily dose (35.7%). This finding remained statistically insignificant after controlling for gestational diabetes, delivery mode, administration of Lasix, and receipt of emergency antihypertensive treatment (P = .71). The time that passed before patients needed a dose increase was also statistically similar between the groups: 24.3 hours in the twice-daily group and 24 hours in the once-daily group (P = .49).

There were no statistically significant differences in the need for a dose increase or an additional hypertensive agent based on race, ethnicity, body mass index, or history of preeclampsia as well. However, 24.5% of those taking the once-daily dosage had a history of preeclampsia, compared with 7.2% of those taking the twice-daily dosage (P < .001). Further, the median number of prior pregnancies was two in the twice-daily group versus three in the once-daily group (P = .002).

The authors found no significant difference between the two dosing groups in the need for emergency hypertensive treatment after reaching the study dose or in readmission for blood pressure control. In the twice-daily group, 21.6% of patients needed emergency antihypertensive treatment, compared with 14.3% in the once-daily group (P = .19). Readmission was necessary for 7.2% of the twice-daily group and 6.1% of the once-daily group (P > .99).

A subgroup analysis compared those who started nifedipine antepartum and those who started it post partum, but again, no significant difference in the dosing regimens existed.

Michael Ruma, MD, a maternal-fetal medicine specialist at Perinatal Associates of New Mexico in Albuquerque, was not involved in the study and said he welcomed the results.

“We have too many choices in medicine, so we need to just simplify the plan of attack,” reducing the number of things that clinicians need to think about, Dr. Ruma said in an interview. “A singular dose is always easiest for the patient, always easier for nursing staff, and usually, if you can optimize the dosing, that’s the best approach.”

Annabeth Brewton, MD, a resident at University of Tennessee, Knoxville, agreed, adding that new parents already have a lot going on immediately post partum.

“They’re going to be breastfeeding, they’re not sleeping, they’re going to forget to take that [second] dose,” Dr. Brewton said.

Ms. Band and Dr. Brewton had no disclosures. Dr. Ruma reported consulting and speaking for Hologic and consulting for Philips Ultrasound.

Correction, 5/24/23: An earlier version of this article misstated the daily doses of nifedipine. The study compared a single 60-mg daily dose with a 30-mg dose taken twice daily.  

BALTIMORE – Less than half of the pregnant patients who met the criteria for thyroid screening were actually screened by their clinician, according to a retrospective cohort study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists in Baltimore. Those who met criteria and did receive screening had higher live birth rates and lower miscarriage rates than those who met the criteria but did not undergo screening, the study found.

“These results suggest that improving thyroid screening adherence may lead to improved pregnancy outcomes,” lead author Allan Dong, MD, of Advocate Lutheran General Hospital in Des Plaines, Ill., told attendees. “However, following targeted screening guidelines can be difficult for clinicians. In practice, universal screening for diabetes and pregnancy may provide more comprehensive screening coverage and potentially lead to improved outcomes.”

Instead of universal screening for thyroid disease, ACOG and the American Thyroid Association recommend targeted screening of high-risk patients, though ATA’s criteria are substantially broader than ACOG’s. But, Dr. Dong told attendees, “guidelines are only beneficial if they are followed appropriately,” and Ob.Gyns. have limited time to screen for risk factors in the midst of other clinical priorities. So he aimed to learn whether Ob.Gyns. were following the guidelines of either organization in screening people at higher risk for thyroid disease.

Dr. Dong and his coauthor, Melisa Lott, DO, reviewed the charts of all 1,025 patients who presented at their institution for new obstetrical visits in 2020 to determine which ones had risk factors that would qualify them for screening under ATA or ACOG guidelines. ACOG’s screening criteria included having a personal or family history of thyroid disease or type 1 diabetes, or there being clinical suspicion for thyroid disease. ATA’s screening criteria included the following:

• Personal or family history of thyroid disease.
• History of head or neck radiation.
• History of a prior thyroid surgery.
• Over age 30.
• Any autoimmune disease.
• A body mass index greater than 40 kg/m².
• History of pregnancy loss, preterm delivery, or infertility.
• Recently used amiodarone lithium or iodine-based contrast.
• Lived in an area of known iodine deficiency.
• Clinical suspicion of thyroid disease.

ATA screening criteria identified four times as many patients requiring screening than did ACOG criteria, Dr. Dong noted. Of the 198 patients who met ACOG’s criteria, 43.9% were screened with thyroid function testing. Meanwhile, 826 patients – including all those who met ACOG’s criteria – met ATA’s criteria for screening, but only 13.1% of them underwent thyroid function testing.

Live birth rates were significantly higher among patients who met ATA criteria and were screened (92.6%) than among patients who met ATA criteria but were not screened (83.3%, P = .006). Similarly, the miscarriage rate was 4.6% in patients who met ATA criteria and were screened, compared to 12.4% in patients who met the criteria but did not undergo thyroid function testing (P = .009).

“A similar difference, although not statistically significant, was noted when comparing patients who were screened appropriately per ACOG criteria with those who met criteria for screening but were not screened,” Dr. Dong told attendees. “However, our study was underpowered to detect this difference due to the lower number of patients who meet criteria for screening under ACOG guidelines.”

The researchers did not find any significant difference in preterm delivery rates.

Anna Whelan, MD, of Women & Infants Hospital of Brown University, Providence, R.I., was not involved in the study but viewed the poster and pointed out that many of the patients, if seen by a primary care provider prior to pregnancy, would likely have been screened by their PCP. The rate of underscreening therefore suggests that patients “are not getting good, consistent primary care because there’s a lack of primary care physicians,” Dr. Whelan said in an interview.

In addition, she added, “maybe not all obstetricians and those providing care, such as midwives and other providers, are aware of the [ATA] guidelines on who should be screened.” She added that additional education about thyroid screening guidelines might be helpful for providers.

Dr. Dong reported being a stock shareholder in 3M, AbbVie, General Electric, Johnson & Johnson, Medtronic, Pfizer, and Viking Therapeutics. Dr. Whelan had no disclosures.
 

BALTIMORE – Less than half of the pregnant patients who met the criteria for thyroid screening were actually screened by their clinician, according to a retrospective cohort study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists in Baltimore. Those who met criteria and did receive screening had higher live birth rates and lower miscarriage rates than those who met the criteria but did not undergo screening, the study found.

“These results suggest that improving thyroid screening adherence may lead to improved pregnancy outcomes,” lead author Allan Dong, MD, of Advocate Lutheran General Hospital in Des Plaines, Ill., told attendees. “However, following targeted screening guidelines can be difficult for clinicians. In practice, universal screening for diabetes and pregnancy may provide more comprehensive screening coverage and potentially lead to improved outcomes.”

Instead of universal screening for thyroid disease, ACOG and the American Thyroid Association recommend targeted screening of high-risk patients, though ATA’s criteria are substantially broader than ACOG’s. But, Dr. Dong told attendees, “guidelines are only beneficial if they are followed appropriately,” and Ob.Gyns. have limited time to screen for risk factors in the midst of other clinical priorities. So he aimed to learn whether Ob.Gyns. were following the guidelines of either organization in screening people at higher risk for thyroid disease.

Dr. Dong and his coauthor, Melisa Lott, DO, reviewed the charts of all 1,025 patients who presented at their institution for new obstetrical visits in 2020 to determine which ones had risk factors that would qualify them for screening under ATA or ACOG guidelines. ACOG’s screening criteria included having a personal or family history of thyroid disease or type 1 diabetes, or there being clinical suspicion for thyroid disease. ATA’s screening criteria included the following:

• Personal or family history of thyroid disease.
• History of head or neck radiation.
• History of a prior thyroid surgery.
• Over age 30.
• Any autoimmune disease.
• A body mass index greater than 40 kg/m².
• History of pregnancy loss, preterm delivery, or infertility.
• Recently used amiodarone lithium or iodine-based contrast.
• Lived in an area of known iodine deficiency.
• Clinical suspicion of thyroid disease.

ATA screening criteria identified four times as many patients requiring screening than did ACOG criteria, Dr. Dong noted. Of the 198 patients who met ACOG’s criteria, 43.9% were screened with thyroid function testing. Meanwhile, 826 patients – including all those who met ACOG’s criteria – met ATA’s criteria for screening, but only 13.1% of them underwent thyroid function testing.

Live birth rates were significantly higher among patients who met ATA criteria and were screened (92.6%) than among patients who met ATA criteria but were not screened (83.3%, P = .006). Similarly, the miscarriage rate was 4.6% in patients who met ATA criteria and were screened, compared to 12.4% in patients who met the criteria but did not undergo thyroid function testing (P = .009).

“A similar difference, although not statistically significant, was noted when comparing patients who were screened appropriately per ACOG criteria with those who met criteria for screening but were not screened,” Dr. Dong told attendees. “However, our study was underpowered to detect this difference due to the lower number of patients who meet criteria for screening under ACOG guidelines.”

The researchers did not find any significant difference in preterm delivery rates.

Anna Whelan, MD, of Women & Infants Hospital of Brown University, Providence, R.I., was not involved in the study but viewed the poster and pointed out that many of the patients, if seen by a primary care provider prior to pregnancy, would likely have been screened by their PCP. The rate of underscreening therefore suggests that patients “are not getting good, consistent primary care because there’s a lack of primary care physicians,” Dr. Whelan said in an interview.

In addition, she added, “maybe not all obstetricians and those providing care, such as midwives and other providers, are aware of the [ATA] guidelines on who should be screened.” She added that additional education about thyroid screening guidelines might be helpful for providers.

Dr. Dong reported being a stock shareholder in 3M, AbbVie, General Electric, Johnson & Johnson, Medtronic, Pfizer, and Viking Therapeutics. Dr. Whelan had no disclosures.
 

BALTIMORE – Less than half of the pregnant patients who met the criteria for thyroid screening were actually screened by their clinician, according to a retrospective cohort study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists in Baltimore. Those who met criteria and did receive screening had higher live birth rates and lower miscarriage rates than those who met the criteria but did not undergo screening, the study found.

“These results suggest that improving thyroid screening adherence may lead to improved pregnancy outcomes,” lead author Allan Dong, MD, of Advocate Lutheran General Hospital in Des Plaines, Ill., told attendees. “However, following targeted screening guidelines can be difficult for clinicians. In practice, universal screening for diabetes and pregnancy may provide more comprehensive screening coverage and potentially lead to improved outcomes.”

Instead of universal screening for thyroid disease, ACOG and the American Thyroid Association recommend targeted screening of high-risk patients, though ATA’s criteria are substantially broader than ACOG’s. But, Dr. Dong told attendees, “guidelines are only beneficial if they are followed appropriately,” and Ob.Gyns. have limited time to screen for risk factors in the midst of other clinical priorities. So he aimed to learn whether Ob.Gyns. were following the guidelines of either organization in screening people at higher risk for thyroid disease.

Dr. Dong and his coauthor, Melisa Lott, DO, reviewed the charts of all 1,025 patients who presented at their institution for new obstetrical visits in 2020 to determine which ones had risk factors that would qualify them for screening under ATA or ACOG guidelines. ACOG’s screening criteria included having a personal or family history of thyroid disease or type 1 diabetes, or there being clinical suspicion for thyroid disease. ATA’s screening criteria included the following:

• Personal or family history of thyroid disease.
• History of head or neck radiation.
• History of a prior thyroid surgery.
• Over age 30.
• Any autoimmune disease.
• A body mass index greater than 40 kg/m².
• History of pregnancy loss, preterm delivery, or infertility.
• Recently used amiodarone lithium or iodine-based contrast.
• Lived in an area of known iodine deficiency.
• Clinical suspicion of thyroid disease.

ATA screening criteria identified four times as many patients requiring screening than did ACOG criteria, Dr. Dong noted. Of the 198 patients who met ACOG’s criteria, 43.9% were screened with thyroid function testing. Meanwhile, 826 patients – including all those who met ACOG’s criteria – met ATA’s criteria for screening, but only 13.1% of them underwent thyroid function testing.

Live birth rates were significantly higher among patients who met ATA criteria and were screened (92.6%) than among patients who met ATA criteria but were not screened (83.3%, P = .006). Similarly, the miscarriage rate was 4.6% in patients who met ATA criteria and were screened, compared to 12.4% in patients who met the criteria but did not undergo thyroid function testing (P = .009).

“A similar difference, although not statistically significant, was noted when comparing patients who were screened appropriately per ACOG criteria with those who met criteria for screening but were not screened,” Dr. Dong told attendees. “However, our study was underpowered to detect this difference due to the lower number of patients who meet criteria for screening under ACOG guidelines.”

The researchers did not find any significant difference in preterm delivery rates.

Anna Whelan, MD, of Women & Infants Hospital of Brown University, Providence, R.I., was not involved in the study but viewed the poster and pointed out that many of the patients, if seen by a primary care provider prior to pregnancy, would likely have been screened by their PCP. The rate of underscreening therefore suggests that patients “are not getting good, consistent primary care because there’s a lack of primary care physicians,” Dr. Whelan said in an interview.

In addition, she added, “maybe not all obstetricians and those providing care, such as midwives and other providers, are aware of the [ATA] guidelines on who should be screened.” She added that additional education about thyroid screening guidelines might be helpful for providers.

Dr. Dong reported being a stock shareholder in 3M, AbbVie, General Electric, Johnson & Johnson, Medtronic, Pfizer, and Viking Therapeutics. Dr. Whelan had no disclosures.