Vibrating wearable device may help night time GERD

Article Type
Changed
Fri, 04/15/2022 - 08:40

 

A vibrating wearable device helped people with gastroesophageal reflux disease (GERD) stay positioned on their left side while sleeping, alleviating night time reflux symptoms, compared with sham treatment, a small, randomized study suggests.

People often report having more reflux symptoms when sleeping on their right side, and experimental studies suggest that sleeping on the right side is associated with higher esophageal acid exposure time and slower esophageal acid clearance, compared with sleeping on the left side, the authors wrote.

They cite a possible cause as the stomach being above the esophagus when a person is sleeping on their right side, resulting in more reflux.

“There are two very exciting new things that can be learned,” Arjan Bredenoord, MD, PhD, a principal investigator of the study and professor of neurogastroenterology and motility at the Academic Medical Center in Amsterdam, told this news organization. “First, we show that a device that trains people to sleep on the left side really helps to relieve nocturnal reflux symptoms. Second, the study was performed completely remotely, with the patients being at home.”

“The devices were shipped to the patients. All contact was via video calling, and questionnaires were done via links in emails that were linked to secure databases to store the patients’ symptom responses,” he added.

The findings were published online in Clinical Gastroenterology and Hepatology.
 

A study in sleep positional therapy

Researchers performed a double-blind, randomized, sham-controlled trial in 100 patients with night time GERD symptoms who wore a programmed device (about 1.5 inches square) on their chest, midsternum.

Patients were advised to sleep on their left side and randomly assigned (1:1) either to a group whose device produced a gentle vibration when they flipped onto their right side throughout sleep or to the group whose device vibrated when they flipped to the right side but only for the first 20 minutes of use (the sham intervention).

The primary outcome for success was at least a 50% reduction in the Nocturnal Gastroesophageal Reflux Disease Symptom Severity and Impact Questionnaire (N-GSSIQ) score. Secondary outcomes included change in sleep position and reflux symptoms.

In the intention-to-treat analysis, the rate of treatment success was 44% in the intervention group versus 24% in the sham group. The risk difference was 20% (95% confidence interval, 1.8% to 38.2%; P = .03).

Treatment led to a significant avoidance of sleeping on the right side (intervention 2.2% vs. sham 23.5%; P ≤ .0001) and an increased time of sleeping on the left side (intervention 60.9% vs. sham 38.5%; P ≤ .0001).

Patients in the intervention group also had more reflux-free nights (9 nights vs. 6 nights for the sham group).

After 2 weeks of treatment, the average total N-GSSIQ scores were lower in the active device group (18.8 vs. 23.7 in the sham group; P = .04).
 

Most with GERD have night time symptoms

The authors pointed out that up to 80% of patients with GERD experience symptoms during the night, such as heartburn and regurgitation, which can significantly impair sleep quality and daytime functioning.

Solutions are of high interest because current measures have shortcomings.

Raising the head-end of the bed and lengthening the time between dinner and bedtime have limited effect, the authors explained. And while proton pump inhibitors are very effective for daytime symptoms, they have limited efficacy for night time reflux symptoms.

Antireflux pillows, which are designed to keep patients on their left side through the night, have been found to result in less recumbent acid exposure and less self-reported night time reflux symptoms, but they do not allow for spontaneous body movements and can be uncomfortable, they explained.

The lightweight vibration device, made by Side Sleep Technologies BV, registers the sleep position of a subject at 30-second intervals. It categorizes sleep position as supine, right, left, prone, or upright.

Michiel Allessie, CEO of Side Sleep Technologies, told this news organization that the wearable V1.0 is sold as a consumer electronic device rather than a medical device in the United Kingdom for £99. He said the company expects to sell the V1.0 in the United States starting in June, with a target price of $99.
 

Promising but device still needs real-world testing

When asked to comment, Philip Katz, MD, a gastroenterologist at Weill Cornell Medicine, New York, said it was a fantastic study scientifically and academically incredibly interesting, but the device is not a panacea.

Dr. Katz said he will remain skeptical until the device is tested in real life and added that it’s important to remember this is one study with 100 people.

He also wondered whether there might be an even better solution in a well-designed wedge, for example, and whether the buzzing of this product might affect sleep quality. If so, would that be worth the tradeoff?

Dr. Katz noted that busy physicians may not have the time to determine whether patients truly have nocturnal GERD or just similar symptoms. This study included people who were carefully screened by the researchers for nocturnal reflux symptoms, he pointed out.

Based on this study, Dr. Katz said he would tell patients, “You have a 50% chance to be helped because their primary outcome was met by 44%.”

He said the decision is up to the patients and comes down to this: “It’s better than nothing for sure. Is it worth $100? You tell me.”

Dr. Bredenoord said the next step is a study using pH-impedance monitoring of the esophagus to show that there is also an effect on reflux episodes.

The investigational medical devices were provided free of charge and without restrictions by Side Sleep Technologies BV. Dr. Bredenoord disclosed research funding from Nutricia, Norgine, SST, Thelial, and Bayer; speaker and/or consulting fees from Laborie, EsoCap, Medtronic, Dr. Falk Pharma, Calypso Biotech, Alimentiv, Reckett Benkiser, Regeneron, and AstraZeneca; and previously owned shares in Side Sleep Technologies BV. Another coauthor received research funding from Boston Scientific and speaker and/or consulting fees from Cook and Olympus. The remaining authors have disclosed no relevant financial relationships. Dr. Katz reported being a consultant for Phathom Pharmaceuticals and Sebela.

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

Publications
Topics
Sections

 

A vibrating wearable device helped people with gastroesophageal reflux disease (GERD) stay positioned on their left side while sleeping, alleviating night time reflux symptoms, compared with sham treatment, a small, randomized study suggests.

People often report having more reflux symptoms when sleeping on their right side, and experimental studies suggest that sleeping on the right side is associated with higher esophageal acid exposure time and slower esophageal acid clearance, compared with sleeping on the left side, the authors wrote.

They cite a possible cause as the stomach being above the esophagus when a person is sleeping on their right side, resulting in more reflux.

“There are two very exciting new things that can be learned,” Arjan Bredenoord, MD, PhD, a principal investigator of the study and professor of neurogastroenterology and motility at the Academic Medical Center in Amsterdam, told this news organization. “First, we show that a device that trains people to sleep on the left side really helps to relieve nocturnal reflux symptoms. Second, the study was performed completely remotely, with the patients being at home.”

“The devices were shipped to the patients. All contact was via video calling, and questionnaires were done via links in emails that were linked to secure databases to store the patients’ symptom responses,” he added.

The findings were published online in Clinical Gastroenterology and Hepatology.
 

A study in sleep positional therapy

Researchers performed a double-blind, randomized, sham-controlled trial in 100 patients with night time GERD symptoms who wore a programmed device (about 1.5 inches square) on their chest, midsternum.

Patients were advised to sleep on their left side and randomly assigned (1:1) either to a group whose device produced a gentle vibration when they flipped onto their right side throughout sleep or to the group whose device vibrated when they flipped to the right side but only for the first 20 minutes of use (the sham intervention).

The primary outcome for success was at least a 50% reduction in the Nocturnal Gastroesophageal Reflux Disease Symptom Severity and Impact Questionnaire (N-GSSIQ) score. Secondary outcomes included change in sleep position and reflux symptoms.

In the intention-to-treat analysis, the rate of treatment success was 44% in the intervention group versus 24% in the sham group. The risk difference was 20% (95% confidence interval, 1.8% to 38.2%; P = .03).

Treatment led to a significant avoidance of sleeping on the right side (intervention 2.2% vs. sham 23.5%; P ≤ .0001) and an increased time of sleeping on the left side (intervention 60.9% vs. sham 38.5%; P ≤ .0001).

Patients in the intervention group also had more reflux-free nights (9 nights vs. 6 nights for the sham group).

After 2 weeks of treatment, the average total N-GSSIQ scores were lower in the active device group (18.8 vs. 23.7 in the sham group; P = .04).
 

Most with GERD have night time symptoms

The authors pointed out that up to 80% of patients with GERD experience symptoms during the night, such as heartburn and regurgitation, which can significantly impair sleep quality and daytime functioning.

Solutions are of high interest because current measures have shortcomings.

Raising the head-end of the bed and lengthening the time between dinner and bedtime have limited effect, the authors explained. And while proton pump inhibitors are very effective for daytime symptoms, they have limited efficacy for night time reflux symptoms.

Antireflux pillows, which are designed to keep patients on their left side through the night, have been found to result in less recumbent acid exposure and less self-reported night time reflux symptoms, but they do not allow for spontaneous body movements and can be uncomfortable, they explained.

The lightweight vibration device, made by Side Sleep Technologies BV, registers the sleep position of a subject at 30-second intervals. It categorizes sleep position as supine, right, left, prone, or upright.

Michiel Allessie, CEO of Side Sleep Technologies, told this news organization that the wearable V1.0 is sold as a consumer electronic device rather than a medical device in the United Kingdom for £99. He said the company expects to sell the V1.0 in the United States starting in June, with a target price of $99.
 

Promising but device still needs real-world testing

When asked to comment, Philip Katz, MD, a gastroenterologist at Weill Cornell Medicine, New York, said it was a fantastic study scientifically and academically incredibly interesting, but the device is not a panacea.

Dr. Katz said he will remain skeptical until the device is tested in real life and added that it’s important to remember this is one study with 100 people.

He also wondered whether there might be an even better solution in a well-designed wedge, for example, and whether the buzzing of this product might affect sleep quality. If so, would that be worth the tradeoff?

Dr. Katz noted that busy physicians may not have the time to determine whether patients truly have nocturnal GERD or just similar symptoms. This study included people who were carefully screened by the researchers for nocturnal reflux symptoms, he pointed out.

Based on this study, Dr. Katz said he would tell patients, “You have a 50% chance to be helped because their primary outcome was met by 44%.”

He said the decision is up to the patients and comes down to this: “It’s better than nothing for sure. Is it worth $100? You tell me.”

Dr. Bredenoord said the next step is a study using pH-impedance monitoring of the esophagus to show that there is also an effect on reflux episodes.

The investigational medical devices were provided free of charge and without restrictions by Side Sleep Technologies BV. Dr. Bredenoord disclosed research funding from Nutricia, Norgine, SST, Thelial, and Bayer; speaker and/or consulting fees from Laborie, EsoCap, Medtronic, Dr. Falk Pharma, Calypso Biotech, Alimentiv, Reckett Benkiser, Regeneron, and AstraZeneca; and previously owned shares in Side Sleep Technologies BV. Another coauthor received research funding from Boston Scientific and speaker and/or consulting fees from Cook and Olympus. The remaining authors have disclosed no relevant financial relationships. Dr. Katz reported being a consultant for Phathom Pharmaceuticals and Sebela.

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

 

A vibrating wearable device helped people with gastroesophageal reflux disease (GERD) stay positioned on their left side while sleeping, alleviating night time reflux symptoms, compared with sham treatment, a small, randomized study suggests.

People often report having more reflux symptoms when sleeping on their right side, and experimental studies suggest that sleeping on the right side is associated with higher esophageal acid exposure time and slower esophageal acid clearance, compared with sleeping on the left side, the authors wrote.

They cite a possible cause as the stomach being above the esophagus when a person is sleeping on their right side, resulting in more reflux.

“There are two very exciting new things that can be learned,” Arjan Bredenoord, MD, PhD, a principal investigator of the study and professor of neurogastroenterology and motility at the Academic Medical Center in Amsterdam, told this news organization. “First, we show that a device that trains people to sleep on the left side really helps to relieve nocturnal reflux symptoms. Second, the study was performed completely remotely, with the patients being at home.”

“The devices were shipped to the patients. All contact was via video calling, and questionnaires were done via links in emails that were linked to secure databases to store the patients’ symptom responses,” he added.

The findings were published online in Clinical Gastroenterology and Hepatology.
 

A study in sleep positional therapy

Researchers performed a double-blind, randomized, sham-controlled trial in 100 patients with night time GERD symptoms who wore a programmed device (about 1.5 inches square) on their chest, midsternum.

Patients were advised to sleep on their left side and randomly assigned (1:1) either to a group whose device produced a gentle vibration when they flipped onto their right side throughout sleep or to the group whose device vibrated when they flipped to the right side but only for the first 20 minutes of use (the sham intervention).

The primary outcome for success was at least a 50% reduction in the Nocturnal Gastroesophageal Reflux Disease Symptom Severity and Impact Questionnaire (N-GSSIQ) score. Secondary outcomes included change in sleep position and reflux symptoms.

In the intention-to-treat analysis, the rate of treatment success was 44% in the intervention group versus 24% in the sham group. The risk difference was 20% (95% confidence interval, 1.8% to 38.2%; P = .03).

Treatment led to a significant avoidance of sleeping on the right side (intervention 2.2% vs. sham 23.5%; P ≤ .0001) and an increased time of sleeping on the left side (intervention 60.9% vs. sham 38.5%; P ≤ .0001).

Patients in the intervention group also had more reflux-free nights (9 nights vs. 6 nights for the sham group).

After 2 weeks of treatment, the average total N-GSSIQ scores were lower in the active device group (18.8 vs. 23.7 in the sham group; P = .04).
 

Most with GERD have night time symptoms

The authors pointed out that up to 80% of patients with GERD experience symptoms during the night, such as heartburn and regurgitation, which can significantly impair sleep quality and daytime functioning.

Solutions are of high interest because current measures have shortcomings.

Raising the head-end of the bed and lengthening the time between dinner and bedtime have limited effect, the authors explained. And while proton pump inhibitors are very effective for daytime symptoms, they have limited efficacy for night time reflux symptoms.

Antireflux pillows, which are designed to keep patients on their left side through the night, have been found to result in less recumbent acid exposure and less self-reported night time reflux symptoms, but they do not allow for spontaneous body movements and can be uncomfortable, they explained.

The lightweight vibration device, made by Side Sleep Technologies BV, registers the sleep position of a subject at 30-second intervals. It categorizes sleep position as supine, right, left, prone, or upright.

Michiel Allessie, CEO of Side Sleep Technologies, told this news organization that the wearable V1.0 is sold as a consumer electronic device rather than a medical device in the United Kingdom for £99. He said the company expects to sell the V1.0 in the United States starting in June, with a target price of $99.
 

Promising but device still needs real-world testing

When asked to comment, Philip Katz, MD, a gastroenterologist at Weill Cornell Medicine, New York, said it was a fantastic study scientifically and academically incredibly interesting, but the device is not a panacea.

Dr. Katz said he will remain skeptical until the device is tested in real life and added that it’s important to remember this is one study with 100 people.

He also wondered whether there might be an even better solution in a well-designed wedge, for example, and whether the buzzing of this product might affect sleep quality. If so, would that be worth the tradeoff?

Dr. Katz noted that busy physicians may not have the time to determine whether patients truly have nocturnal GERD or just similar symptoms. This study included people who were carefully screened by the researchers for nocturnal reflux symptoms, he pointed out.

Based on this study, Dr. Katz said he would tell patients, “You have a 50% chance to be helped because their primary outcome was met by 44%.”

He said the decision is up to the patients and comes down to this: “It’s better than nothing for sure. Is it worth $100? You tell me.”

Dr. Bredenoord said the next step is a study using pH-impedance monitoring of the esophagus to show that there is also an effect on reflux episodes.

The investigational medical devices were provided free of charge and without restrictions by Side Sleep Technologies BV. Dr. Bredenoord disclosed research funding from Nutricia, Norgine, SST, Thelial, and Bayer; speaker and/or consulting fees from Laborie, EsoCap, Medtronic, Dr. Falk Pharma, Calypso Biotech, Alimentiv, Reckett Benkiser, Regeneron, and AstraZeneca; and previously owned shares in Side Sleep Technologies BV. Another coauthor received research funding from Boston Scientific and speaker and/or consulting fees from Cook and Olympus. The remaining authors have disclosed no relevant financial relationships. Dr. Katz reported being a consultant for Phathom Pharmaceuticals and Sebela.

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

Publications
Publications
Topics
Article Type
Sections
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Gaps in follow-up care put kids with asthma at risk of severe recurrence

Article Type
Changed
Fri, 04/15/2022 - 08:46

Jo Ward’s twin boys have been to the emergency department for respiratory problems about as many times as the dozen years they’ve been alive. Both have asthma and bronchopulmonary dysplasia, a form of chronic airway damage that can occur in children born premature, as the twins were. But each time Ms. Ward took them in for treatment during an acute bout of breathing distress, the staff told her to schedule a follow-up visit for the children with their physician only if they didn’t get better, not regardless of the outcome – as medical guidelines recommend.

“They asked questions, they did the exams, but they really didn’t give you a lot of information to help you at home,” Ms. Ward told this news organization. If they had, she doesn’t think she’d have needed to take them in for emergency care so often.

new study, published in Academic Pediatrics, suggests she’s right.

Current clinical guidelines for asthma recommend that patients who visit the ED for an asthma-related problem should have a follow-up appointment within a month after the visit, independent of how well they have recovered once home, according to Naomi S. Bardach, MD, a professor of pediatrics and health policy at the University of California, San Francisco, who led the new study.

Her research found that children who have a follow-up appointment within 2 weeks of such a visit are less likely to come back again the next year. Yet the study also found that only about one in five youth had a follow-up visit within that 2-week window.

“The emergency department visit is probably a sign that they need some additional attention for their asthma,” Dr. Bardach said. “We know we can prevent emergency department visits if they get the right kind of medication or if they figure out how to avoid the things that are going to cause an asthma exacerbation or flare.”

For the study, Dr. Bardach and colleagues analyzed data from California, Vermont, and Massachusetts for all asthma-related emergency visits for patients aged 3-21 years between 2013 and 2016.

Out of the 90,267 such visits they identified, 22.6% of patients had a follow-up within 2 weeks, more often by patients who were younger, had commercial insurance, had evidence of prior asthma, or had complex chronic conditions.

Whereas 5.7% of patients who had follow-up visits returned to the ED within 60 days, 6.4% of those who didn’t came back – a 12% difference (P < .001). The gap was larger a year out, with 25% of those with follow-ups returning to the ED, compared with 28.3% of those without follow-ups returning (P < .001), according to the researchers.

Overall, Dr. Bardach’s group estimates that for every 30 children who have follow-up visits with a physician, one would avoid a return trip to the emergency department for asthma within a year.

But given the sheer number of asthma-related trips to the ED each year – 164,145 for kids age 1-17 years in the United States in 2016 alone – that translates into big numbers of kids not going back to the hospital: approximately 72,000 such trips avoided at a savings to the health care system of at least $8.6 million annually.
 

 

 

Missed opportunities

Had Ms. Ward’s boys been among the one in five to receive follow-up care earlier in their lives, she might have saved a significant amount of time, money, anxiety, and heartache. When the twins were 9 years old, she took them to a new pediatric pulmonologist. That changed everything. In that first visit, “they gave me way more information than I ever had in the first 9 years,” she said.

The doctor told Ms. Ward to keep steroids on hand, gave her a prescription for extra doses of the powerful medication, and explained that they needed to be used within 24 hours of the first sign of a breathing problem.

“She said if you give them the steroids right away, it keeps them out of the emergency room, and that’s actually worked,” Ms. Ward said. “She made sure we had care plans every visit and asked me each time if I still had it or we needed to rewrite it. They gave me signs to look for, for when to go to hospital visits. I think that when you go to the doctor, they should be telling you stuff like that.”

Dr. Bardach said visits with a primary care doctor or asthma specialist offer families a chance to receive information to keep the condition from becoming critical.

“Going to that follow-up visit, they can get access to education from the provider about how to avoid things that trigger asthma, and there’s medication that kids can take that keeps the lungs calm and less likely to have a big asthma reaction, so getting access to that medication can be really helpful,” she said.

That was the case for Amy Davenport, of Chapel Hill, N.C., whose 6-year-old son has been to the ED twice for his asthma.

The first time, when he was 3, he was having trouble breathing with a respiratory tract infection and received nebulizer treatment – although he received it in the ED since no beds were available in the ICU. The staff did tell Ms. Davenport to follow up with her primary care provider, but her son’s pediatrician was reluctant to diagnose him with asthma at such a young age and didn’t prescribe any maintenance medications.

A few months later, Ms. Davenport and her son found themselves back in the hospital, and an ICU bed was open this time. The critical care staff referred Davenport to a pediatric pulmonary specialist, and they haven’t been back to the hospital since. Ms. Davenport said she believes if they’d received a maintenance medication after the first visit, it likely would have prevented the second one.

“I’ve definitely seen now that, after the second admission, we got an asthma action plan and it said exactly what to do,” she said. “I felt like we had really good follow-up. We had that action plan on our refrigerator for a long time, and it helped us as parents with three small children to manage.”

Of course, follow-up care takes time – time away from work and school that not all families can spare, the researchers acknowledged. Telehealth may be an option, especially after its use expanded during the COVID-19 pandemic.

“We know that health systems have a hard time being flexible enough to actually have a kid be able to make an appointment within a short period of time, and we also know it’s hard for families sometimes to go back into a clinical setting within a certain period of time,” Dr. Bardach said. The urgency for the appointment may wane for those whose children seem to be doing better.

When the researchers adjusted their calculations for socioeconomic status, the results didn’t change much. But the study did find that patients with private insurance were about twice as likely to have follow-up visits as those on Medicaid (43.7% vs. 21.7%). And “the content and conduct” of the follow-up visit makes a difference as well.

Ms. Ward, whose boys are insured through Medicaid, recalled several visits to the ED where she had to push the staff to get the care her children needed. In one case, when one of her boys was a year old and struggling to breathe, the emergency doctor handed her a prescription and recommended she fill it at a neighborhood drugstore that would be cheaper than the hospital’s pharmacy. Then a nurse came in to begin the discharge process.

“I said no, ‘we’re not ready yet. Look at him,’” Ms. Ward said. The nurse took a pulse oximeter reading that showed the boy’s oxygen levels were at 84%, dangerously low. “If I wasn’t so knowledgeable and paid attention when they were born, since they were preemies, if it would have been somebody else, they probably would’ve went home and he’d have died.”

With the pediatric pulmonologist the boys have now, Ms. Ward said she feels more capable of managing their asthma and knowing how to reduce the likelihood that they’ll need to visit the ED.

“Part of what we’re seeing here is that having an existing and trusting relationship with a clinician can be helpful to kids with asthma,” Dr. Bardach said. “If we help establish and maintain those connections, and explain how important that connection can be, that can also help somebody with asthma overall.”

The research was funded by the Agency for Healthcare Research and Quality. The authors disclosed no relevant financial relationships.

 

 

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

Publications
Topics
Sections

Jo Ward’s twin boys have been to the emergency department for respiratory problems about as many times as the dozen years they’ve been alive. Both have asthma and bronchopulmonary dysplasia, a form of chronic airway damage that can occur in children born premature, as the twins were. But each time Ms. Ward took them in for treatment during an acute bout of breathing distress, the staff told her to schedule a follow-up visit for the children with their physician only if they didn’t get better, not regardless of the outcome – as medical guidelines recommend.

“They asked questions, they did the exams, but they really didn’t give you a lot of information to help you at home,” Ms. Ward told this news organization. If they had, she doesn’t think she’d have needed to take them in for emergency care so often.

new study, published in Academic Pediatrics, suggests she’s right.

Current clinical guidelines for asthma recommend that patients who visit the ED for an asthma-related problem should have a follow-up appointment within a month after the visit, independent of how well they have recovered once home, according to Naomi S. Bardach, MD, a professor of pediatrics and health policy at the University of California, San Francisco, who led the new study.

Her research found that children who have a follow-up appointment within 2 weeks of such a visit are less likely to come back again the next year. Yet the study also found that only about one in five youth had a follow-up visit within that 2-week window.

“The emergency department visit is probably a sign that they need some additional attention for their asthma,” Dr. Bardach said. “We know we can prevent emergency department visits if they get the right kind of medication or if they figure out how to avoid the things that are going to cause an asthma exacerbation or flare.”

For the study, Dr. Bardach and colleagues analyzed data from California, Vermont, and Massachusetts for all asthma-related emergency visits for patients aged 3-21 years between 2013 and 2016.

Out of the 90,267 such visits they identified, 22.6% of patients had a follow-up within 2 weeks, more often by patients who were younger, had commercial insurance, had evidence of prior asthma, or had complex chronic conditions.

Whereas 5.7% of patients who had follow-up visits returned to the ED within 60 days, 6.4% of those who didn’t came back – a 12% difference (P < .001). The gap was larger a year out, with 25% of those with follow-ups returning to the ED, compared with 28.3% of those without follow-ups returning (P < .001), according to the researchers.

Overall, Dr. Bardach’s group estimates that for every 30 children who have follow-up visits with a physician, one would avoid a return trip to the emergency department for asthma within a year.

But given the sheer number of asthma-related trips to the ED each year – 164,145 for kids age 1-17 years in the United States in 2016 alone – that translates into big numbers of kids not going back to the hospital: approximately 72,000 such trips avoided at a savings to the health care system of at least $8.6 million annually.
 

 

 

Missed opportunities

Had Ms. Ward’s boys been among the one in five to receive follow-up care earlier in their lives, she might have saved a significant amount of time, money, anxiety, and heartache. When the twins were 9 years old, she took them to a new pediatric pulmonologist. That changed everything. In that first visit, “they gave me way more information than I ever had in the first 9 years,” she said.

The doctor told Ms. Ward to keep steroids on hand, gave her a prescription for extra doses of the powerful medication, and explained that they needed to be used within 24 hours of the first sign of a breathing problem.

“She said if you give them the steroids right away, it keeps them out of the emergency room, and that’s actually worked,” Ms. Ward said. “She made sure we had care plans every visit and asked me each time if I still had it or we needed to rewrite it. They gave me signs to look for, for when to go to hospital visits. I think that when you go to the doctor, they should be telling you stuff like that.”

Dr. Bardach said visits with a primary care doctor or asthma specialist offer families a chance to receive information to keep the condition from becoming critical.

“Going to that follow-up visit, they can get access to education from the provider about how to avoid things that trigger asthma, and there’s medication that kids can take that keeps the lungs calm and less likely to have a big asthma reaction, so getting access to that medication can be really helpful,” she said.

That was the case for Amy Davenport, of Chapel Hill, N.C., whose 6-year-old son has been to the ED twice for his asthma.

The first time, when he was 3, he was having trouble breathing with a respiratory tract infection and received nebulizer treatment – although he received it in the ED since no beds were available in the ICU. The staff did tell Ms. Davenport to follow up with her primary care provider, but her son’s pediatrician was reluctant to diagnose him with asthma at such a young age and didn’t prescribe any maintenance medications.

A few months later, Ms. Davenport and her son found themselves back in the hospital, and an ICU bed was open this time. The critical care staff referred Davenport to a pediatric pulmonary specialist, and they haven’t been back to the hospital since. Ms. Davenport said she believes if they’d received a maintenance medication after the first visit, it likely would have prevented the second one.

“I’ve definitely seen now that, after the second admission, we got an asthma action plan and it said exactly what to do,” she said. “I felt like we had really good follow-up. We had that action plan on our refrigerator for a long time, and it helped us as parents with three small children to manage.”

Of course, follow-up care takes time – time away from work and school that not all families can spare, the researchers acknowledged. Telehealth may be an option, especially after its use expanded during the COVID-19 pandemic.

“We know that health systems have a hard time being flexible enough to actually have a kid be able to make an appointment within a short period of time, and we also know it’s hard for families sometimes to go back into a clinical setting within a certain period of time,” Dr. Bardach said. The urgency for the appointment may wane for those whose children seem to be doing better.

When the researchers adjusted their calculations for socioeconomic status, the results didn’t change much. But the study did find that patients with private insurance were about twice as likely to have follow-up visits as those on Medicaid (43.7% vs. 21.7%). And “the content and conduct” of the follow-up visit makes a difference as well.

Ms. Ward, whose boys are insured through Medicaid, recalled several visits to the ED where she had to push the staff to get the care her children needed. In one case, when one of her boys was a year old and struggling to breathe, the emergency doctor handed her a prescription and recommended she fill it at a neighborhood drugstore that would be cheaper than the hospital’s pharmacy. Then a nurse came in to begin the discharge process.

“I said no, ‘we’re not ready yet. Look at him,’” Ms. Ward said. The nurse took a pulse oximeter reading that showed the boy’s oxygen levels were at 84%, dangerously low. “If I wasn’t so knowledgeable and paid attention when they were born, since they were preemies, if it would have been somebody else, they probably would’ve went home and he’d have died.”

With the pediatric pulmonologist the boys have now, Ms. Ward said she feels more capable of managing their asthma and knowing how to reduce the likelihood that they’ll need to visit the ED.

“Part of what we’re seeing here is that having an existing and trusting relationship with a clinician can be helpful to kids with asthma,” Dr. Bardach said. “If we help establish and maintain those connections, and explain how important that connection can be, that can also help somebody with asthma overall.”

The research was funded by the Agency for Healthcare Research and Quality. The authors disclosed no relevant financial relationships.

 

 

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

Jo Ward’s twin boys have been to the emergency department for respiratory problems about as many times as the dozen years they’ve been alive. Both have asthma and bronchopulmonary dysplasia, a form of chronic airway damage that can occur in children born premature, as the twins were. But each time Ms. Ward took them in for treatment during an acute bout of breathing distress, the staff told her to schedule a follow-up visit for the children with their physician only if they didn’t get better, not regardless of the outcome – as medical guidelines recommend.

“They asked questions, they did the exams, but they really didn’t give you a lot of information to help you at home,” Ms. Ward told this news organization. If they had, she doesn’t think she’d have needed to take them in for emergency care so often.

new study, published in Academic Pediatrics, suggests she’s right.

Current clinical guidelines for asthma recommend that patients who visit the ED for an asthma-related problem should have a follow-up appointment within a month after the visit, independent of how well they have recovered once home, according to Naomi S. Bardach, MD, a professor of pediatrics and health policy at the University of California, San Francisco, who led the new study.

Her research found that children who have a follow-up appointment within 2 weeks of such a visit are less likely to come back again the next year. Yet the study also found that only about one in five youth had a follow-up visit within that 2-week window.

“The emergency department visit is probably a sign that they need some additional attention for their asthma,” Dr. Bardach said. “We know we can prevent emergency department visits if they get the right kind of medication or if they figure out how to avoid the things that are going to cause an asthma exacerbation or flare.”

For the study, Dr. Bardach and colleagues analyzed data from California, Vermont, and Massachusetts for all asthma-related emergency visits for patients aged 3-21 years between 2013 and 2016.

Out of the 90,267 such visits they identified, 22.6% of patients had a follow-up within 2 weeks, more often by patients who were younger, had commercial insurance, had evidence of prior asthma, or had complex chronic conditions.

Whereas 5.7% of patients who had follow-up visits returned to the ED within 60 days, 6.4% of those who didn’t came back – a 12% difference (P < .001). The gap was larger a year out, with 25% of those with follow-ups returning to the ED, compared with 28.3% of those without follow-ups returning (P < .001), according to the researchers.

Overall, Dr. Bardach’s group estimates that for every 30 children who have follow-up visits with a physician, one would avoid a return trip to the emergency department for asthma within a year.

But given the sheer number of asthma-related trips to the ED each year – 164,145 for kids age 1-17 years in the United States in 2016 alone – that translates into big numbers of kids not going back to the hospital: approximately 72,000 such trips avoided at a savings to the health care system of at least $8.6 million annually.
 

 

 

Missed opportunities

Had Ms. Ward’s boys been among the one in five to receive follow-up care earlier in their lives, she might have saved a significant amount of time, money, anxiety, and heartache. When the twins were 9 years old, she took them to a new pediatric pulmonologist. That changed everything. In that first visit, “they gave me way more information than I ever had in the first 9 years,” she said.

The doctor told Ms. Ward to keep steroids on hand, gave her a prescription for extra doses of the powerful medication, and explained that they needed to be used within 24 hours of the first sign of a breathing problem.

“She said if you give them the steroids right away, it keeps them out of the emergency room, and that’s actually worked,” Ms. Ward said. “She made sure we had care plans every visit and asked me each time if I still had it or we needed to rewrite it. They gave me signs to look for, for when to go to hospital visits. I think that when you go to the doctor, they should be telling you stuff like that.”

Dr. Bardach said visits with a primary care doctor or asthma specialist offer families a chance to receive information to keep the condition from becoming critical.

“Going to that follow-up visit, they can get access to education from the provider about how to avoid things that trigger asthma, and there’s medication that kids can take that keeps the lungs calm and less likely to have a big asthma reaction, so getting access to that medication can be really helpful,” she said.

That was the case for Amy Davenport, of Chapel Hill, N.C., whose 6-year-old son has been to the ED twice for his asthma.

The first time, when he was 3, he was having trouble breathing with a respiratory tract infection and received nebulizer treatment – although he received it in the ED since no beds were available in the ICU. The staff did tell Ms. Davenport to follow up with her primary care provider, but her son’s pediatrician was reluctant to diagnose him with asthma at such a young age and didn’t prescribe any maintenance medications.

A few months later, Ms. Davenport and her son found themselves back in the hospital, and an ICU bed was open this time. The critical care staff referred Davenport to a pediatric pulmonary specialist, and they haven’t been back to the hospital since. Ms. Davenport said she believes if they’d received a maintenance medication after the first visit, it likely would have prevented the second one.

“I’ve definitely seen now that, after the second admission, we got an asthma action plan and it said exactly what to do,” she said. “I felt like we had really good follow-up. We had that action plan on our refrigerator for a long time, and it helped us as parents with three small children to manage.”

Of course, follow-up care takes time – time away from work and school that not all families can spare, the researchers acknowledged. Telehealth may be an option, especially after its use expanded during the COVID-19 pandemic.

“We know that health systems have a hard time being flexible enough to actually have a kid be able to make an appointment within a short period of time, and we also know it’s hard for families sometimes to go back into a clinical setting within a certain period of time,” Dr. Bardach said. The urgency for the appointment may wane for those whose children seem to be doing better.

When the researchers adjusted their calculations for socioeconomic status, the results didn’t change much. But the study did find that patients with private insurance were about twice as likely to have follow-up visits as those on Medicaid (43.7% vs. 21.7%). And “the content and conduct” of the follow-up visit makes a difference as well.

Ms. Ward, whose boys are insured through Medicaid, recalled several visits to the ED where she had to push the staff to get the care her children needed. In one case, when one of her boys was a year old and struggling to breathe, the emergency doctor handed her a prescription and recommended she fill it at a neighborhood drugstore that would be cheaper than the hospital’s pharmacy. Then a nurse came in to begin the discharge process.

“I said no, ‘we’re not ready yet. Look at him,’” Ms. Ward said. The nurse took a pulse oximeter reading that showed the boy’s oxygen levels were at 84%, dangerously low. “If I wasn’t so knowledgeable and paid attention when they were born, since they were preemies, if it would have been somebody else, they probably would’ve went home and he’d have died.”

With the pediatric pulmonologist the boys have now, Ms. Ward said she feels more capable of managing their asthma and knowing how to reduce the likelihood that they’ll need to visit the ED.

“Part of what we’re seeing here is that having an existing and trusting relationship with a clinician can be helpful to kids with asthma,” Dr. Bardach said. “If we help establish and maintain those connections, and explain how important that connection can be, that can also help somebody with asthma overall.”

The research was funded by the Agency for Healthcare Research and Quality. The authors disclosed no relevant financial relationships.

 

 

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

Publications
Publications
Topics
Article Type
Sections
Article Source

FROM ACADEMIC PEDIATRICS

Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

New Barrett’s esophagus guideline reduces reliance on endoscopy

Article Type
Changed
Fri, 04/15/2022 - 08:41

 

A swallowable, capsule-sponge device used to sample biomarkers offers a reliable, noninvasive alternative to endoscopy for diagnosing Barrett’s esophagus, according to a new guideline from the American College of Gastroenterology.

In addition, the guideline recommends that patients with Barrett’s esophagus with segments of less than 3 cm be screened every 5 years, but if their Barrett’s esophagus segments are 5 cm or greater, they should be screened every 3 years.

“We don’t want to scope everyone for the lowest risk of cancer,” lead author Nicholas J. Shaheen, MD, MPH, chief of gastroenterology and hepatology at the University of North Carolina School of Medicine, Chapel Hill, told this news organization.

“The traditional way to diagnose Barrett’s esophagus is by upper endoscopy, but it’s expensive and not available everywhere,” he said. “One big change since the last iteration of this guideline is that there’s been a development of nonendoscopic screening modalities.”

The guideline was published in The American Journal of Gastroenterology.
 

Progress with swallowable devices

Solid evidence supports the Cytosponge, a capsule containing a compressed spherical polyurethane sponge attached to a string. The sponge expands to a sphere when the capsule dissolves after being swallowed, Dr. Shaheen said.

When withdrawn, the sponge contains esophageal cytology samples that can be used to identify biomarkers for Barrett’s esophagus, either the protein trefoil factor 3 expressed in intestinal metaplasia or methylated DNA markers associated with Barrett’s esophagus mucosa.

More than 90% of participants in trials have been able to swallow the device. Some mild gagging or throat discomfort has been reported.

In one trial, patients with chronic reflux were randomly assigned to either swallow the Cytosponge or be screened by endoscopy based on the practitioner’s usual care. Any diagnosis with the Cytosponge was confirmed with endoscopy. Barrett’s esophagus was found in 2% of patients who had undergone the Cytosponge procedure, versus less than 1% of those screened in the usual way. Of the 6,834 patients in the Cytosponge group, nine were diagnosed with dysplastic Barrett’s esophagus or stage I esophagogastric cancer, versus none of the 6,388 participants in the usual-care group.

“At least for now, we’re using the same guidance that we used for endoscopy to decide who might be best served by these devices,” Dr. Shaheen said. “There are not good data to make a recommendation yet, but you could easily imagine how you could broaden screening guidelines by having a cheaper, more available test.”

Screening for esophageal cancer may one day be as common as screening for colon cancer, said Herbert C. Wolfsen, MD, a consultant in gastroenterology at the Mayo Clinic in Jacksonville, Florida, and professor of medicine at the Mayo Clinic College of Medicine, Rochester, Minn. He was not involved in writing the new guideline.

“We’ve known for years that at least half of patients with esophageal cancer have little, if any, reflux symptoms,” he told this news organization. “This is an area where the guidelines have been consistent, but I think we’re going to see them start to change.”
 

Additional recommendations

The expert panel of the new guideline held off on recommending the use of biomarkers more generally, deeming the evidence insufficient.

 

 

The new guideline also endorses endoscopic treatment for dysplastic Barrett’s esophagus but not for Barrett’s esophagus with no dysplasia.

For the first time, it recommends that patients undergo surveillance after successful ablation.

Dr. Wolfsen took note of the guideline’s recommendation that clinicians benchmark their practices against published standards.

The guideline mentions “documentation of landmarks and extent of [Barrett’s esophagus], not obtaining biopsies in the setting of a normal-appearing squamocolumnar junction, sampling using the Seattle biopsy protocol, and performing surveillance endoscopy in patients with [nondysplastic Barrett’s esophagus] no sooner than 3-5 years.”

“The acceptance and implementation of these quality metrics is important,” Dr. Wolfsen said.

However, the guideline underscores the need for considerably more research, he added.

“This group did a fabulous job,” Dr. Wolfsen said. “But when it comes to getting a consensus and people on board, all headed in the same direction, it’s hard when you’re not working with very good data.”

Dr. Shaheen reports financial relationships with Medtronic, Steris, Pentax, CDx Diagnostics, Interpace Diagnostics, Lucid Medical, Cernostics, Phathom Pharmaceuticals, Exact Sciences, Aqua Medical, and Cook Medical. Dr. Wolfsen reports no relevant financial relationships.

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

Publications
Topics
Sections

 

A swallowable, capsule-sponge device used to sample biomarkers offers a reliable, noninvasive alternative to endoscopy for diagnosing Barrett’s esophagus, according to a new guideline from the American College of Gastroenterology.

In addition, the guideline recommends that patients with Barrett’s esophagus with segments of less than 3 cm be screened every 5 years, but if their Barrett’s esophagus segments are 5 cm or greater, they should be screened every 3 years.

“We don’t want to scope everyone for the lowest risk of cancer,” lead author Nicholas J. Shaheen, MD, MPH, chief of gastroenterology and hepatology at the University of North Carolina School of Medicine, Chapel Hill, told this news organization.

“The traditional way to diagnose Barrett’s esophagus is by upper endoscopy, but it’s expensive and not available everywhere,” he said. “One big change since the last iteration of this guideline is that there’s been a development of nonendoscopic screening modalities.”

The guideline was published in The American Journal of Gastroenterology.
 

Progress with swallowable devices

Solid evidence supports the Cytosponge, a capsule containing a compressed spherical polyurethane sponge attached to a string. The sponge expands to a sphere when the capsule dissolves after being swallowed, Dr. Shaheen said.

When withdrawn, the sponge contains esophageal cytology samples that can be used to identify biomarkers for Barrett’s esophagus, either the protein trefoil factor 3 expressed in intestinal metaplasia or methylated DNA markers associated with Barrett’s esophagus mucosa.

More than 90% of participants in trials have been able to swallow the device. Some mild gagging or throat discomfort has been reported.

In one trial, patients with chronic reflux were randomly assigned to either swallow the Cytosponge or be screened by endoscopy based on the practitioner’s usual care. Any diagnosis with the Cytosponge was confirmed with endoscopy. Barrett’s esophagus was found in 2% of patients who had undergone the Cytosponge procedure, versus less than 1% of those screened in the usual way. Of the 6,834 patients in the Cytosponge group, nine were diagnosed with dysplastic Barrett’s esophagus or stage I esophagogastric cancer, versus none of the 6,388 participants in the usual-care group.

“At least for now, we’re using the same guidance that we used for endoscopy to decide who might be best served by these devices,” Dr. Shaheen said. “There are not good data to make a recommendation yet, but you could easily imagine how you could broaden screening guidelines by having a cheaper, more available test.”

Screening for esophageal cancer may one day be as common as screening for colon cancer, said Herbert C. Wolfsen, MD, a consultant in gastroenterology at the Mayo Clinic in Jacksonville, Florida, and professor of medicine at the Mayo Clinic College of Medicine, Rochester, Minn. He was not involved in writing the new guideline.

“We’ve known for years that at least half of patients with esophageal cancer have little, if any, reflux symptoms,” he told this news organization. “This is an area where the guidelines have been consistent, but I think we’re going to see them start to change.”
 

Additional recommendations

The expert panel of the new guideline held off on recommending the use of biomarkers more generally, deeming the evidence insufficient.

 

 

The new guideline also endorses endoscopic treatment for dysplastic Barrett’s esophagus but not for Barrett’s esophagus with no dysplasia.

For the first time, it recommends that patients undergo surveillance after successful ablation.

Dr. Wolfsen took note of the guideline’s recommendation that clinicians benchmark their practices against published standards.

The guideline mentions “documentation of landmarks and extent of [Barrett’s esophagus], not obtaining biopsies in the setting of a normal-appearing squamocolumnar junction, sampling using the Seattle biopsy protocol, and performing surveillance endoscopy in patients with [nondysplastic Barrett’s esophagus] no sooner than 3-5 years.”

“The acceptance and implementation of these quality metrics is important,” Dr. Wolfsen said.

However, the guideline underscores the need for considerably more research, he added.

“This group did a fabulous job,” Dr. Wolfsen said. “But when it comes to getting a consensus and people on board, all headed in the same direction, it’s hard when you’re not working with very good data.”

Dr. Shaheen reports financial relationships with Medtronic, Steris, Pentax, CDx Diagnostics, Interpace Diagnostics, Lucid Medical, Cernostics, Phathom Pharmaceuticals, Exact Sciences, Aqua Medical, and Cook Medical. Dr. Wolfsen reports no relevant financial relationships.

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

 

A swallowable, capsule-sponge device used to sample biomarkers offers a reliable, noninvasive alternative to endoscopy for diagnosing Barrett’s esophagus, according to a new guideline from the American College of Gastroenterology.

In addition, the guideline recommends that patients with Barrett’s esophagus with segments of less than 3 cm be screened every 5 years, but if their Barrett’s esophagus segments are 5 cm or greater, they should be screened every 3 years.

“We don’t want to scope everyone for the lowest risk of cancer,” lead author Nicholas J. Shaheen, MD, MPH, chief of gastroenterology and hepatology at the University of North Carolina School of Medicine, Chapel Hill, told this news organization.

“The traditional way to diagnose Barrett’s esophagus is by upper endoscopy, but it’s expensive and not available everywhere,” he said. “One big change since the last iteration of this guideline is that there’s been a development of nonendoscopic screening modalities.”

The guideline was published in The American Journal of Gastroenterology.
 

Progress with swallowable devices

Solid evidence supports the Cytosponge, a capsule containing a compressed spherical polyurethane sponge attached to a string. The sponge expands to a sphere when the capsule dissolves after being swallowed, Dr. Shaheen said.

When withdrawn, the sponge contains esophageal cytology samples that can be used to identify biomarkers for Barrett’s esophagus, either the protein trefoil factor 3 expressed in intestinal metaplasia or methylated DNA markers associated with Barrett’s esophagus mucosa.

More than 90% of participants in trials have been able to swallow the device. Some mild gagging or throat discomfort has been reported.

In one trial, patients with chronic reflux were randomly assigned to either swallow the Cytosponge or be screened by endoscopy based on the practitioner’s usual care. Any diagnosis with the Cytosponge was confirmed with endoscopy. Barrett’s esophagus was found in 2% of patients who had undergone the Cytosponge procedure, versus less than 1% of those screened in the usual way. Of the 6,834 patients in the Cytosponge group, nine were diagnosed with dysplastic Barrett’s esophagus or stage I esophagogastric cancer, versus none of the 6,388 participants in the usual-care group.

“At least for now, we’re using the same guidance that we used for endoscopy to decide who might be best served by these devices,” Dr. Shaheen said. “There are not good data to make a recommendation yet, but you could easily imagine how you could broaden screening guidelines by having a cheaper, more available test.”

Screening for esophageal cancer may one day be as common as screening for colon cancer, said Herbert C. Wolfsen, MD, a consultant in gastroenterology at the Mayo Clinic in Jacksonville, Florida, and professor of medicine at the Mayo Clinic College of Medicine, Rochester, Minn. He was not involved in writing the new guideline.

“We’ve known for years that at least half of patients with esophageal cancer have little, if any, reflux symptoms,” he told this news organization. “This is an area where the guidelines have been consistent, but I think we’re going to see them start to change.”
 

Additional recommendations

The expert panel of the new guideline held off on recommending the use of biomarkers more generally, deeming the evidence insufficient.

 

 

The new guideline also endorses endoscopic treatment for dysplastic Barrett’s esophagus but not for Barrett’s esophagus with no dysplasia.

For the first time, it recommends that patients undergo surveillance after successful ablation.

Dr. Wolfsen took note of the guideline’s recommendation that clinicians benchmark their practices against published standards.

The guideline mentions “documentation of landmarks and extent of [Barrett’s esophagus], not obtaining biopsies in the setting of a normal-appearing squamocolumnar junction, sampling using the Seattle biopsy protocol, and performing surveillance endoscopy in patients with [nondysplastic Barrett’s esophagus] no sooner than 3-5 years.”

“The acceptance and implementation of these quality metrics is important,” Dr. Wolfsen said.

However, the guideline underscores the need for considerably more research, he added.

“This group did a fabulous job,” Dr. Wolfsen said. “But when it comes to getting a consensus and people on board, all headed in the same direction, it’s hard when you’re not working with very good data.”

Dr. Shaheen reports financial relationships with Medtronic, Steris, Pentax, CDx Diagnostics, Interpace Diagnostics, Lucid Medical, Cernostics, Phathom Pharmaceuticals, Exact Sciences, Aqua Medical, and Cook Medical. Dr. Wolfsen reports no relevant financial relationships.

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

Publications
Publications
Topics
Article Type
Sections
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Statins tied to lower risk for parkinsonism

Article Type
Changed
Thu, 12/15/2022 - 15:38

Statins may protect against age-related parkinsonism, new research suggests. An observational study showed older adults taking statins had a lower risk for parkinsonism than their counterparts not taking statins – an effect that may be partially mediated by less severe intracranial atherosclerosis in statin users.

“These findings further support the idea that cerebrovascular disease pathologies accumulating in older brains may be an unrecognized contributor to the common occurrence of parkinsonism in old age,” the investigators wrote. “More importantly, these findings suggest that statins may have a potential therapeutic role in decreasing the magnitude of parkinsonism in older adults,” they added.

The study was published online in Neurology.
 

No clinical recommendations ... yet

The findings are based on 2,841 older adults enrolled in one of three ongoing clinical pathological studies at Rush Alzheimer’s Disease Center, Chicago.

Participants’ average age at baseline was 76 years, and 75% were women. None had parkinsonism at the start of the study. One-third of participants (n = 936) were taking statins. During an average follow-up of 6 years, 1,432 (50%) participants developed parkinsonism.

After controlling for demographics, vascular risk factors, and diseases, use of a statin at baseline was associated with a 16% lower risk for parkinsonism (hazard ratio, 0.84; 95% confidence interval, 0.74-0.96; P = .008). Compared with low-intensity statin therapy, moderate- or high-intensity statin therapy was associated with a 7% lower risk for parkinsonism (HR, 0.93; 95% CI, 0.87-1.00; P = .043).

The researchers also examined the brains of 1,044 people who died during the study at a mean age of 89 years. They found statin use prior to death was associated with a 37% lower odds of cerebral atherosclerosis, compared with no statin use prior to death (odds ratio, 0.63; 95% CI, 0.50-0.79; P < .001).

In a mediation analysis, both a direct (OR, 0.73; 95% CI, 0.54-0.93; P = .008) and an indirect (OR, 0.92; 95% CI, 0.88-0.97; P = .002) pathway via less severe cerebrovascular disease linked statins to parkinsonism, indicating that cerebral atherosclerosis mediated 17% of the association between statins and parkinsonism.

In line with other studies, there was no association between statins and other neurodegenerative pathologies, including Parkinson’s disease pathology. However, even older adults with a clinical diagnosis of Parkinson’s disease often show mixed brain pathologies, including cerebrovascular disease pathologies.

“Therefore, we think that statins may be beneficial against parkinsonism in patients with Parkinson’s disease, dependent on how much cerebrovascular disease pathologies they have, including atherosclerosis,” said study investigator Shahram Oveisgharan, MD, with Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago.

However, since the results stem from an observational study, “we do not yet recommend using statins in large scale for older adults at risk for parkinsonism,” Dr. Oveisgharan said.
 

A mixed picture

Reached for comment, Shaheen Lakhan, MD, neurologist in Newton, Massachusetts, noted that since statins were first discovered in the fermented broth of a common soil fungus in the late 1970s, they have proven to reduce cholesterol, heart disease, and stroke.

“The jury is out, however, on [their] effects on diseases such as dementia, autoimmune/inflammatory conditions, bacterial/viral infections, cancer, and parkinsonism,” he said.

“Also, the question often remains whether any benefit gained from statins is from cholesterol-lowering or through another mechanism. When there is such a mixed picture, it generally means that the drug has an effect, but not for everyone,” Dr. Lakhan said. “Much work must now be done to stratify for which patients are statins effective, ineffective, or even harmful in these conditions,” he added.

The study was supported by the National Institutes of Health. Dr. Oveisgharan and Dr. Lakhan have disclosed no relevant financial relationships.

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

Issue
Neurology reviews- 30(5)
Publications
Topics
Sections

Statins may protect against age-related parkinsonism, new research suggests. An observational study showed older adults taking statins had a lower risk for parkinsonism than their counterparts not taking statins – an effect that may be partially mediated by less severe intracranial atherosclerosis in statin users.

“These findings further support the idea that cerebrovascular disease pathologies accumulating in older brains may be an unrecognized contributor to the common occurrence of parkinsonism in old age,” the investigators wrote. “More importantly, these findings suggest that statins may have a potential therapeutic role in decreasing the magnitude of parkinsonism in older adults,” they added.

The study was published online in Neurology.
 

No clinical recommendations ... yet

The findings are based on 2,841 older adults enrolled in one of three ongoing clinical pathological studies at Rush Alzheimer’s Disease Center, Chicago.

Participants’ average age at baseline was 76 years, and 75% were women. None had parkinsonism at the start of the study. One-third of participants (n = 936) were taking statins. During an average follow-up of 6 years, 1,432 (50%) participants developed parkinsonism.

After controlling for demographics, vascular risk factors, and diseases, use of a statin at baseline was associated with a 16% lower risk for parkinsonism (hazard ratio, 0.84; 95% confidence interval, 0.74-0.96; P = .008). Compared with low-intensity statin therapy, moderate- or high-intensity statin therapy was associated with a 7% lower risk for parkinsonism (HR, 0.93; 95% CI, 0.87-1.00; P = .043).

The researchers also examined the brains of 1,044 people who died during the study at a mean age of 89 years. They found statin use prior to death was associated with a 37% lower odds of cerebral atherosclerosis, compared with no statin use prior to death (odds ratio, 0.63; 95% CI, 0.50-0.79; P < .001).

In a mediation analysis, both a direct (OR, 0.73; 95% CI, 0.54-0.93; P = .008) and an indirect (OR, 0.92; 95% CI, 0.88-0.97; P = .002) pathway via less severe cerebrovascular disease linked statins to parkinsonism, indicating that cerebral atherosclerosis mediated 17% of the association between statins and parkinsonism.

In line with other studies, there was no association between statins and other neurodegenerative pathologies, including Parkinson’s disease pathology. However, even older adults with a clinical diagnosis of Parkinson’s disease often show mixed brain pathologies, including cerebrovascular disease pathologies.

“Therefore, we think that statins may be beneficial against parkinsonism in patients with Parkinson’s disease, dependent on how much cerebrovascular disease pathologies they have, including atherosclerosis,” said study investigator Shahram Oveisgharan, MD, with Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago.

However, since the results stem from an observational study, “we do not yet recommend using statins in large scale for older adults at risk for parkinsonism,” Dr. Oveisgharan said.
 

A mixed picture

Reached for comment, Shaheen Lakhan, MD, neurologist in Newton, Massachusetts, noted that since statins were first discovered in the fermented broth of a common soil fungus in the late 1970s, they have proven to reduce cholesterol, heart disease, and stroke.

“The jury is out, however, on [their] effects on diseases such as dementia, autoimmune/inflammatory conditions, bacterial/viral infections, cancer, and parkinsonism,” he said.

“Also, the question often remains whether any benefit gained from statins is from cholesterol-lowering or through another mechanism. When there is such a mixed picture, it generally means that the drug has an effect, but not for everyone,” Dr. Lakhan said. “Much work must now be done to stratify for which patients are statins effective, ineffective, or even harmful in these conditions,” he added.

The study was supported by the National Institutes of Health. Dr. Oveisgharan and Dr. Lakhan have disclosed no relevant financial relationships.

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

Statins may protect against age-related parkinsonism, new research suggests. An observational study showed older adults taking statins had a lower risk for parkinsonism than their counterparts not taking statins – an effect that may be partially mediated by less severe intracranial atherosclerosis in statin users.

“These findings further support the idea that cerebrovascular disease pathologies accumulating in older brains may be an unrecognized contributor to the common occurrence of parkinsonism in old age,” the investigators wrote. “More importantly, these findings suggest that statins may have a potential therapeutic role in decreasing the magnitude of parkinsonism in older adults,” they added.

The study was published online in Neurology.
 

No clinical recommendations ... yet

The findings are based on 2,841 older adults enrolled in one of three ongoing clinical pathological studies at Rush Alzheimer’s Disease Center, Chicago.

Participants’ average age at baseline was 76 years, and 75% were women. None had parkinsonism at the start of the study. One-third of participants (n = 936) were taking statins. During an average follow-up of 6 years, 1,432 (50%) participants developed parkinsonism.

After controlling for demographics, vascular risk factors, and diseases, use of a statin at baseline was associated with a 16% lower risk for parkinsonism (hazard ratio, 0.84; 95% confidence interval, 0.74-0.96; P = .008). Compared with low-intensity statin therapy, moderate- or high-intensity statin therapy was associated with a 7% lower risk for parkinsonism (HR, 0.93; 95% CI, 0.87-1.00; P = .043).

The researchers also examined the brains of 1,044 people who died during the study at a mean age of 89 years. They found statin use prior to death was associated with a 37% lower odds of cerebral atherosclerosis, compared with no statin use prior to death (odds ratio, 0.63; 95% CI, 0.50-0.79; P < .001).

In a mediation analysis, both a direct (OR, 0.73; 95% CI, 0.54-0.93; P = .008) and an indirect (OR, 0.92; 95% CI, 0.88-0.97; P = .002) pathway via less severe cerebrovascular disease linked statins to parkinsonism, indicating that cerebral atherosclerosis mediated 17% of the association between statins and parkinsonism.

In line with other studies, there was no association between statins and other neurodegenerative pathologies, including Parkinson’s disease pathology. However, even older adults with a clinical diagnosis of Parkinson’s disease often show mixed brain pathologies, including cerebrovascular disease pathologies.

“Therefore, we think that statins may be beneficial against parkinsonism in patients with Parkinson’s disease, dependent on how much cerebrovascular disease pathologies they have, including atherosclerosis,” said study investigator Shahram Oveisgharan, MD, with Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago.

However, since the results stem from an observational study, “we do not yet recommend using statins in large scale for older adults at risk for parkinsonism,” Dr. Oveisgharan said.
 

A mixed picture

Reached for comment, Shaheen Lakhan, MD, neurologist in Newton, Massachusetts, noted that since statins were first discovered in the fermented broth of a common soil fungus in the late 1970s, they have proven to reduce cholesterol, heart disease, and stroke.

“The jury is out, however, on [their] effects on diseases such as dementia, autoimmune/inflammatory conditions, bacterial/viral infections, cancer, and parkinsonism,” he said.

“Also, the question often remains whether any benefit gained from statins is from cholesterol-lowering or through another mechanism. When there is such a mixed picture, it generally means that the drug has an effect, but not for everyone,” Dr. Lakhan said. “Much work must now be done to stratify for which patients are statins effective, ineffective, or even harmful in these conditions,” he added.

The study was supported by the National Institutes of Health. Dr. Oveisgharan and Dr. Lakhan have disclosed no relevant financial relationships.

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

Issue
Neurology reviews- 30(5)
Issue
Neurology reviews- 30(5)
Publications
Publications
Topics
Article Type
Sections
Citation Override
Publish date: April 13, 2022
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Anticipation key to tackling perioperative anemia

Article Type
Changed
Tue, 04/19/2022 - 11:35

MANCHESTER, ENGLAND – About one-third of patients who are scheduled for major surgery are anemic. This issue is underrecognized and requires the involvement of all health care professionals to work together to optimize care and maximize outcomes, state the first U.K. guidelines for perioperative anemia.

Anemia management may include dietary changes, iron supplementation, blood transfusion, perioperative physiological optimization, delay or review of the surgical plan, medication reviews, and greater intraoperative care.

It is quite clear that patients have a better experience if management covers the whole pathway, said lead author of the guidelines, Scarlett McNally, MD, PhD, East Sussex Healthcare NHS Trust, Eastbourne, England.

It’s much better for the patient “if every individual member of staff knows what’s supposed to happen, not just for their bit, but the whole way along,” she said. “Otherwise things go wrong, and people don’t anticipate things early enough.” 

The new guidelines, to be published in full later this year by the Centre for Perioperative Care, cover emergency and elective surgery for all ages.

It follows the 2021 publication of a guideline for perioperative diabetes management, and a previous document that covered frailty.

Dr. McNally was presenting the new guidelines on perioperative anemia at the British Society for Haematology 62nd Annual Scientific Meeting.

Although perioperative anemia is a “big issue” in clinical management, “some health care professionals know a lot about one area,” but tend to work in “silos,” Dr. McNally said.

The result is clinicians believe that all other areas are “complex” and opaque, and they “don’t make the simple decisions” that could have a big impact on patient care.

As an example, she said there are already some excellent guidelines out there, but they are not widely read.

One example of a comprehensive guideline, Dr. McNally said, is that issued by the British Society of Gastroenterology. This guideline notes that in cases where a man or a postmenopausal woman has anemia of unknown cause, about 30% of those cases end up having a gastrointestinal cause, and so gastroenterologists are happy to have those patients referred to them.

But Dr. McNally said that she personally, as an orthopedic surgeon, wouldn’t have known what to do with such a patient, and may have referred that person back to primary care to be investigated.

The new guidelines contain algorithms to help staff plan care. Without those, she said, “a lot is resting on the preassessment nurses, but they are having to think about everything else.”

The guidance suggests proactive measures to identify and manage anemia. These include testing for anemia while assessing renal function ahead of a CT scan, or asking patients about their nutrition.

For low-risk patients, it may be enough to give general advice about a good diet and exercise to try to get them through the operation.

However, patients who are high risk (defined as likely to lose > 500 mL or > 10% of blood volume during surgery) need to be identified as such early on, so that early measures can be put in place, as well as a senior review of their care plan.

The guidelines also recommend that operating room staff consider tranexamic acid and other bloodless minimization strategies, and that senior staff give clinical input in cases of functional iron deficiency, a marker of ill health.

To maximize postoperative outcomes, it is suggested that staff work with prehabilitation services and mobilize patients, as symptoms allow.

More importantly, they emphasize the need for shared decision-making about potential surgery, ensuring that the patients understand “Benefits, Risks, Alternatives, and what if we do Nothing (BRAN).”

No funding was declared. One study author declared relationships with the National Institute for Health Research and Pfizer.

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

Publications
Topics
Sections

MANCHESTER, ENGLAND – About one-third of patients who are scheduled for major surgery are anemic. This issue is underrecognized and requires the involvement of all health care professionals to work together to optimize care and maximize outcomes, state the first U.K. guidelines for perioperative anemia.

Anemia management may include dietary changes, iron supplementation, blood transfusion, perioperative physiological optimization, delay or review of the surgical plan, medication reviews, and greater intraoperative care.

It is quite clear that patients have a better experience if management covers the whole pathway, said lead author of the guidelines, Scarlett McNally, MD, PhD, East Sussex Healthcare NHS Trust, Eastbourne, England.

It’s much better for the patient “if every individual member of staff knows what’s supposed to happen, not just for their bit, but the whole way along,” she said. “Otherwise things go wrong, and people don’t anticipate things early enough.” 

The new guidelines, to be published in full later this year by the Centre for Perioperative Care, cover emergency and elective surgery for all ages.

It follows the 2021 publication of a guideline for perioperative diabetes management, and a previous document that covered frailty.

Dr. McNally was presenting the new guidelines on perioperative anemia at the British Society for Haematology 62nd Annual Scientific Meeting.

Although perioperative anemia is a “big issue” in clinical management, “some health care professionals know a lot about one area,” but tend to work in “silos,” Dr. McNally said.

The result is clinicians believe that all other areas are “complex” and opaque, and they “don’t make the simple decisions” that could have a big impact on patient care.

As an example, she said there are already some excellent guidelines out there, but they are not widely read.

One example of a comprehensive guideline, Dr. McNally said, is that issued by the British Society of Gastroenterology. This guideline notes that in cases where a man or a postmenopausal woman has anemia of unknown cause, about 30% of those cases end up having a gastrointestinal cause, and so gastroenterologists are happy to have those patients referred to them.

But Dr. McNally said that she personally, as an orthopedic surgeon, wouldn’t have known what to do with such a patient, and may have referred that person back to primary care to be investigated.

The new guidelines contain algorithms to help staff plan care. Without those, she said, “a lot is resting on the preassessment nurses, but they are having to think about everything else.”

The guidance suggests proactive measures to identify and manage anemia. These include testing for anemia while assessing renal function ahead of a CT scan, or asking patients about their nutrition.

For low-risk patients, it may be enough to give general advice about a good diet and exercise to try to get them through the operation.

However, patients who are high risk (defined as likely to lose > 500 mL or > 10% of blood volume during surgery) need to be identified as such early on, so that early measures can be put in place, as well as a senior review of their care plan.

The guidelines also recommend that operating room staff consider tranexamic acid and other bloodless minimization strategies, and that senior staff give clinical input in cases of functional iron deficiency, a marker of ill health.

To maximize postoperative outcomes, it is suggested that staff work with prehabilitation services and mobilize patients, as symptoms allow.

More importantly, they emphasize the need for shared decision-making about potential surgery, ensuring that the patients understand “Benefits, Risks, Alternatives, and what if we do Nothing (BRAN).”

No funding was declared. One study author declared relationships with the National Institute for Health Research and Pfizer.

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

MANCHESTER, ENGLAND – About one-third of patients who are scheduled for major surgery are anemic. This issue is underrecognized and requires the involvement of all health care professionals to work together to optimize care and maximize outcomes, state the first U.K. guidelines for perioperative anemia.

Anemia management may include dietary changes, iron supplementation, blood transfusion, perioperative physiological optimization, delay or review of the surgical plan, medication reviews, and greater intraoperative care.

It is quite clear that patients have a better experience if management covers the whole pathway, said lead author of the guidelines, Scarlett McNally, MD, PhD, East Sussex Healthcare NHS Trust, Eastbourne, England.

It’s much better for the patient “if every individual member of staff knows what’s supposed to happen, not just for their bit, but the whole way along,” she said. “Otherwise things go wrong, and people don’t anticipate things early enough.” 

The new guidelines, to be published in full later this year by the Centre for Perioperative Care, cover emergency and elective surgery for all ages.

It follows the 2021 publication of a guideline for perioperative diabetes management, and a previous document that covered frailty.

Dr. McNally was presenting the new guidelines on perioperative anemia at the British Society for Haematology 62nd Annual Scientific Meeting.

Although perioperative anemia is a “big issue” in clinical management, “some health care professionals know a lot about one area,” but tend to work in “silos,” Dr. McNally said.

The result is clinicians believe that all other areas are “complex” and opaque, and they “don’t make the simple decisions” that could have a big impact on patient care.

As an example, she said there are already some excellent guidelines out there, but they are not widely read.

One example of a comprehensive guideline, Dr. McNally said, is that issued by the British Society of Gastroenterology. This guideline notes that in cases where a man or a postmenopausal woman has anemia of unknown cause, about 30% of those cases end up having a gastrointestinal cause, and so gastroenterologists are happy to have those patients referred to them.

But Dr. McNally said that she personally, as an orthopedic surgeon, wouldn’t have known what to do with such a patient, and may have referred that person back to primary care to be investigated.

The new guidelines contain algorithms to help staff plan care. Without those, she said, “a lot is resting on the preassessment nurses, but they are having to think about everything else.”

The guidance suggests proactive measures to identify and manage anemia. These include testing for anemia while assessing renal function ahead of a CT scan, or asking patients about their nutrition.

For low-risk patients, it may be enough to give general advice about a good diet and exercise to try to get them through the operation.

However, patients who are high risk (defined as likely to lose > 500 mL or > 10% of blood volume during surgery) need to be identified as such early on, so that early measures can be put in place, as well as a senior review of their care plan.

The guidelines also recommend that operating room staff consider tranexamic acid and other bloodless minimization strategies, and that senior staff give clinical input in cases of functional iron deficiency, a marker of ill health.

To maximize postoperative outcomes, it is suggested that staff work with prehabilitation services and mobilize patients, as symptoms allow.

More importantly, they emphasize the need for shared decision-making about potential surgery, ensuring that the patients understand “Benefits, Risks, Alternatives, and what if we do Nothing (BRAN).”

No funding was declared. One study author declared relationships with the National Institute for Health Research and Pfizer.

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

Publications
Publications
Topics
Article Type
Sections
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Psilocybin ‘rewires’ the brain to alleviate depression

Article Type
Changed
Fri, 04/15/2022 - 08:42

New research points to a general mechanism that may explain how psychedelics act on the brain to alleviate depression and potentially other psychiatric conditions marked by fixed patterns of thinking, including rumination and excessive self-focus.

Led by investigators from the University of California, San Francisco, and Imperial College London’s Centre for Psychedelic Research, the findings come from a new analysis of brain scans of almost 60 patients with resistant depression treated with psilocybin.

Thomas Angus/Imperial College London
Dr. Robin Carhart-Harris

“Not much is known about the changes in brain function after psychedelic experience. There has been much more research done on the acute brain action of psychedelics, but there is very little on the postacute or subacute changes in brain function,” study investigator Robin Carhart-Harris, PhD, former head of the Imperial Centre for Psychedelic Research and now director of the Neuroscape psychedelics division at UCSF, and senior author of the study, told this news organization.

“This research is a major advance because it is showing replication across two datasets with different designs. One in which the scanning is done 1 day after intervention and the other one when the posttreatment scanning is done 3 weeks after the second of two psilocybin therapy sessions,” Dr. Carhart-Harris added.

The study was published online in Nature Medicine.
 

A disruptor?

Psilocybin is one of a number of psychedelics under investigation as a potential therapy for psychiatric disorders. In the last 15 years, at least six separate clinical trials have reported impressive improvements in depressive symptoms with psilocybin therapy. Several studies have tested a synthesized a form of the drug to treat patients with depression and anxiety – with promising results.

However, the therapeutic action of psilocybin and other serotonergic psychedelics is still not completely understood, although it is known that they affect 5-HT2A receptors and are hypothesized to briefly disrupt these connections, allowing them to reform in new ways in the days and weeks following treatment.

This research assessed the subacute impact of psilocybin on brain function in two clinical trials of depression:

The first trial was an open-label trial of oral psilocybin in patients with treatment-resistant depression.

Patients had baseline clinical assessment and resting-state functional MRI, followed by fixed-order “low” (10 mg) and “high” (25 mg) psilocybin therapy dosing days separated by 1 week. Of the 19 patients recruited, 3 were excluded as a result of excessive fMRI head motion. The team confirmed an antidepressant effect of psilocybin in 16 patients via reduced questionnaire scores from baseline.

Brain network modularity was significantly reduced 1 day after psilocybin therapy in 10 of 16 participants (mean difference, –0.29; t15, 2.87; 95% confidence interval, 0.07-0.50; P = .012; d = 0.72). This result implies an increase in functional connectivity between the brain’s main intrinsic networks. 

Pre- vs posttreatment change in modularity significantly correlated with change in Beck Depression Inventory (BDI) score at 6 months, relative to baseline (r14 = 0.54, 95% CI, 0.14-0.78, P = .033). Results imply that decreased brain modularity 1 day after psilocybin therapy relates to long-term improvements in symptom severity.
 

 

 

Effective antidepressant alternative?

The second trial was a double-blind, phase 2, randomized, controlled trial comparing psilocybin with escitalopram (Lexapro). Twenty-one patients were included in the escitalopram imaging sample and 22 patients were included in the psilocybin imaging sample. 

Patients received either 2 x 25 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily placebo (psilocybin arm) or 2 x 1 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily escitalopram (10-20 mg) (escitalopram arm). Functional MRI was recorded at baseline and 3 weeks after the second psilocybin dose.

On average, BDI-measured reductions in depressive symptom severity were significantly greater under psilocybin than escitalopram, indicating superior efficacy of psilocybin therapy versus escitalopram.

Evidence indicated that the reduction in network modularity and its relationship to depression severity was specific to the psilocybin group. In the escitalopram group, network modularity did not change from baseline and there was no significant correlation between changes in modularity and changes in BDI scores. 

Post–psilocybin therapy changes in network flexibility were correlated with changes in BDI score. After false discovery rate correction, increased executive network dynamic flexibility strongly correlated with greater symptom improvement at the 6-week primary endpoint for the psilocybin arm (r20, –0.76, 95% CI, −0.90 to –0.50, P = .001).

There were no significant correlations between changes in BDI scores and changes in dynamic flexibility in the escitalopram arm.

Imperial Centre for Psychedelic Research
Dr. David Nutt

“These findings are important because for the first time we find that psilocybin works differently from conventional antidepressants, making the brain more flexible and fluid and less entrenched in the negative thinking patterns associated with depression. This supports our initial predictions and confirms psilocybin could be a real alternative approach to depression treatments,” study investigator David Nutt, DM, head of the Imperial Centre for Psychedelic Research, London, said in a release.

“In previous studies we had seen a similar effect in the brain when people were scanned whilst on a psychedelic, but here we’re seeing it weeks after treatment for depression, which suggests a carryover of the acute drug action,” said Dr. Carhart-Harris.
 

Durable effect?

“We don’t yet know how long the changes in brain activity seen with psilocybin therapy last, and we need to do more research to understand this,” said Dr. Carhart-Harris, who is a member of the UCSF Weill Institute for Neurosciences. “If the changes don’t last, then is it related to relapse into a depressive episode? We need to do follow-up scans to see where people’s brains are at 3 months or even 6 months after treatment.

“We do know that some people relapse, and it may be that after a while their brains revert to the rigid patterns of activity we see in depression.

“One exciting implication of our findings is that we have discovered a fundamental mechanism via which psychedelic therapy works not just for depression but other mental illnesses, such as anorexia or addiction. We now need to test if this is the case, and if it is, then we have found something important,” added Dr. Carhart-Harris.

Successful phase 3, double-blind randomized, controlled trials will be required to achieve licensing for psilocybin therapy, but pragmatic trials may better address questions regarding treatment practicability, specificity, and optimization. Given the emerging research into psychedelic therapy, it is important for large-scale trials to establish the generalizability, reliability, and specificity of the drug’s antidepressant response.

So how close are we to full federal approval for psilocybin in the treatment of depression? Dr. Carhart-Harris estimated that within 4-5 years is realistic at the federal level. At the state level, in Oregon psilocybin therapy is on track for approval in 2023, including for patients currently undergoing treatment for depressive disorders. In addition, things are opening up in Canada, with some special-access opportunities.

The researchers cautioned that, while these findings are encouraging, trials assessing psilocybin for depression have taken place under controlled, clinical conditions, using a regulated dose formulated in a laboratory, and involved extensive psychological support by a mental health professional – before, during, and after dosing. Taking psychedelics in the absence of these combined safeguards may not have a positive outcome.

The research was supported by funding from the Alex Mosley Charitable Trust and founding donors of the Imperial Centre for Psychedelic Research. One coauthor was supported by the Imperial College London EPSRC Centre London for doctoral training in neurotechnology.

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

Publications
Topics
Sections

New research points to a general mechanism that may explain how psychedelics act on the brain to alleviate depression and potentially other psychiatric conditions marked by fixed patterns of thinking, including rumination and excessive self-focus.

Led by investigators from the University of California, San Francisco, and Imperial College London’s Centre for Psychedelic Research, the findings come from a new analysis of brain scans of almost 60 patients with resistant depression treated with psilocybin.

Thomas Angus/Imperial College London
Dr. Robin Carhart-Harris

“Not much is known about the changes in brain function after psychedelic experience. There has been much more research done on the acute brain action of psychedelics, but there is very little on the postacute or subacute changes in brain function,” study investigator Robin Carhart-Harris, PhD, former head of the Imperial Centre for Psychedelic Research and now director of the Neuroscape psychedelics division at UCSF, and senior author of the study, told this news organization.

“This research is a major advance because it is showing replication across two datasets with different designs. One in which the scanning is done 1 day after intervention and the other one when the posttreatment scanning is done 3 weeks after the second of two psilocybin therapy sessions,” Dr. Carhart-Harris added.

The study was published online in Nature Medicine.
 

A disruptor?

Psilocybin is one of a number of psychedelics under investigation as a potential therapy for psychiatric disorders. In the last 15 years, at least six separate clinical trials have reported impressive improvements in depressive symptoms with psilocybin therapy. Several studies have tested a synthesized a form of the drug to treat patients with depression and anxiety – with promising results.

However, the therapeutic action of psilocybin and other serotonergic psychedelics is still not completely understood, although it is known that they affect 5-HT2A receptors and are hypothesized to briefly disrupt these connections, allowing them to reform in new ways in the days and weeks following treatment.

This research assessed the subacute impact of psilocybin on brain function in two clinical trials of depression:

The first trial was an open-label trial of oral psilocybin in patients with treatment-resistant depression.

Patients had baseline clinical assessment and resting-state functional MRI, followed by fixed-order “low” (10 mg) and “high” (25 mg) psilocybin therapy dosing days separated by 1 week. Of the 19 patients recruited, 3 were excluded as a result of excessive fMRI head motion. The team confirmed an antidepressant effect of psilocybin in 16 patients via reduced questionnaire scores from baseline.

Brain network modularity was significantly reduced 1 day after psilocybin therapy in 10 of 16 participants (mean difference, –0.29; t15, 2.87; 95% confidence interval, 0.07-0.50; P = .012; d = 0.72). This result implies an increase in functional connectivity between the brain’s main intrinsic networks. 

Pre- vs posttreatment change in modularity significantly correlated with change in Beck Depression Inventory (BDI) score at 6 months, relative to baseline (r14 = 0.54, 95% CI, 0.14-0.78, P = .033). Results imply that decreased brain modularity 1 day after psilocybin therapy relates to long-term improvements in symptom severity.
 

 

 

Effective antidepressant alternative?

The second trial was a double-blind, phase 2, randomized, controlled trial comparing psilocybin with escitalopram (Lexapro). Twenty-one patients were included in the escitalopram imaging sample and 22 patients were included in the psilocybin imaging sample. 

Patients received either 2 x 25 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily placebo (psilocybin arm) or 2 x 1 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily escitalopram (10-20 mg) (escitalopram arm). Functional MRI was recorded at baseline and 3 weeks after the second psilocybin dose.

On average, BDI-measured reductions in depressive symptom severity were significantly greater under psilocybin than escitalopram, indicating superior efficacy of psilocybin therapy versus escitalopram.

Evidence indicated that the reduction in network modularity and its relationship to depression severity was specific to the psilocybin group. In the escitalopram group, network modularity did not change from baseline and there was no significant correlation between changes in modularity and changes in BDI scores. 

Post–psilocybin therapy changes in network flexibility were correlated with changes in BDI score. After false discovery rate correction, increased executive network dynamic flexibility strongly correlated with greater symptom improvement at the 6-week primary endpoint for the psilocybin arm (r20, –0.76, 95% CI, −0.90 to –0.50, P = .001).

There were no significant correlations between changes in BDI scores and changes in dynamic flexibility in the escitalopram arm.

Imperial Centre for Psychedelic Research
Dr. David Nutt

“These findings are important because for the first time we find that psilocybin works differently from conventional antidepressants, making the brain more flexible and fluid and less entrenched in the negative thinking patterns associated with depression. This supports our initial predictions and confirms psilocybin could be a real alternative approach to depression treatments,” study investigator David Nutt, DM, head of the Imperial Centre for Psychedelic Research, London, said in a release.

“In previous studies we had seen a similar effect in the brain when people were scanned whilst on a psychedelic, but here we’re seeing it weeks after treatment for depression, which suggests a carryover of the acute drug action,” said Dr. Carhart-Harris.
 

Durable effect?

“We don’t yet know how long the changes in brain activity seen with psilocybin therapy last, and we need to do more research to understand this,” said Dr. Carhart-Harris, who is a member of the UCSF Weill Institute for Neurosciences. “If the changes don’t last, then is it related to relapse into a depressive episode? We need to do follow-up scans to see where people’s brains are at 3 months or even 6 months after treatment.

“We do know that some people relapse, and it may be that after a while their brains revert to the rigid patterns of activity we see in depression.

“One exciting implication of our findings is that we have discovered a fundamental mechanism via which psychedelic therapy works not just for depression but other mental illnesses, such as anorexia or addiction. We now need to test if this is the case, and if it is, then we have found something important,” added Dr. Carhart-Harris.

Successful phase 3, double-blind randomized, controlled trials will be required to achieve licensing for psilocybin therapy, but pragmatic trials may better address questions regarding treatment practicability, specificity, and optimization. Given the emerging research into psychedelic therapy, it is important for large-scale trials to establish the generalizability, reliability, and specificity of the drug’s antidepressant response.

So how close are we to full federal approval for psilocybin in the treatment of depression? Dr. Carhart-Harris estimated that within 4-5 years is realistic at the federal level. At the state level, in Oregon psilocybin therapy is on track for approval in 2023, including for patients currently undergoing treatment for depressive disorders. In addition, things are opening up in Canada, with some special-access opportunities.

The researchers cautioned that, while these findings are encouraging, trials assessing psilocybin for depression have taken place under controlled, clinical conditions, using a regulated dose formulated in a laboratory, and involved extensive psychological support by a mental health professional – before, during, and after dosing. Taking psychedelics in the absence of these combined safeguards may not have a positive outcome.

The research was supported by funding from the Alex Mosley Charitable Trust and founding donors of the Imperial Centre for Psychedelic Research. One coauthor was supported by the Imperial College London EPSRC Centre London for doctoral training in neurotechnology.

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

New research points to a general mechanism that may explain how psychedelics act on the brain to alleviate depression and potentially other psychiatric conditions marked by fixed patterns of thinking, including rumination and excessive self-focus.

Led by investigators from the University of California, San Francisco, and Imperial College London’s Centre for Psychedelic Research, the findings come from a new analysis of brain scans of almost 60 patients with resistant depression treated with psilocybin.

Thomas Angus/Imperial College London
Dr. Robin Carhart-Harris

“Not much is known about the changes in brain function after psychedelic experience. There has been much more research done on the acute brain action of psychedelics, but there is very little on the postacute or subacute changes in brain function,” study investigator Robin Carhart-Harris, PhD, former head of the Imperial Centre for Psychedelic Research and now director of the Neuroscape psychedelics division at UCSF, and senior author of the study, told this news organization.

“This research is a major advance because it is showing replication across two datasets with different designs. One in which the scanning is done 1 day after intervention and the other one when the posttreatment scanning is done 3 weeks after the second of two psilocybin therapy sessions,” Dr. Carhart-Harris added.

The study was published online in Nature Medicine.
 

A disruptor?

Psilocybin is one of a number of psychedelics under investigation as a potential therapy for psychiatric disorders. In the last 15 years, at least six separate clinical trials have reported impressive improvements in depressive symptoms with psilocybin therapy. Several studies have tested a synthesized a form of the drug to treat patients with depression and anxiety – with promising results.

However, the therapeutic action of psilocybin and other serotonergic psychedelics is still not completely understood, although it is known that they affect 5-HT2A receptors and are hypothesized to briefly disrupt these connections, allowing them to reform in new ways in the days and weeks following treatment.

This research assessed the subacute impact of psilocybin on brain function in two clinical trials of depression:

The first trial was an open-label trial of oral psilocybin in patients with treatment-resistant depression.

Patients had baseline clinical assessment and resting-state functional MRI, followed by fixed-order “low” (10 mg) and “high” (25 mg) psilocybin therapy dosing days separated by 1 week. Of the 19 patients recruited, 3 were excluded as a result of excessive fMRI head motion. The team confirmed an antidepressant effect of psilocybin in 16 patients via reduced questionnaire scores from baseline.

Brain network modularity was significantly reduced 1 day after psilocybin therapy in 10 of 16 participants (mean difference, –0.29; t15, 2.87; 95% confidence interval, 0.07-0.50; P = .012; d = 0.72). This result implies an increase in functional connectivity between the brain’s main intrinsic networks. 

Pre- vs posttreatment change in modularity significantly correlated with change in Beck Depression Inventory (BDI) score at 6 months, relative to baseline (r14 = 0.54, 95% CI, 0.14-0.78, P = .033). Results imply that decreased brain modularity 1 day after psilocybin therapy relates to long-term improvements in symptom severity.
 

 

 

Effective antidepressant alternative?

The second trial was a double-blind, phase 2, randomized, controlled trial comparing psilocybin with escitalopram (Lexapro). Twenty-one patients were included in the escitalopram imaging sample and 22 patients were included in the psilocybin imaging sample. 

Patients received either 2 x 25 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily placebo (psilocybin arm) or 2 x 1 mg oral psilocybin, 3 weeks apart, plus 6 weeks of daily escitalopram (10-20 mg) (escitalopram arm). Functional MRI was recorded at baseline and 3 weeks after the second psilocybin dose.

On average, BDI-measured reductions in depressive symptom severity were significantly greater under psilocybin than escitalopram, indicating superior efficacy of psilocybin therapy versus escitalopram.

Evidence indicated that the reduction in network modularity and its relationship to depression severity was specific to the psilocybin group. In the escitalopram group, network modularity did not change from baseline and there was no significant correlation between changes in modularity and changes in BDI scores. 

Post–psilocybin therapy changes in network flexibility were correlated with changes in BDI score. After false discovery rate correction, increased executive network dynamic flexibility strongly correlated with greater symptom improvement at the 6-week primary endpoint for the psilocybin arm (r20, –0.76, 95% CI, −0.90 to –0.50, P = .001).

There were no significant correlations between changes in BDI scores and changes in dynamic flexibility in the escitalopram arm.

Imperial Centre for Psychedelic Research
Dr. David Nutt

“These findings are important because for the first time we find that psilocybin works differently from conventional antidepressants, making the brain more flexible and fluid and less entrenched in the negative thinking patterns associated with depression. This supports our initial predictions and confirms psilocybin could be a real alternative approach to depression treatments,” study investigator David Nutt, DM, head of the Imperial Centre for Psychedelic Research, London, said in a release.

“In previous studies we had seen a similar effect in the brain when people were scanned whilst on a psychedelic, but here we’re seeing it weeks after treatment for depression, which suggests a carryover of the acute drug action,” said Dr. Carhart-Harris.
 

Durable effect?

“We don’t yet know how long the changes in brain activity seen with psilocybin therapy last, and we need to do more research to understand this,” said Dr. Carhart-Harris, who is a member of the UCSF Weill Institute for Neurosciences. “If the changes don’t last, then is it related to relapse into a depressive episode? We need to do follow-up scans to see where people’s brains are at 3 months or even 6 months after treatment.

“We do know that some people relapse, and it may be that after a while their brains revert to the rigid patterns of activity we see in depression.

“One exciting implication of our findings is that we have discovered a fundamental mechanism via which psychedelic therapy works not just for depression but other mental illnesses, such as anorexia or addiction. We now need to test if this is the case, and if it is, then we have found something important,” added Dr. Carhart-Harris.

Successful phase 3, double-blind randomized, controlled trials will be required to achieve licensing for psilocybin therapy, but pragmatic trials may better address questions regarding treatment practicability, specificity, and optimization. Given the emerging research into psychedelic therapy, it is important for large-scale trials to establish the generalizability, reliability, and specificity of the drug’s antidepressant response.

So how close are we to full federal approval for psilocybin in the treatment of depression? Dr. Carhart-Harris estimated that within 4-5 years is realistic at the federal level. At the state level, in Oregon psilocybin therapy is on track for approval in 2023, including for patients currently undergoing treatment for depressive disorders. In addition, things are opening up in Canada, with some special-access opportunities.

The researchers cautioned that, while these findings are encouraging, trials assessing psilocybin for depression have taken place under controlled, clinical conditions, using a regulated dose formulated in a laboratory, and involved extensive psychological support by a mental health professional – before, during, and after dosing. Taking psychedelics in the absence of these combined safeguards may not have a positive outcome.

The research was supported by funding from the Alex Mosley Charitable Trust and founding donors of the Imperial Centre for Psychedelic Research. One coauthor was supported by the Imperial College London EPSRC Centre London for doctoral training in neurotechnology.

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

Publications
Publications
Topics
Article Type
Sections
Article Source

FROM NATURE MEDICINE

Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Erectile dysfunction drugs linked to ocular conditions

Article Type
Changed
Wed, 04/13/2022 - 13:11

People who use phosphodiesterase type 5 inhibitors (PDE5Is), a class of medications most often prescribed for erectile dysfunction, may run an increased risk of vision-threatening ocular conditions, researchers say.

Patients in an insurance database who were prescribed sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), or avanafil (Stendra) were almost twice as likely as were patients not prescribed the drugs to have ischemic optic neuropathy, retinal vascular occlusion, or serous retinal detachment.

In 2020, physicians wrote about 20 million monthly prescriptions for PDE5Is in the United States alone, said Mahyar Etminan, PharmD, associate professor of ophthalmology at the University of British Columbia, Vancouver.

“We don’t want to alarm people taking them, but generally speaking, if they experience visual problems or changes in vision, then these drugs may be the culprits, and they should check it out,” he said in an interview.

The study was published in JAMA Ophthalmology.

Previous reports, including postmarketing studies by the drug makers, have documented ocular events. The monographs for sildenafil, tadalafil, vardenafil, and avanafil warn users about ischemic optic neuropathy, the researchers found.

The monographs for sildenafil, tadalafil, and vardenafil list retinal vascular occlusion as a potential adverse event but do not quantify the risk. None of the drug monographs mention serous retinal detachment.

Previous research has associated PDE5Is with compromised perfusion of the optic nerve. Some researchers have speculated that the choroid blood vessels can undergo smooth muscle relaxation through a cyclic guanosine monophosphate pathway that can lead to choroidal congestion.

To get a better handle on the ocular risks of PDE51s, Dr. Etminan and his colleagues analyzed health insurance claim records from the PharMetrics Plus database of 213,033 men who had not experienced any of the three ocular conditions in the year before they became regular users of the medications.

They identified 1,146 patients who had been diagnosed with at least one of the three conditions.

The overall number of conditions diagnosed was small relative to the size of the population, 15.5 cases per 10,000 person-years. “So that’s still relatively rare, but the problem is that these are very heavily used medications,” Dr. Etminan said.

For each man diagnosed with one of the ocular conditions, the researchers matched four control persons who were the same age and could be followed for the same length of time. There was a total of 4,584 control persons.

The researchers compared regular users of PDE5Is (those who had received at least one prescription for a PDE5I every 3 months in the year before the ocular diagnosis) with nonusers (those who had not received a PDE5I prescription during that time).

Patients with the ocular conditions were more likely than were those in the control group to have hypertension, diabetes, cardiovascular disease, or sleep apnea. After controlling for these covariates, the researchers found that the users were overall 85% more likely to be diagnosed with one or more of them (incidence rate ratio [IRR], 1.85).



The researchers also found that the risk was even greater for those patients who were given five or more prescriptions of PDE5Is, compared to those given fewer than five prescriptions, suggesting a dose response.

On the basis of these findings, Dr. Etminan thinks drug companies should add warnings about serous retinal detachment and retinal vascular occlusion to the drug monographs.

Asked to comment, Pfizer, which developed Viagra, referred questions to its spinoff company, Viatris, which did not respond. Eli Lilly, which makes Cialis, also did not respond to a request for comment. Vivus, which makes Stendra, could not be reached by press time.

Bayer, which makes Levitra, declined to provide anyone who could answer questions, but it provided a statement noting that the occurrence of ocular adverse events is already known among PDE5I users and that retinal vascular occlusion and ischemic optic neuropathy are mentioned in the product information.

“For example, non-arteritic anterior ischemic optic neuropathy (NAION) is a very rare condition which occurs with an overall higher risk in the population usually suffering from erectile dysfunction (ED) – that is, elderly men with concomitant diseases such as diabetes, dyslipidemia, and hypertension – compared to the general population,” the statement said.

Because of the retrospective nature of the analysis, Dr. Etminan acknowledged that researchers could not prove that the increased risk of ocular disease was associated with use of the drugs rather than some underlying condition. But in addition to adjusting for known risk factors, they also separately analyzed men without hypertension, diabetes, or coronary artery disease and still found that the risk of the ocular conditions was roughly double for men with PDE5I prescriptions.

Howard Pomeranz, MD, PhD, professor of ophthalmology at Northwell Health in Great Neck, N.Y., who was not involved in this study, said its findings confirmed similar research that he conducted on ischemic optic neuropathy.

He told this news organization that people taking PDE5Is should weigh the risk against the benefit, but added that the calculation might be different for people who use them to treat pulmonary hypertension rather than erectile dysfunction.

Although people taking the drugs should discuss any changes in their vision with their practitioners, he said they should not be concerned about a “bluish type of tint to the vision that may occur transiently for anywhere from a few minutes up to 40 or 45 minutes.”

Drug companies and regulators should consider changing the monographs in light of this new evidence, Dr. Pomeranz said. “Perhaps this data might drive the warning to be perhaps a little bit stronger, now that there’s more data to suggest maybe a bit of a stronger association and not just some chance association between using these drugs and these visual events.”

The study was funded by the University of British Columbia. Dr. Etminan and Dr. Pomeranz have disclosed no relevant financial interests.

A version of this article first appeared on Medscape.com

Publications
Topics
Sections

People who use phosphodiesterase type 5 inhibitors (PDE5Is), a class of medications most often prescribed for erectile dysfunction, may run an increased risk of vision-threatening ocular conditions, researchers say.

Patients in an insurance database who were prescribed sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), or avanafil (Stendra) were almost twice as likely as were patients not prescribed the drugs to have ischemic optic neuropathy, retinal vascular occlusion, or serous retinal detachment.

In 2020, physicians wrote about 20 million monthly prescriptions for PDE5Is in the United States alone, said Mahyar Etminan, PharmD, associate professor of ophthalmology at the University of British Columbia, Vancouver.

“We don’t want to alarm people taking them, but generally speaking, if they experience visual problems or changes in vision, then these drugs may be the culprits, and they should check it out,” he said in an interview.

The study was published in JAMA Ophthalmology.

Previous reports, including postmarketing studies by the drug makers, have documented ocular events. The monographs for sildenafil, tadalafil, vardenafil, and avanafil warn users about ischemic optic neuropathy, the researchers found.

The monographs for sildenafil, tadalafil, and vardenafil list retinal vascular occlusion as a potential adverse event but do not quantify the risk. None of the drug monographs mention serous retinal detachment.

Previous research has associated PDE5Is with compromised perfusion of the optic nerve. Some researchers have speculated that the choroid blood vessels can undergo smooth muscle relaxation through a cyclic guanosine monophosphate pathway that can lead to choroidal congestion.

To get a better handle on the ocular risks of PDE51s, Dr. Etminan and his colleagues analyzed health insurance claim records from the PharMetrics Plus database of 213,033 men who had not experienced any of the three ocular conditions in the year before they became regular users of the medications.

They identified 1,146 patients who had been diagnosed with at least one of the three conditions.

The overall number of conditions diagnosed was small relative to the size of the population, 15.5 cases per 10,000 person-years. “So that’s still relatively rare, but the problem is that these are very heavily used medications,” Dr. Etminan said.

For each man diagnosed with one of the ocular conditions, the researchers matched four control persons who were the same age and could be followed for the same length of time. There was a total of 4,584 control persons.

The researchers compared regular users of PDE5Is (those who had received at least one prescription for a PDE5I every 3 months in the year before the ocular diagnosis) with nonusers (those who had not received a PDE5I prescription during that time).

Patients with the ocular conditions were more likely than were those in the control group to have hypertension, diabetes, cardiovascular disease, or sleep apnea. After controlling for these covariates, the researchers found that the users were overall 85% more likely to be diagnosed with one or more of them (incidence rate ratio [IRR], 1.85).



The researchers also found that the risk was even greater for those patients who were given five or more prescriptions of PDE5Is, compared to those given fewer than five prescriptions, suggesting a dose response.

On the basis of these findings, Dr. Etminan thinks drug companies should add warnings about serous retinal detachment and retinal vascular occlusion to the drug monographs.

Asked to comment, Pfizer, which developed Viagra, referred questions to its spinoff company, Viatris, which did not respond. Eli Lilly, which makes Cialis, also did not respond to a request for comment. Vivus, which makes Stendra, could not be reached by press time.

Bayer, which makes Levitra, declined to provide anyone who could answer questions, but it provided a statement noting that the occurrence of ocular adverse events is already known among PDE5I users and that retinal vascular occlusion and ischemic optic neuropathy are mentioned in the product information.

“For example, non-arteritic anterior ischemic optic neuropathy (NAION) is a very rare condition which occurs with an overall higher risk in the population usually suffering from erectile dysfunction (ED) – that is, elderly men with concomitant diseases such as diabetes, dyslipidemia, and hypertension – compared to the general population,” the statement said.

Because of the retrospective nature of the analysis, Dr. Etminan acknowledged that researchers could not prove that the increased risk of ocular disease was associated with use of the drugs rather than some underlying condition. But in addition to adjusting for known risk factors, they also separately analyzed men without hypertension, diabetes, or coronary artery disease and still found that the risk of the ocular conditions was roughly double for men with PDE5I prescriptions.

Howard Pomeranz, MD, PhD, professor of ophthalmology at Northwell Health in Great Neck, N.Y., who was not involved in this study, said its findings confirmed similar research that he conducted on ischemic optic neuropathy.

He told this news organization that people taking PDE5Is should weigh the risk against the benefit, but added that the calculation might be different for people who use them to treat pulmonary hypertension rather than erectile dysfunction.

Although people taking the drugs should discuss any changes in their vision with their practitioners, he said they should not be concerned about a “bluish type of tint to the vision that may occur transiently for anywhere from a few minutes up to 40 or 45 minutes.”

Drug companies and regulators should consider changing the monographs in light of this new evidence, Dr. Pomeranz said. “Perhaps this data might drive the warning to be perhaps a little bit stronger, now that there’s more data to suggest maybe a bit of a stronger association and not just some chance association between using these drugs and these visual events.”

The study was funded by the University of British Columbia. Dr. Etminan and Dr. Pomeranz have disclosed no relevant financial interests.

A version of this article first appeared on Medscape.com

People who use phosphodiesterase type 5 inhibitors (PDE5Is), a class of medications most often prescribed for erectile dysfunction, may run an increased risk of vision-threatening ocular conditions, researchers say.

Patients in an insurance database who were prescribed sildenafil (Viagra), tadalafil (Cialis), vardenafil (Levitra), or avanafil (Stendra) were almost twice as likely as were patients not prescribed the drugs to have ischemic optic neuropathy, retinal vascular occlusion, or serous retinal detachment.

In 2020, physicians wrote about 20 million monthly prescriptions for PDE5Is in the United States alone, said Mahyar Etminan, PharmD, associate professor of ophthalmology at the University of British Columbia, Vancouver.

“We don’t want to alarm people taking them, but generally speaking, if they experience visual problems or changes in vision, then these drugs may be the culprits, and they should check it out,” he said in an interview.

The study was published in JAMA Ophthalmology.

Previous reports, including postmarketing studies by the drug makers, have documented ocular events. The monographs for sildenafil, tadalafil, vardenafil, and avanafil warn users about ischemic optic neuropathy, the researchers found.

The monographs for sildenafil, tadalafil, and vardenafil list retinal vascular occlusion as a potential adverse event but do not quantify the risk. None of the drug monographs mention serous retinal detachment.

Previous research has associated PDE5Is with compromised perfusion of the optic nerve. Some researchers have speculated that the choroid blood vessels can undergo smooth muscle relaxation through a cyclic guanosine monophosphate pathway that can lead to choroidal congestion.

To get a better handle on the ocular risks of PDE51s, Dr. Etminan and his colleagues analyzed health insurance claim records from the PharMetrics Plus database of 213,033 men who had not experienced any of the three ocular conditions in the year before they became regular users of the medications.

They identified 1,146 patients who had been diagnosed with at least one of the three conditions.

The overall number of conditions diagnosed was small relative to the size of the population, 15.5 cases per 10,000 person-years. “So that’s still relatively rare, but the problem is that these are very heavily used medications,” Dr. Etminan said.

For each man diagnosed with one of the ocular conditions, the researchers matched four control persons who were the same age and could be followed for the same length of time. There was a total of 4,584 control persons.

The researchers compared regular users of PDE5Is (those who had received at least one prescription for a PDE5I every 3 months in the year before the ocular diagnosis) with nonusers (those who had not received a PDE5I prescription during that time).

Patients with the ocular conditions were more likely than were those in the control group to have hypertension, diabetes, cardiovascular disease, or sleep apnea. After controlling for these covariates, the researchers found that the users were overall 85% more likely to be diagnosed with one or more of them (incidence rate ratio [IRR], 1.85).



The researchers also found that the risk was even greater for those patients who were given five or more prescriptions of PDE5Is, compared to those given fewer than five prescriptions, suggesting a dose response.

On the basis of these findings, Dr. Etminan thinks drug companies should add warnings about serous retinal detachment and retinal vascular occlusion to the drug monographs.

Asked to comment, Pfizer, which developed Viagra, referred questions to its spinoff company, Viatris, which did not respond. Eli Lilly, which makes Cialis, also did not respond to a request for comment. Vivus, which makes Stendra, could not be reached by press time.

Bayer, which makes Levitra, declined to provide anyone who could answer questions, but it provided a statement noting that the occurrence of ocular adverse events is already known among PDE5I users and that retinal vascular occlusion and ischemic optic neuropathy are mentioned in the product information.

“For example, non-arteritic anterior ischemic optic neuropathy (NAION) is a very rare condition which occurs with an overall higher risk in the population usually suffering from erectile dysfunction (ED) – that is, elderly men with concomitant diseases such as diabetes, dyslipidemia, and hypertension – compared to the general population,” the statement said.

Because of the retrospective nature of the analysis, Dr. Etminan acknowledged that researchers could not prove that the increased risk of ocular disease was associated with use of the drugs rather than some underlying condition. But in addition to adjusting for known risk factors, they also separately analyzed men without hypertension, diabetes, or coronary artery disease and still found that the risk of the ocular conditions was roughly double for men with PDE5I prescriptions.

Howard Pomeranz, MD, PhD, professor of ophthalmology at Northwell Health in Great Neck, N.Y., who was not involved in this study, said its findings confirmed similar research that he conducted on ischemic optic neuropathy.

He told this news organization that people taking PDE5Is should weigh the risk against the benefit, but added that the calculation might be different for people who use them to treat pulmonary hypertension rather than erectile dysfunction.

Although people taking the drugs should discuss any changes in their vision with their practitioners, he said they should not be concerned about a “bluish type of tint to the vision that may occur transiently for anywhere from a few minutes up to 40 or 45 minutes.”

Drug companies and regulators should consider changing the monographs in light of this new evidence, Dr. Pomeranz said. “Perhaps this data might drive the warning to be perhaps a little bit stronger, now that there’s more data to suggest maybe a bit of a stronger association and not just some chance association between using these drugs and these visual events.”

The study was funded by the University of British Columbia. Dr. Etminan and Dr. Pomeranz have disclosed no relevant financial interests.

A version of this article first appeared on Medscape.com

Publications
Publications
Topics
Article Type
Sections
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Breakthrough COVID dangerous for vaccinated cancer patients

Article Type
Changed
Thu, 12/15/2022 - 17:22

Vaccinated patients with cancer are more likely than those without cancer to contract a breakthrough COVID-19 infection, which puts them at a much higher risk for hospitalization and death, according to a study published in JAMA Oncology.

The risks were highest among patients who had certain cancers and those who had received cancer treatment within the past year.

“These results emphasize the need for patients with cancer to maintain mitigation practice, especially with the emergence of different virus variants and the waning immunity of vaccines,” the study authors wrote.

Researchers at Case Western Reserve University in Cleveland analyzed electronic health record data for more than 636,000 vaccinated patients, including more than 45,000 vaccinated patients with cancer. They looked for the time trends, risks, and outcomes of breakthrough COVID-19 infections for vaccinated cancer patients in the United States between December 2020 and November 2021.

Overall, the cumulative risk of breakthrough infections in vaccinated cancer patients was 13.6%, with the highest risk for pancreatic (24.7%), liver (22.8%), lung (20.4%), and colorectal (17.5%) cancers and the lowest risk for thyroid (10.3%), endometrial (11.9%), and breast (11.9%) cancers, versus 4.9% in vaccinated patients without cancer.

Patients who had medical encounters for their cancer within the past year had a higher risk for a breakthrough infection, particularly those with breast cancer, blood cancers, colorectal cancer, bladder cancer, and pancreatic cancer.

Among patients with cancer, the overall risk for hospitalization after a breakthrough infection was 31.6%, as compared with 3.9% in those without a breakthrough infection. In addition, the risk of death was 6.7% after a breakthrough infection, as compared with 1.3% in those without a breakthrough infection.

Among patients who didn’t have cancer, the overall hospitalization risk was 25.9% in patients with a breakthrough infection, as compared with 3% in those without a breakthrough infection. The overall risk of death was 2.7% after a breakthrough infection, as compared with 0.5% in those without a breakthrough infection.

In addition, breakthrough infections continuously increased for all patients from December 2020 to November 2021, with the numbers consistently higher among patients with cancer.

“This increasing time trend may reflect waning immunity of vaccines, the emergence of different virus variants, and varied measures taken by individuals and communities over time during the pandemic,” the study authors wrote.

Vaccines are likely less protective against coronavirus infection in cancer patients, and in turn, cancer patients may be more susceptible to COVID-19 infections, the researchers wrote. As breakthrough infections continue to increase for everyone, patients with cancer will face increased risks for severe breakthroughs, hospitalization, and death, they concluded.

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

Publications
Topics
Sections

Vaccinated patients with cancer are more likely than those without cancer to contract a breakthrough COVID-19 infection, which puts them at a much higher risk for hospitalization and death, according to a study published in JAMA Oncology.

The risks were highest among patients who had certain cancers and those who had received cancer treatment within the past year.

“These results emphasize the need for patients with cancer to maintain mitigation practice, especially with the emergence of different virus variants and the waning immunity of vaccines,” the study authors wrote.

Researchers at Case Western Reserve University in Cleveland analyzed electronic health record data for more than 636,000 vaccinated patients, including more than 45,000 vaccinated patients with cancer. They looked for the time trends, risks, and outcomes of breakthrough COVID-19 infections for vaccinated cancer patients in the United States between December 2020 and November 2021.

Overall, the cumulative risk of breakthrough infections in vaccinated cancer patients was 13.6%, with the highest risk for pancreatic (24.7%), liver (22.8%), lung (20.4%), and colorectal (17.5%) cancers and the lowest risk for thyroid (10.3%), endometrial (11.9%), and breast (11.9%) cancers, versus 4.9% in vaccinated patients without cancer.

Patients who had medical encounters for their cancer within the past year had a higher risk for a breakthrough infection, particularly those with breast cancer, blood cancers, colorectal cancer, bladder cancer, and pancreatic cancer.

Among patients with cancer, the overall risk for hospitalization after a breakthrough infection was 31.6%, as compared with 3.9% in those without a breakthrough infection. In addition, the risk of death was 6.7% after a breakthrough infection, as compared with 1.3% in those without a breakthrough infection.

Among patients who didn’t have cancer, the overall hospitalization risk was 25.9% in patients with a breakthrough infection, as compared with 3% in those without a breakthrough infection. The overall risk of death was 2.7% after a breakthrough infection, as compared with 0.5% in those without a breakthrough infection.

In addition, breakthrough infections continuously increased for all patients from December 2020 to November 2021, with the numbers consistently higher among patients with cancer.

“This increasing time trend may reflect waning immunity of vaccines, the emergence of different virus variants, and varied measures taken by individuals and communities over time during the pandemic,” the study authors wrote.

Vaccines are likely less protective against coronavirus infection in cancer patients, and in turn, cancer patients may be more susceptible to COVID-19 infections, the researchers wrote. As breakthrough infections continue to increase for everyone, patients with cancer will face increased risks for severe breakthroughs, hospitalization, and death, they concluded.

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

Vaccinated patients with cancer are more likely than those without cancer to contract a breakthrough COVID-19 infection, which puts them at a much higher risk for hospitalization and death, according to a study published in JAMA Oncology.

The risks were highest among patients who had certain cancers and those who had received cancer treatment within the past year.

“These results emphasize the need for patients with cancer to maintain mitigation practice, especially with the emergence of different virus variants and the waning immunity of vaccines,” the study authors wrote.

Researchers at Case Western Reserve University in Cleveland analyzed electronic health record data for more than 636,000 vaccinated patients, including more than 45,000 vaccinated patients with cancer. They looked for the time trends, risks, and outcomes of breakthrough COVID-19 infections for vaccinated cancer patients in the United States between December 2020 and November 2021.

Overall, the cumulative risk of breakthrough infections in vaccinated cancer patients was 13.6%, with the highest risk for pancreatic (24.7%), liver (22.8%), lung (20.4%), and colorectal (17.5%) cancers and the lowest risk for thyroid (10.3%), endometrial (11.9%), and breast (11.9%) cancers, versus 4.9% in vaccinated patients without cancer.

Patients who had medical encounters for their cancer within the past year had a higher risk for a breakthrough infection, particularly those with breast cancer, blood cancers, colorectal cancer, bladder cancer, and pancreatic cancer.

Among patients with cancer, the overall risk for hospitalization after a breakthrough infection was 31.6%, as compared with 3.9% in those without a breakthrough infection. In addition, the risk of death was 6.7% after a breakthrough infection, as compared with 1.3% in those without a breakthrough infection.

Among patients who didn’t have cancer, the overall hospitalization risk was 25.9% in patients with a breakthrough infection, as compared with 3% in those without a breakthrough infection. The overall risk of death was 2.7% after a breakthrough infection, as compared with 0.5% in those without a breakthrough infection.

In addition, breakthrough infections continuously increased for all patients from December 2020 to November 2021, with the numbers consistently higher among patients with cancer.

“This increasing time trend may reflect waning immunity of vaccines, the emergence of different virus variants, and varied measures taken by individuals and communities over time during the pandemic,” the study authors wrote.

Vaccines are likely less protective against coronavirus infection in cancer patients, and in turn, cancer patients may be more susceptible to COVID-19 infections, the researchers wrote. As breakthrough infections continue to increase for everyone, patients with cancer will face increased risks for severe breakthroughs, hospitalization, and death, they concluded.

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

Publications
Publications
Topics
Article Type
Sections
Article Source

FROM JAMA ONCOLOGY

Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Nontuberculous mycobacterial lung disease can be challenging to treat

Article Type
Changed
Wed, 04/13/2022 - 11:53

Living in coastal areas of Florida and California has great appeal for many, with the warm, sunny climate and nearby fresh water and salt water.

But, unknown to many, those balmy coasts also carry the risk of infection from nontuberculous (atypical) mycobacteria (NTM). Unlike its relative, tuberculosis, NTM is not transmitted from person to person, with one exception: patients with cystic fibrosis.

It is estimated that there were 181,000 people with NTM lung disease in the U.S. in 2015, and according to one study, the incidence is increasing by 8.2% annually among those aged 65 years and older. But NTM doesn’t only affect the elderly; it’s estimated that 31% of all NTM patients are younger than 65 years.

With the warm, moist soil and water, NTM is most commonly found in Florida, California, Hawaii, and the Gulf Coast states. The incidence is somewhat lower in states along the Great Lakes. Other states are not without risk – but NTM is perhaps even more likely to be overlooked in these states by physicians because of a lack of awareness of the disease.

Rebecca Prevots, PhD, MPH, chief of the epidemiology and population studies unit of the Division of Intramural Research at the National Institute of Allergy and Infectious Diseases, told this news organization that “why NTM is increasing is one of the most common questions” she gets, followed by whether it is due to climate change. “The short answer is, we don’t know.”

She suggests that the increase in diagnoses is due to a combination of increased awareness, host susceptibility, and perhaps environmental changes. One problem is that NTM is not a reportable disease. Also, public health resources have been decimated, both through funding cuts and loss of personnel. Dr. Prevots said, “It’s not just NTM surveillance that is important, but you can’t just make a certain condition reportable and expect to have good data without putting resources to it. ... Diseases are made reportable at the state level. There’s no mandated reporting up to CDC. So CDC is piloting reporting events through their emerging infectious program.”

Anthony Cannella, MD, assistant professor of infectious diseases at the University of South Florida (USF), is in the midst of NTM. He told this news organization that “there’s a huge circle with big old dots right over the center of the state.” He is adamant that “a soil-water survey has to occur. We need to know what the devil is happening.”

Florida legislators agreed to allocate $519,000 for NTM testing and surveillance in 2019. But Florida Governor Ron DeSantis vetoed that line item in the budget. WUSF (a National Public Radio affiliate on the USF campus) was unable to get a response to their query about this from the governor’s office.
 

Who gets NTM?

Mycobacterium avium complex primarily causes lung disease, which presents as two clinical syndromes.

“These infections don’t affect everyone,” Kenneth Olivier, MD, MPH, chief of pulmonary clinical medicine, Cardiovascular Pulmonary Branch of the National Heart, Lung, and Blood Institute, said in an interview. They affect “patients that have underlying genetic conditions that cause abnormalities in the airway clearance mechanisms, particularly cystic fibrosis and primary ciliary dyskinesia [and], to some extent, patients with COPD.”

The second group is “comprised mainly of postmenopausal women, many of whom have had no predisposing medical problems prior to onset of generally frequent throat clearing or chronic cough, which is what brings them to medical attention.” Dr. Olivier added that “many of these patients have a fairly unique appearance. They tend to have a high prevalence of curvature of the spine, scoliosis, indentation of the chest wall (pectus excavatum), and physical characteristics that overlap heritable connective tissue disorders like Marfan syndrome or Ehlers-Danlos syndrome.”

Dr. Olivier pointed out a major problem in NTM diagnosis and treatment: “The guidelines-based approach to chronic cough generally calls for treating postnasal drip, airway reactivity, asthma type symptoms first empirically, before doing different diagnostic studies. That generally causes a delay in obtaining things like CT scan, where you can see the characteristic changes.”

Dr. Cannella added, “People are starting to become more aware of it. It’s kind of like pneumocystis back in the 80s. ... We’ve had patients who have had long periods of febrile neutropenia, and NTM wasn’t on the radar. Now we’ve picked up at least seven or eight.”

In addition to pulmonary infections, nosocomial outbreaks have occurred, owing to contaminated heater-cooler units, catheter infections, nail salons, or to medical tourism. These more commonly involve rapidly growing species, such as M abscessus, M chelonae, and M fortuitum. Clinicians should also be aware of skin infections from M marinum, which come from wounds from aquariums, fish, or shellfish. Incubation can occur over months, highlighting the importance of a detailed history and special cultures.
 

 

 

Diagnostics

The diagnosis of NTM is delayed for several reasons. One is the lack of awareness among clinicians about NTM and its risk factors, including hobbies such as gardening or working in places where dirt is aerosolized, such as on road crews, or even from hot tubs. A thorough history is critical.

Another is not recognizing the need for an acid-fast bacilli (AFB) culture, which requires specialized media. Fortunately, NTM can be picked up on fungal cultures, Dr. Cannella noted. Clinicians are sometimes discouraged from culturing AFB because doing so may not be cost-effective. And many hospital laboratories are increasingly sending cultures to outside labs, and it can take days – sometimes even more than a week – to receive a report of results.

Charles Daley, MD, chief of the Division of Mycobacterial and Respiratory Infections at National Jewish Health, expressed his frustration about labs in an interview, saying diagnostics is “an important hole in the U.S., as our laboratories do not provide clinicians with the results that they need to make good decisions. Most laboratories in the U.S. just don’t speciate the organisms or subspeciate in the setting of abscesses. They don’t tell the clinician enough about the susceptibility, particularly whether there’s inducible resistance. As a clinician, you just don’t have the information to make the right decisions. ... We need to improve diagnostics in NTM. Everything is there and available. They just don’t want to do it because it increases the costs.”

Men tend to have fibrocavitary disease, which shows on ordinary chest x-rays, but CT scans are essential for women because women tend to have either nodular disease or bronchiectasis, which does not show on a plain film.
 

Treatment

A standard treatment for NTM lung disease includes three or four medications – clarithromycin or azithromycin, rifampin or rifabutin, ethambutol, and streptomycin or amikacin. In vitro resistance is important in predicting the clinical response to a macrolide or amikacin.

For bronchiectatic disease, National Jewish Hospital recommends treatment three times per week rather than daily therapy, as it is better tolerated. Azithromycin is preferred over clarithromycin. Amikacin should be added if there is cavitary or severe disease, and the macrolide is then given daily.

Dr. Olivier suggested that physicians stagger the initiation of those drugs to improve the tolerability of the difficult regimen. Generally, treatment is for 18 months – a year after sputum cultures become negative.

If therapy fails – that is, sputum is persistently positive at 6 months – amikacin liposomal inhalation solution (Arikayce) is likely to be added. Patients should be monitored with monthly safety labs, sputum cultures, and an audiogram (if receiving amikacin). Every 3 months, vestibular tests, eye exams, and spirometry should be conducted, and every 6 months, physicians should order a CT, an audiogram, and an electrocardiogram.

Despite completing such a rigorous regimen, about half of patients experience reinfection because of their underlying host susceptibility. Genomic sequencing shows that these are new infections, not relapses, Dr. Prevots said. She also noted that gastroesophageal reflux disease is a significant risk factor because of chronic aspiration.

Dr. Daley outlined the newer treatments being studied. They include Arikayce, omadocycline, and bedaquiline. He added, “There’s a neutrophil elastase inhibitor trial that’s ongoing, a huge trial. There’s another one looking at basically eosinophilic inflammation.”

Other trials are in the offing, he said, all focusing on the inflammatory response – a development he described as exciting, because for the longest time, there were few if any NTM trials.

Dr. Cannella is also buoyed by the potential synergy of dual beta-lactam therapy with ceftaroline and a carbapenem for M abscessus infections, which are notoriously difficult to treat.

There are unique problems facing drug development for NTM because, for approval, the U.S. Food and Drug Administration requires the drug to “improve how a patient feels, functions, or survives.” NTM is associated with low mortality, so that “is off the table,” Dr. Daley explained. It’s hard to quantify improvement in function. The top two symptoms to measure are coughing and fatigue, he said. But both are difficult to measure, and some of the medicines worsen cough. Some research groups are now trying to validate patient-reported outcome instruments to satisfy the FDA’s requirements.
 

 

 

Tips for patients and physicians

The experts this news organization spoke to had very consistent recommendations for patients:

  • NTM is resistant to chlorine and bromine, so tap water is a major source of infection. Patients should consider to greater than 130° F and using metal showerheads or bathing rather than showering.
  • Good bathroom ventilation helps.
  • Patients should consider using a water filter that filters entities less than 5 mcm in size – but not carbon filters, which concentrate the organisms.
  • Humidifiers and hot tubs should be avoided.
  • A good face mask, such as an N95, should be worn when gardening or repotting plants.

Dr. Olivier stressed that clinicians should familiarize themselves with the guidelines for diagnosing and treating NTM. In particular, clinicians should be aware that using azithromycin for bronchitis might cause resistance in NTM. “Macrolide resistance turns what may be a slowly progressive or bothersome infection into a lethal infection with a 1-year mortality of 35%.”

He concluded, “I would just urge that if the patient’s on their second or third Z-Pak within a year, it’s probably time to look for other causes of what might be happening.”

Dr. Cannella, Dr. Prevots, and Dr. Olivier reported no relevant financial relationships. Dr. Cannella adds, “My views are not those of my employers, the U.S. Dept of VA, or the University of South Florida Morsani College of Medicine.” Dr. Daley reports research grants/contracts with AN2, Beyond Air, Bugworks, Insmed, and Paratek and service on advisory boards or as a consultant for AN2, AstraZeneca, Genentech, Insmed, Matinas, Paratek, Pfizer, and Spero.

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

Publications
Topics
Sections

Living in coastal areas of Florida and California has great appeal for many, with the warm, sunny climate and nearby fresh water and salt water.

But, unknown to many, those balmy coasts also carry the risk of infection from nontuberculous (atypical) mycobacteria (NTM). Unlike its relative, tuberculosis, NTM is not transmitted from person to person, with one exception: patients with cystic fibrosis.

It is estimated that there were 181,000 people with NTM lung disease in the U.S. in 2015, and according to one study, the incidence is increasing by 8.2% annually among those aged 65 years and older. But NTM doesn’t only affect the elderly; it’s estimated that 31% of all NTM patients are younger than 65 years.

With the warm, moist soil and water, NTM is most commonly found in Florida, California, Hawaii, and the Gulf Coast states. The incidence is somewhat lower in states along the Great Lakes. Other states are not without risk – but NTM is perhaps even more likely to be overlooked in these states by physicians because of a lack of awareness of the disease.

Rebecca Prevots, PhD, MPH, chief of the epidemiology and population studies unit of the Division of Intramural Research at the National Institute of Allergy and Infectious Diseases, told this news organization that “why NTM is increasing is one of the most common questions” she gets, followed by whether it is due to climate change. “The short answer is, we don’t know.”

She suggests that the increase in diagnoses is due to a combination of increased awareness, host susceptibility, and perhaps environmental changes. One problem is that NTM is not a reportable disease. Also, public health resources have been decimated, both through funding cuts and loss of personnel. Dr. Prevots said, “It’s not just NTM surveillance that is important, but you can’t just make a certain condition reportable and expect to have good data without putting resources to it. ... Diseases are made reportable at the state level. There’s no mandated reporting up to CDC. So CDC is piloting reporting events through their emerging infectious program.”

Anthony Cannella, MD, assistant professor of infectious diseases at the University of South Florida (USF), is in the midst of NTM. He told this news organization that “there’s a huge circle with big old dots right over the center of the state.” He is adamant that “a soil-water survey has to occur. We need to know what the devil is happening.”

Florida legislators agreed to allocate $519,000 for NTM testing and surveillance in 2019. But Florida Governor Ron DeSantis vetoed that line item in the budget. WUSF (a National Public Radio affiliate on the USF campus) was unable to get a response to their query about this from the governor’s office.
 

Who gets NTM?

Mycobacterium avium complex primarily causes lung disease, which presents as two clinical syndromes.

“These infections don’t affect everyone,” Kenneth Olivier, MD, MPH, chief of pulmonary clinical medicine, Cardiovascular Pulmonary Branch of the National Heart, Lung, and Blood Institute, said in an interview. They affect “patients that have underlying genetic conditions that cause abnormalities in the airway clearance mechanisms, particularly cystic fibrosis and primary ciliary dyskinesia [and], to some extent, patients with COPD.”

The second group is “comprised mainly of postmenopausal women, many of whom have had no predisposing medical problems prior to onset of generally frequent throat clearing or chronic cough, which is what brings them to medical attention.” Dr. Olivier added that “many of these patients have a fairly unique appearance. They tend to have a high prevalence of curvature of the spine, scoliosis, indentation of the chest wall (pectus excavatum), and physical characteristics that overlap heritable connective tissue disorders like Marfan syndrome or Ehlers-Danlos syndrome.”

Dr. Olivier pointed out a major problem in NTM diagnosis and treatment: “The guidelines-based approach to chronic cough generally calls for treating postnasal drip, airway reactivity, asthma type symptoms first empirically, before doing different diagnostic studies. That generally causes a delay in obtaining things like CT scan, where you can see the characteristic changes.”

Dr. Cannella added, “People are starting to become more aware of it. It’s kind of like pneumocystis back in the 80s. ... We’ve had patients who have had long periods of febrile neutropenia, and NTM wasn’t on the radar. Now we’ve picked up at least seven or eight.”

In addition to pulmonary infections, nosocomial outbreaks have occurred, owing to contaminated heater-cooler units, catheter infections, nail salons, or to medical tourism. These more commonly involve rapidly growing species, such as M abscessus, M chelonae, and M fortuitum. Clinicians should also be aware of skin infections from M marinum, which come from wounds from aquariums, fish, or shellfish. Incubation can occur over months, highlighting the importance of a detailed history and special cultures.
 

 

 

Diagnostics

The diagnosis of NTM is delayed for several reasons. One is the lack of awareness among clinicians about NTM and its risk factors, including hobbies such as gardening or working in places where dirt is aerosolized, such as on road crews, or even from hot tubs. A thorough history is critical.

Another is not recognizing the need for an acid-fast bacilli (AFB) culture, which requires specialized media. Fortunately, NTM can be picked up on fungal cultures, Dr. Cannella noted. Clinicians are sometimes discouraged from culturing AFB because doing so may not be cost-effective. And many hospital laboratories are increasingly sending cultures to outside labs, and it can take days – sometimes even more than a week – to receive a report of results.

Charles Daley, MD, chief of the Division of Mycobacterial and Respiratory Infections at National Jewish Health, expressed his frustration about labs in an interview, saying diagnostics is “an important hole in the U.S., as our laboratories do not provide clinicians with the results that they need to make good decisions. Most laboratories in the U.S. just don’t speciate the organisms or subspeciate in the setting of abscesses. They don’t tell the clinician enough about the susceptibility, particularly whether there’s inducible resistance. As a clinician, you just don’t have the information to make the right decisions. ... We need to improve diagnostics in NTM. Everything is there and available. They just don’t want to do it because it increases the costs.”

Men tend to have fibrocavitary disease, which shows on ordinary chest x-rays, but CT scans are essential for women because women tend to have either nodular disease or bronchiectasis, which does not show on a plain film.
 

Treatment

A standard treatment for NTM lung disease includes three or four medications – clarithromycin or azithromycin, rifampin or rifabutin, ethambutol, and streptomycin or amikacin. In vitro resistance is important in predicting the clinical response to a macrolide or amikacin.

For bronchiectatic disease, National Jewish Hospital recommends treatment three times per week rather than daily therapy, as it is better tolerated. Azithromycin is preferred over clarithromycin. Amikacin should be added if there is cavitary or severe disease, and the macrolide is then given daily.

Dr. Olivier suggested that physicians stagger the initiation of those drugs to improve the tolerability of the difficult regimen. Generally, treatment is for 18 months – a year after sputum cultures become negative.

If therapy fails – that is, sputum is persistently positive at 6 months – amikacin liposomal inhalation solution (Arikayce) is likely to be added. Patients should be monitored with monthly safety labs, sputum cultures, and an audiogram (if receiving amikacin). Every 3 months, vestibular tests, eye exams, and spirometry should be conducted, and every 6 months, physicians should order a CT, an audiogram, and an electrocardiogram.

Despite completing such a rigorous regimen, about half of patients experience reinfection because of their underlying host susceptibility. Genomic sequencing shows that these are new infections, not relapses, Dr. Prevots said. She also noted that gastroesophageal reflux disease is a significant risk factor because of chronic aspiration.

Dr. Daley outlined the newer treatments being studied. They include Arikayce, omadocycline, and bedaquiline. He added, “There’s a neutrophil elastase inhibitor trial that’s ongoing, a huge trial. There’s another one looking at basically eosinophilic inflammation.”

Other trials are in the offing, he said, all focusing on the inflammatory response – a development he described as exciting, because for the longest time, there were few if any NTM trials.

Dr. Cannella is also buoyed by the potential synergy of dual beta-lactam therapy with ceftaroline and a carbapenem for M abscessus infections, which are notoriously difficult to treat.

There are unique problems facing drug development for NTM because, for approval, the U.S. Food and Drug Administration requires the drug to “improve how a patient feels, functions, or survives.” NTM is associated with low mortality, so that “is off the table,” Dr. Daley explained. It’s hard to quantify improvement in function. The top two symptoms to measure are coughing and fatigue, he said. But both are difficult to measure, and some of the medicines worsen cough. Some research groups are now trying to validate patient-reported outcome instruments to satisfy the FDA’s requirements.
 

 

 

Tips for patients and physicians

The experts this news organization spoke to had very consistent recommendations for patients:

  • NTM is resistant to chlorine and bromine, so tap water is a major source of infection. Patients should consider to greater than 130° F and using metal showerheads or bathing rather than showering.
  • Good bathroom ventilation helps.
  • Patients should consider using a water filter that filters entities less than 5 mcm in size – but not carbon filters, which concentrate the organisms.
  • Humidifiers and hot tubs should be avoided.
  • A good face mask, such as an N95, should be worn when gardening or repotting plants.

Dr. Olivier stressed that clinicians should familiarize themselves with the guidelines for diagnosing and treating NTM. In particular, clinicians should be aware that using azithromycin for bronchitis might cause resistance in NTM. “Macrolide resistance turns what may be a slowly progressive or bothersome infection into a lethal infection with a 1-year mortality of 35%.”

He concluded, “I would just urge that if the patient’s on their second or third Z-Pak within a year, it’s probably time to look for other causes of what might be happening.”

Dr. Cannella, Dr. Prevots, and Dr. Olivier reported no relevant financial relationships. Dr. Cannella adds, “My views are not those of my employers, the U.S. Dept of VA, or the University of South Florida Morsani College of Medicine.” Dr. Daley reports research grants/contracts with AN2, Beyond Air, Bugworks, Insmed, and Paratek and service on advisory boards or as a consultant for AN2, AstraZeneca, Genentech, Insmed, Matinas, Paratek, Pfizer, and Spero.

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

Living in coastal areas of Florida and California has great appeal for many, with the warm, sunny climate and nearby fresh water and salt water.

But, unknown to many, those balmy coasts also carry the risk of infection from nontuberculous (atypical) mycobacteria (NTM). Unlike its relative, tuberculosis, NTM is not transmitted from person to person, with one exception: patients with cystic fibrosis.

It is estimated that there were 181,000 people with NTM lung disease in the U.S. in 2015, and according to one study, the incidence is increasing by 8.2% annually among those aged 65 years and older. But NTM doesn’t only affect the elderly; it’s estimated that 31% of all NTM patients are younger than 65 years.

With the warm, moist soil and water, NTM is most commonly found in Florida, California, Hawaii, and the Gulf Coast states. The incidence is somewhat lower in states along the Great Lakes. Other states are not without risk – but NTM is perhaps even more likely to be overlooked in these states by physicians because of a lack of awareness of the disease.

Rebecca Prevots, PhD, MPH, chief of the epidemiology and population studies unit of the Division of Intramural Research at the National Institute of Allergy and Infectious Diseases, told this news organization that “why NTM is increasing is one of the most common questions” she gets, followed by whether it is due to climate change. “The short answer is, we don’t know.”

She suggests that the increase in diagnoses is due to a combination of increased awareness, host susceptibility, and perhaps environmental changes. One problem is that NTM is not a reportable disease. Also, public health resources have been decimated, both through funding cuts and loss of personnel. Dr. Prevots said, “It’s not just NTM surveillance that is important, but you can’t just make a certain condition reportable and expect to have good data without putting resources to it. ... Diseases are made reportable at the state level. There’s no mandated reporting up to CDC. So CDC is piloting reporting events through their emerging infectious program.”

Anthony Cannella, MD, assistant professor of infectious diseases at the University of South Florida (USF), is in the midst of NTM. He told this news organization that “there’s a huge circle with big old dots right over the center of the state.” He is adamant that “a soil-water survey has to occur. We need to know what the devil is happening.”

Florida legislators agreed to allocate $519,000 for NTM testing and surveillance in 2019. But Florida Governor Ron DeSantis vetoed that line item in the budget. WUSF (a National Public Radio affiliate on the USF campus) was unable to get a response to their query about this from the governor’s office.
 

Who gets NTM?

Mycobacterium avium complex primarily causes lung disease, which presents as two clinical syndromes.

“These infections don’t affect everyone,” Kenneth Olivier, MD, MPH, chief of pulmonary clinical medicine, Cardiovascular Pulmonary Branch of the National Heart, Lung, and Blood Institute, said in an interview. They affect “patients that have underlying genetic conditions that cause abnormalities in the airway clearance mechanisms, particularly cystic fibrosis and primary ciliary dyskinesia [and], to some extent, patients with COPD.”

The second group is “comprised mainly of postmenopausal women, many of whom have had no predisposing medical problems prior to onset of generally frequent throat clearing or chronic cough, which is what brings them to medical attention.” Dr. Olivier added that “many of these patients have a fairly unique appearance. They tend to have a high prevalence of curvature of the spine, scoliosis, indentation of the chest wall (pectus excavatum), and physical characteristics that overlap heritable connective tissue disorders like Marfan syndrome or Ehlers-Danlos syndrome.”

Dr. Olivier pointed out a major problem in NTM diagnosis and treatment: “The guidelines-based approach to chronic cough generally calls for treating postnasal drip, airway reactivity, asthma type symptoms first empirically, before doing different diagnostic studies. That generally causes a delay in obtaining things like CT scan, where you can see the characteristic changes.”

Dr. Cannella added, “People are starting to become more aware of it. It’s kind of like pneumocystis back in the 80s. ... We’ve had patients who have had long periods of febrile neutropenia, and NTM wasn’t on the radar. Now we’ve picked up at least seven or eight.”

In addition to pulmonary infections, nosocomial outbreaks have occurred, owing to contaminated heater-cooler units, catheter infections, nail salons, or to medical tourism. These more commonly involve rapidly growing species, such as M abscessus, M chelonae, and M fortuitum. Clinicians should also be aware of skin infections from M marinum, which come from wounds from aquariums, fish, or shellfish. Incubation can occur over months, highlighting the importance of a detailed history and special cultures.
 

 

 

Diagnostics

The diagnosis of NTM is delayed for several reasons. One is the lack of awareness among clinicians about NTM and its risk factors, including hobbies such as gardening or working in places where dirt is aerosolized, such as on road crews, or even from hot tubs. A thorough history is critical.

Another is not recognizing the need for an acid-fast bacilli (AFB) culture, which requires specialized media. Fortunately, NTM can be picked up on fungal cultures, Dr. Cannella noted. Clinicians are sometimes discouraged from culturing AFB because doing so may not be cost-effective. And many hospital laboratories are increasingly sending cultures to outside labs, and it can take days – sometimes even more than a week – to receive a report of results.

Charles Daley, MD, chief of the Division of Mycobacterial and Respiratory Infections at National Jewish Health, expressed his frustration about labs in an interview, saying diagnostics is “an important hole in the U.S., as our laboratories do not provide clinicians with the results that they need to make good decisions. Most laboratories in the U.S. just don’t speciate the organisms or subspeciate in the setting of abscesses. They don’t tell the clinician enough about the susceptibility, particularly whether there’s inducible resistance. As a clinician, you just don’t have the information to make the right decisions. ... We need to improve diagnostics in NTM. Everything is there and available. They just don’t want to do it because it increases the costs.”

Men tend to have fibrocavitary disease, which shows on ordinary chest x-rays, but CT scans are essential for women because women tend to have either nodular disease or bronchiectasis, which does not show on a plain film.
 

Treatment

A standard treatment for NTM lung disease includes three or four medications – clarithromycin or azithromycin, rifampin or rifabutin, ethambutol, and streptomycin or amikacin. In vitro resistance is important in predicting the clinical response to a macrolide or amikacin.

For bronchiectatic disease, National Jewish Hospital recommends treatment three times per week rather than daily therapy, as it is better tolerated. Azithromycin is preferred over clarithromycin. Amikacin should be added if there is cavitary or severe disease, and the macrolide is then given daily.

Dr. Olivier suggested that physicians stagger the initiation of those drugs to improve the tolerability of the difficult regimen. Generally, treatment is for 18 months – a year after sputum cultures become negative.

If therapy fails – that is, sputum is persistently positive at 6 months – amikacin liposomal inhalation solution (Arikayce) is likely to be added. Patients should be monitored with monthly safety labs, sputum cultures, and an audiogram (if receiving amikacin). Every 3 months, vestibular tests, eye exams, and spirometry should be conducted, and every 6 months, physicians should order a CT, an audiogram, and an electrocardiogram.

Despite completing such a rigorous regimen, about half of patients experience reinfection because of their underlying host susceptibility. Genomic sequencing shows that these are new infections, not relapses, Dr. Prevots said. She also noted that gastroesophageal reflux disease is a significant risk factor because of chronic aspiration.

Dr. Daley outlined the newer treatments being studied. They include Arikayce, omadocycline, and bedaquiline. He added, “There’s a neutrophil elastase inhibitor trial that’s ongoing, a huge trial. There’s another one looking at basically eosinophilic inflammation.”

Other trials are in the offing, he said, all focusing on the inflammatory response – a development he described as exciting, because for the longest time, there were few if any NTM trials.

Dr. Cannella is also buoyed by the potential synergy of dual beta-lactam therapy with ceftaroline and a carbapenem for M abscessus infections, which are notoriously difficult to treat.

There are unique problems facing drug development for NTM because, for approval, the U.S. Food and Drug Administration requires the drug to “improve how a patient feels, functions, or survives.” NTM is associated with low mortality, so that “is off the table,” Dr. Daley explained. It’s hard to quantify improvement in function. The top two symptoms to measure are coughing and fatigue, he said. But both are difficult to measure, and some of the medicines worsen cough. Some research groups are now trying to validate patient-reported outcome instruments to satisfy the FDA’s requirements.
 

 

 

Tips for patients and physicians

The experts this news organization spoke to had very consistent recommendations for patients:

  • NTM is resistant to chlorine and bromine, so tap water is a major source of infection. Patients should consider to greater than 130° F and using metal showerheads or bathing rather than showering.
  • Good bathroom ventilation helps.
  • Patients should consider using a water filter that filters entities less than 5 mcm in size – but not carbon filters, which concentrate the organisms.
  • Humidifiers and hot tubs should be avoided.
  • A good face mask, such as an N95, should be worn when gardening or repotting plants.

Dr. Olivier stressed that clinicians should familiarize themselves with the guidelines for diagnosing and treating NTM. In particular, clinicians should be aware that using azithromycin for bronchitis might cause resistance in NTM. “Macrolide resistance turns what may be a slowly progressive or bothersome infection into a lethal infection with a 1-year mortality of 35%.”

He concluded, “I would just urge that if the patient’s on their second or third Z-Pak within a year, it’s probably time to look for other causes of what might be happening.”

Dr. Cannella, Dr. Prevots, and Dr. Olivier reported no relevant financial relationships. Dr. Cannella adds, “My views are not those of my employers, the U.S. Dept of VA, or the University of South Florida Morsani College of Medicine.” Dr. Daley reports research grants/contracts with AN2, Beyond Air, Bugworks, Insmed, and Paratek and service on advisory boards or as a consultant for AN2, AstraZeneca, Genentech, Insmed, Matinas, Paratek, Pfizer, and Spero.

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

Publications
Publications
Topics
Article Type
Sections
Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article

Long-term smell loss in COVID-19 tied to damage in the brain’s olfactory bulb

Article Type
Changed
Tue, 05/24/2022 - 15:58

Patients with COVID-19, especially those with an altered sense of smell, have significantly more axon and microvasculopathy damage in the brain’s olfactory tissue versus non-COVID patients. These new findings from a postmortem study may explain long-term loss of smell in some patients with the virus.

“The striking axonal pathology in some cases indicates that olfactory dysfunction in COVID-19 may be severe and permanent,” the investigators led by Cheng-Ying Ho, MD, PhD, associate professor, department of pathology, Johns Hopkins University School of Medicine, Baltimore, write.

“The results show the damage caused by COVID can extend beyond the nasal cavity and involve the brain,” Dr. Ho told this news organization.

The study was published online April 11 in JAMA Neurology.
 

A more thorough investigation

Patients infected with SARS-CoV-2, which causes COVID-19, present with a wide range of symptoms. In addition to respiratory illnesses, they may exhibit various nonrespiratory manifestations of COVID-19.

One of the most prevalent of these is olfactory dysfunction. Research shows such dysfunction, including anosmia (loss of smell), hyposmia (reduced sense of smell), and parosmia (smells that are distorted or unpleasant), affects 30%-60% of patients with COVID-19, said Dr. Ho.

However, these statistics come from research before the advent of the Omicron variant, which evidence suggests causes less smell loss in patients with COVID, she said.

Previous studies in this area mainly focused on the lining of the nasal cavity. “We wanted to go a step beyond to see how the olfactory bulb was affected by COVID infection,” said Dr. Ho.

The study included 23 deceased patients with confirmed COVID-19 ranging in age from 28 to 93 years at death (median 62 years, 60.9% men). It also included 14 controls who tested negative for COVID-19, ranging in age from 20 to 77 years (median 53.5 years, 50% men).

Researchers collected postmortem tissue from the brain, lung, and other organs and reviewed pertinent clinical information.

Most patients with COVID died of COVID pneumonia or related complications, although some died from a different cause. Some had an active COVID infection and others were “post infection, meaning they were in the recovery stage,” said Dr. Ho.

Six patients with COVID-19 and eight controls had significant brain pathology.

Compared with controls, those with COVID-19 showed significantly worse olfactory axonal damage. The mean axon pathology score (range 1-3 with 3 the worst) was 1.921 in patients with COVID-19 and 1.198 in controls (95% confidence interval, 0.444-1.002; P < .001).

The mean axon density in the lateral olfactory tract was significantly less in patients with COVID-19 than in controls (P = .002), indicating a 23% loss of olfactory axons in the COVID group.

Comparing COVID patients with and without reported loss of smell, researchers found those with an altered sense of smell had significantly more severe olfactory axon pathology.
 

Vascular damage

Patients with COVID also had worse vascular damage. The mean microvasculopathy score (range, 1-3) was 1.907 in patients with COVID-19 and 1.405 in controls (95% CI, 0.259-0.745; P < .001).

There was no evidence of the virus in the olfactory tissue of most patients, suggesting the olfactory pathology was likely caused by vascular damage, said Dr. Ho.

What’s unique about SARS-CoV-2 is that, although it’s a respiratory virus, it’s capable of infecting endothelial cells lining vessels.

“Other respiratory viruses only attack the airways and won’t attack vessels, but vascular damage has been seen in the heart and lung in COVID patients, and our study showed the same findings in the olfactory bulb,” Dr. Ho explained.

The researchers divided patients with COVID by infection severity: mild, moderate, severe, and critical. Interestingly, those with the most severe olfactory pathology were the ones with milder infections, said Dr. Ho.

She noted other studies have reported patients with mild infection are more likely to lose the sense of smell than those with severe infection, but she’s skeptical about this finding.

“Patients with severe COVID are usually hospitalized and intubated, so it’s hard to get them to tell you whether they’ve lost smell or not; they have other more important issues to deal with like respiratory failure,” said Dr. Ho.

Advanced age is associated with neuropathologic changes, such as tau deposits, so the researchers conducted an analysis factoring in age-related brain changes. They found a COVID-19 diagnosis remained associated with increased axonal pathology, reduced axonal density, and increased vascular pathology.

“This means that the COVID patients had more severe olfactory pathology not just because they had more tau pathology,” Dr. Ho added.
 

 

 

New guidance for patients

Commenting for this news organization, Davangere P. Devanand, MD, professor of psychiatry and neurology and director of geriatric psychiatry, Columbia University Irving Medical Center, New York, said the findings indicate the damage from COVID in the olfactory pathway may not be reversible as was previously thought.

“This has been suggested before as a possibility, but the autopsy findings in this case series indicate clearly that there may be permanent damage,” he said.

The results highlight the need to monitor patients with COVID for a smell deficit, said Dr. Devanand. 

“Assuring patients of a full recovery in smell and taste may not be sound advice, although recovery does occur in many patients,” he added.

He praised the study design, especially the blinding of raters, but noted a number of weaknesses, including the small sample size and the age and gender discrepancies between the groups.

Another possible limitation was inclusion of patients with Alzheimer’s and Lewy body pathology, said Dr. Devanand.

“These patients typically already have pathology in the olfactory pathways, which means we don’t know if it was COVID or the underlying brain pathology contributing to smell difficulties in these patients,” he said.

He noted that, unlike deceased COVID cases in the study, patients who survive COVID may not experience axonal and microvascular injury in olfactory neurons and pathways and their sense of smell may make a full return.

Dr. Devanand said he would have liked more detailed information on the clinical history and course of study participants and whether these factors affected the pathology findings.

The study was supported by grants from the National Institutes of Health.

Dr. Ho and Dr. Devanand have reported no relevant financial disclosures.

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

Publications
Topics
Sections

Patients with COVID-19, especially those with an altered sense of smell, have significantly more axon and microvasculopathy damage in the brain’s olfactory tissue versus non-COVID patients. These new findings from a postmortem study may explain long-term loss of smell in some patients with the virus.

“The striking axonal pathology in some cases indicates that olfactory dysfunction in COVID-19 may be severe and permanent,” the investigators led by Cheng-Ying Ho, MD, PhD, associate professor, department of pathology, Johns Hopkins University School of Medicine, Baltimore, write.

“The results show the damage caused by COVID can extend beyond the nasal cavity and involve the brain,” Dr. Ho told this news organization.

The study was published online April 11 in JAMA Neurology.
 

A more thorough investigation

Patients infected with SARS-CoV-2, which causes COVID-19, present with a wide range of symptoms. In addition to respiratory illnesses, they may exhibit various nonrespiratory manifestations of COVID-19.

One of the most prevalent of these is olfactory dysfunction. Research shows such dysfunction, including anosmia (loss of smell), hyposmia (reduced sense of smell), and parosmia (smells that are distorted or unpleasant), affects 30%-60% of patients with COVID-19, said Dr. Ho.

However, these statistics come from research before the advent of the Omicron variant, which evidence suggests causes less smell loss in patients with COVID, she said.

Previous studies in this area mainly focused on the lining of the nasal cavity. “We wanted to go a step beyond to see how the olfactory bulb was affected by COVID infection,” said Dr. Ho.

The study included 23 deceased patients with confirmed COVID-19 ranging in age from 28 to 93 years at death (median 62 years, 60.9% men). It also included 14 controls who tested negative for COVID-19, ranging in age from 20 to 77 years (median 53.5 years, 50% men).

Researchers collected postmortem tissue from the brain, lung, and other organs and reviewed pertinent clinical information.

Most patients with COVID died of COVID pneumonia or related complications, although some died from a different cause. Some had an active COVID infection and others were “post infection, meaning they were in the recovery stage,” said Dr. Ho.

Six patients with COVID-19 and eight controls had significant brain pathology.

Compared with controls, those with COVID-19 showed significantly worse olfactory axonal damage. The mean axon pathology score (range 1-3 with 3 the worst) was 1.921 in patients with COVID-19 and 1.198 in controls (95% confidence interval, 0.444-1.002; P < .001).

The mean axon density in the lateral olfactory tract was significantly less in patients with COVID-19 than in controls (P = .002), indicating a 23% loss of olfactory axons in the COVID group.

Comparing COVID patients with and without reported loss of smell, researchers found those with an altered sense of smell had significantly more severe olfactory axon pathology.
 

Vascular damage

Patients with COVID also had worse vascular damage. The mean microvasculopathy score (range, 1-3) was 1.907 in patients with COVID-19 and 1.405 in controls (95% CI, 0.259-0.745; P < .001).

There was no evidence of the virus in the olfactory tissue of most patients, suggesting the olfactory pathology was likely caused by vascular damage, said Dr. Ho.

What’s unique about SARS-CoV-2 is that, although it’s a respiratory virus, it’s capable of infecting endothelial cells lining vessels.

“Other respiratory viruses only attack the airways and won’t attack vessels, but vascular damage has been seen in the heart and lung in COVID patients, and our study showed the same findings in the olfactory bulb,” Dr. Ho explained.

The researchers divided patients with COVID by infection severity: mild, moderate, severe, and critical. Interestingly, those with the most severe olfactory pathology were the ones with milder infections, said Dr. Ho.

She noted other studies have reported patients with mild infection are more likely to lose the sense of smell than those with severe infection, but she’s skeptical about this finding.

“Patients with severe COVID are usually hospitalized and intubated, so it’s hard to get them to tell you whether they’ve lost smell or not; they have other more important issues to deal with like respiratory failure,” said Dr. Ho.

Advanced age is associated with neuropathologic changes, such as tau deposits, so the researchers conducted an analysis factoring in age-related brain changes. They found a COVID-19 diagnosis remained associated with increased axonal pathology, reduced axonal density, and increased vascular pathology.

“This means that the COVID patients had more severe olfactory pathology not just because they had more tau pathology,” Dr. Ho added.
 

 

 

New guidance for patients

Commenting for this news organization, Davangere P. Devanand, MD, professor of psychiatry and neurology and director of geriatric psychiatry, Columbia University Irving Medical Center, New York, said the findings indicate the damage from COVID in the olfactory pathway may not be reversible as was previously thought.

“This has been suggested before as a possibility, but the autopsy findings in this case series indicate clearly that there may be permanent damage,” he said.

The results highlight the need to monitor patients with COVID for a smell deficit, said Dr. Devanand. 

“Assuring patients of a full recovery in smell and taste may not be sound advice, although recovery does occur in many patients,” he added.

He praised the study design, especially the blinding of raters, but noted a number of weaknesses, including the small sample size and the age and gender discrepancies between the groups.

Another possible limitation was inclusion of patients with Alzheimer’s and Lewy body pathology, said Dr. Devanand.

“These patients typically already have pathology in the olfactory pathways, which means we don’t know if it was COVID or the underlying brain pathology contributing to smell difficulties in these patients,” he said.

He noted that, unlike deceased COVID cases in the study, patients who survive COVID may not experience axonal and microvascular injury in olfactory neurons and pathways and their sense of smell may make a full return.

Dr. Devanand said he would have liked more detailed information on the clinical history and course of study participants and whether these factors affected the pathology findings.

The study was supported by grants from the National Institutes of Health.

Dr. Ho and Dr. Devanand have reported no relevant financial disclosures.

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

Patients with COVID-19, especially those with an altered sense of smell, have significantly more axon and microvasculopathy damage in the brain’s olfactory tissue versus non-COVID patients. These new findings from a postmortem study may explain long-term loss of smell in some patients with the virus.

“The striking axonal pathology in some cases indicates that olfactory dysfunction in COVID-19 may be severe and permanent,” the investigators led by Cheng-Ying Ho, MD, PhD, associate professor, department of pathology, Johns Hopkins University School of Medicine, Baltimore, write.

“The results show the damage caused by COVID can extend beyond the nasal cavity and involve the brain,” Dr. Ho told this news organization.

The study was published online April 11 in JAMA Neurology.
 

A more thorough investigation

Patients infected with SARS-CoV-2, which causes COVID-19, present with a wide range of symptoms. In addition to respiratory illnesses, they may exhibit various nonrespiratory manifestations of COVID-19.

One of the most prevalent of these is olfactory dysfunction. Research shows such dysfunction, including anosmia (loss of smell), hyposmia (reduced sense of smell), and parosmia (smells that are distorted or unpleasant), affects 30%-60% of patients with COVID-19, said Dr. Ho.

However, these statistics come from research before the advent of the Omicron variant, which evidence suggests causes less smell loss in patients with COVID, she said.

Previous studies in this area mainly focused on the lining of the nasal cavity. “We wanted to go a step beyond to see how the olfactory bulb was affected by COVID infection,” said Dr. Ho.

The study included 23 deceased patients with confirmed COVID-19 ranging in age from 28 to 93 years at death (median 62 years, 60.9% men). It also included 14 controls who tested negative for COVID-19, ranging in age from 20 to 77 years (median 53.5 years, 50% men).

Researchers collected postmortem tissue from the brain, lung, and other organs and reviewed pertinent clinical information.

Most patients with COVID died of COVID pneumonia or related complications, although some died from a different cause. Some had an active COVID infection and others were “post infection, meaning they were in the recovery stage,” said Dr. Ho.

Six patients with COVID-19 and eight controls had significant brain pathology.

Compared with controls, those with COVID-19 showed significantly worse olfactory axonal damage. The mean axon pathology score (range 1-3 with 3 the worst) was 1.921 in patients with COVID-19 and 1.198 in controls (95% confidence interval, 0.444-1.002; P < .001).

The mean axon density in the lateral olfactory tract was significantly less in patients with COVID-19 than in controls (P = .002), indicating a 23% loss of olfactory axons in the COVID group.

Comparing COVID patients with and without reported loss of smell, researchers found those with an altered sense of smell had significantly more severe olfactory axon pathology.
 

Vascular damage

Patients with COVID also had worse vascular damage. The mean microvasculopathy score (range, 1-3) was 1.907 in patients with COVID-19 and 1.405 in controls (95% CI, 0.259-0.745; P < .001).

There was no evidence of the virus in the olfactory tissue of most patients, suggesting the olfactory pathology was likely caused by vascular damage, said Dr. Ho.

What’s unique about SARS-CoV-2 is that, although it’s a respiratory virus, it’s capable of infecting endothelial cells lining vessels.

“Other respiratory viruses only attack the airways and won’t attack vessels, but vascular damage has been seen in the heart and lung in COVID patients, and our study showed the same findings in the olfactory bulb,” Dr. Ho explained.

The researchers divided patients with COVID by infection severity: mild, moderate, severe, and critical. Interestingly, those with the most severe olfactory pathology were the ones with milder infections, said Dr. Ho.

She noted other studies have reported patients with mild infection are more likely to lose the sense of smell than those with severe infection, but she’s skeptical about this finding.

“Patients with severe COVID are usually hospitalized and intubated, so it’s hard to get them to tell you whether they’ve lost smell or not; they have other more important issues to deal with like respiratory failure,” said Dr. Ho.

Advanced age is associated with neuropathologic changes, such as tau deposits, so the researchers conducted an analysis factoring in age-related brain changes. They found a COVID-19 diagnosis remained associated with increased axonal pathology, reduced axonal density, and increased vascular pathology.

“This means that the COVID patients had more severe olfactory pathology not just because they had more tau pathology,” Dr. Ho added.
 

 

 

New guidance for patients

Commenting for this news organization, Davangere P. Devanand, MD, professor of psychiatry and neurology and director of geriatric psychiatry, Columbia University Irving Medical Center, New York, said the findings indicate the damage from COVID in the olfactory pathway may not be reversible as was previously thought.

“This has been suggested before as a possibility, but the autopsy findings in this case series indicate clearly that there may be permanent damage,” he said.

The results highlight the need to monitor patients with COVID for a smell deficit, said Dr. Devanand. 

“Assuring patients of a full recovery in smell and taste may not be sound advice, although recovery does occur in many patients,” he added.

He praised the study design, especially the blinding of raters, but noted a number of weaknesses, including the small sample size and the age and gender discrepancies between the groups.

Another possible limitation was inclusion of patients with Alzheimer’s and Lewy body pathology, said Dr. Devanand.

“These patients typically already have pathology in the olfactory pathways, which means we don’t know if it was COVID or the underlying brain pathology contributing to smell difficulties in these patients,” he said.

He noted that, unlike deceased COVID cases in the study, patients who survive COVID may not experience axonal and microvascular injury in olfactory neurons and pathways and their sense of smell may make a full return.

Dr. Devanand said he would have liked more detailed information on the clinical history and course of study participants and whether these factors affected the pathology findings.

The study was supported by grants from the National Institutes of Health.

Dr. Ho and Dr. Devanand have reported no relevant financial disclosures.

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

Publications
Publications
Topics
Article Type
Sections
Article Source

FROM JAMA NEUROLOGY

Disallow All Ads
Content Gating
No Gating (article Unlocked/Free)
Alternative CME
Disqus Comments
Default
Use ProPublica
Hide sidebar & use full width
render the right sidebar.
Conference Recap Checkbox
Not Conference Recap
Clinical Edge
Display the Slideshow in this Article
Medscape Article
Display survey writer
Reuters content
Disable Inline Native ads
WebMD Article