COVID-19 Updates

TOPLINE:

The risk for Guillain-Barré syndrome (GBS) is six times higher in people with COVID-19 in the 6 weeks following infection, according to a new study that also showed receipt of the Pfizer-BioNTech mRNA vaccine reduced GSB risk by 59%.

METHODOLOGY:

• The nested-case control study analyzed data from the largest healthcare provider in Israel for 3.2 million patients aged 16 years and older, with no history of GBS.
• GBS cases (n = 76) were identified based on hospital discharge data from January 2021 to June 2022.
• For every GBS case, investigators chose 10 controls at random, matched for age, gender, and follow-up duration (n = 760).
• Investigators examined the association between GBS and SARS-CoV-2 infection, established through documentation of prior positive SARS-CoV-2 test (PCR or antigen), and any COVID-19 vaccine administration.

TAKEAWAY:

• Among those diagnosed with GBS, 8 were exposed to SARS-CoV-2 infection only, 7 were exposed to COVID-19 vaccination only, and 1 patient was exposed to both SARS-CoV-2 infection and COVID-19 vaccination in the prior 6 weeks, leaving 60 GBS patients without exposure to either infection or vaccination.
• All COVID-19 vaccine doses administered in GBS cases within 6 weeks of the index date, and all but two doses administered in controls in the same timeframe, were Pfizer-BioNTech vaccines.
• Compared with people without GBS, those with the condition were more than six times as likely to have had SARS-CoV-2 infection within 6 weeks of GBS diagnosis (adjusted odds ratio, 6.30; 95% confidence interval, 2.55-15.56).
• People who received the COVID-19 vaccine were 59% less likely to develop GBS than those who did not get the vaccine (aOR, 0.41; 95% CI, 0.17-0.96).

IN PRACTICE:

“While Guillain-Barré is extremely rare, people should be aware that having a COVID infection can increase their risk of developing the disorder, and receiving an mRNA vaccine can decrease their risk,” study author Anat Arbel, MD, of Lady Davis Carmel Medical Center and the Technion-Israel Institute of Technology, Haifa, Israel, said in a press release.

SOURCE:

In addition to Dr. Arbel, the other lead author is Haya Bishara, MD, of Lady Davis Carmel Medical Center. The research was published online  in the journal Neurology.

LIMITATIONS:

There is a possibility of misclassification of SARS-CoV-2 infection, which could lead to an overestimation of the magnitude of association between infection and GBS. The diagnosis of GBS relied solely on ICD-9 coding, which has been shown in prior studies to contain errors.

DISCLOSURES:

The study was unfunded. Dr. Bishara and Dr. Arbel report no relevant financial relationships. One co-author, Eitan Auriel, MD, has received lecturer fees from Novo Nordisk, Pfizer, Boehringer Ingelheim, and Medison.

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

TOPLINE:

The risk for Guillain-Barré syndrome (GBS) is six times higher in people with COVID-19 in the 6 weeks following infection, according to a new study that also showed receipt of the Pfizer-BioNTech mRNA vaccine reduced GSB risk by 59%.

METHODOLOGY:

• The nested-case control study analyzed data from the largest healthcare provider in Israel for 3.2 million patients aged 16 years and older, with no history of GBS.
• GBS cases (n = 76) were identified based on hospital discharge data from January 2021 to June 2022.
• For every GBS case, investigators chose 10 controls at random, matched for age, gender, and follow-up duration (n = 760).
• Investigators examined the association between GBS and SARS-CoV-2 infection, established through documentation of prior positive SARS-CoV-2 test (PCR or antigen), and any COVID-19 vaccine administration.

TAKEAWAY:

• Among those diagnosed with GBS, 8 were exposed to SARS-CoV-2 infection only, 7 were exposed to COVID-19 vaccination only, and 1 patient was exposed to both SARS-CoV-2 infection and COVID-19 vaccination in the prior 6 weeks, leaving 60 GBS patients without exposure to either infection or vaccination.
• All COVID-19 vaccine doses administered in GBS cases within 6 weeks of the index date, and all but two doses administered in controls in the same timeframe, were Pfizer-BioNTech vaccines.
• Compared with people without GBS, those with the condition were more than six times as likely to have had SARS-CoV-2 infection within 6 weeks of GBS diagnosis (adjusted odds ratio, 6.30; 95% confidence interval, 2.55-15.56).
• People who received the COVID-19 vaccine were 59% less likely to develop GBS than those who did not get the vaccine (aOR, 0.41; 95% CI, 0.17-0.96).

IN PRACTICE:

“While Guillain-Barré is extremely rare, people should be aware that having a COVID infection can increase their risk of developing the disorder, and receiving an mRNA vaccine can decrease their risk,” study author Anat Arbel, MD, of Lady Davis Carmel Medical Center and the Technion-Israel Institute of Technology, Haifa, Israel, said in a press release.

SOURCE:

In addition to Dr. Arbel, the other lead author is Haya Bishara, MD, of Lady Davis Carmel Medical Center. The research was published online  in the journal Neurology.

LIMITATIONS:

There is a possibility of misclassification of SARS-CoV-2 infection, which could lead to an overestimation of the magnitude of association between infection and GBS. The diagnosis of GBS relied solely on ICD-9 coding, which has been shown in prior studies to contain errors.

DISCLOSURES:

The study was unfunded. Dr. Bishara and Dr. Arbel report no relevant financial relationships. One co-author, Eitan Auriel, MD, has received lecturer fees from Novo Nordisk, Pfizer, Boehringer Ingelheim, and Medison.

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

TOPLINE:

The risk for Guillain-Barré syndrome (GBS) is six times higher in people with COVID-19 in the 6 weeks following infection, according to a new study that also showed receipt of the Pfizer-BioNTech mRNA vaccine reduced GSB risk by 59%.

METHODOLOGY:

• The nested-case control study analyzed data from the largest healthcare provider in Israel for 3.2 million patients aged 16 years and older, with no history of GBS.
• GBS cases (n = 76) were identified based on hospital discharge data from January 2021 to June 2022.
• For every GBS case, investigators chose 10 controls at random, matched for age, gender, and follow-up duration (n = 760).
• Investigators examined the association between GBS and SARS-CoV-2 infection, established through documentation of prior positive SARS-CoV-2 test (PCR or antigen), and any COVID-19 vaccine administration.

TAKEAWAY:

• Among those diagnosed with GBS, 8 were exposed to SARS-CoV-2 infection only, 7 were exposed to COVID-19 vaccination only, and 1 patient was exposed to both SARS-CoV-2 infection and COVID-19 vaccination in the prior 6 weeks, leaving 60 GBS patients without exposure to either infection or vaccination.
• All COVID-19 vaccine doses administered in GBS cases within 6 weeks of the index date, and all but two doses administered in controls in the same timeframe, were Pfizer-BioNTech vaccines.
• Compared with people without GBS, those with the condition were more than six times as likely to have had SARS-CoV-2 infection within 6 weeks of GBS diagnosis (adjusted odds ratio, 6.30; 95% confidence interval, 2.55-15.56).
• People who received the COVID-19 vaccine were 59% less likely to develop GBS than those who did not get the vaccine (aOR, 0.41; 95% CI, 0.17-0.96).

IN PRACTICE:

“While Guillain-Barré is extremely rare, people should be aware that having a COVID infection can increase their risk of developing the disorder, and receiving an mRNA vaccine can decrease their risk,” study author Anat Arbel, MD, of Lady Davis Carmel Medical Center and the Technion-Israel Institute of Technology, Haifa, Israel, said in a press release.

SOURCE:

In addition to Dr. Arbel, the other lead author is Haya Bishara, MD, of Lady Davis Carmel Medical Center. The research was published online  in the journal Neurology.

LIMITATIONS:

There is a possibility of misclassification of SARS-CoV-2 infection, which could lead to an overestimation of the magnitude of association between infection and GBS. The diagnosis of GBS relied solely on ICD-9 coding, which has been shown in prior studies to contain errors.

DISCLOSURES:

The study was unfunded. Dr. Bishara and Dr. Arbel report no relevant financial relationships. One co-author, Eitan Auriel, MD, has received lecturer fees from Novo Nordisk, Pfizer, Boehringer Ingelheim, and Medison.

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

Until a couple of weeks ago I considered myself a COVID virgin. I had navigated a full 36 months without a positive test, despite cohabiting with my wife in a 2,500-square-foot house during her bout with the SARS-CoV-2 virus last year. I have been reasonably careful, a situational mask wearer, and good about avoiding poorly ventilated crowded spaces. Of course I was fully vaccinated but was waiting until we had gotten closer to a December trip before getting the newest booster.

I had always been quietly smug about my good luck. And, I was pretty sure that luck had been the major contributor to my run of good health. Nonetheless, in my private moments I often wondered if I somehow had inherited or acquired an unusual defense against the virus that had been getting the best of my peers. One rather far-fetched explanation that kept popping out of my subconscious involved my profuse and persistent runny nose.

Like a fair number in my demographic, I have what I have self-diagnosed as vasomotor rhinitis. In the cooler months and particularly when I am active outdoors, my nose runs like a faucet. I half-jokingly told my wife after a particularly drippy bike ride on a frigid November afternoon that even the most robust virus couldn’t possibly have survived the swim upstream against torrent of mucus splashing onto the handlebars of my bike.

A recent study published in the journal Cell suggests that my off-the-wall explanation for my COVID resistance wasn’t quite so hair-brained. The investigators haven’t found that septuagenarian adults with high-volume runny noses are drowning the SARS-Co- 2 virus before it can do any damage. However, the researchers did discover that, in general, young children seem to be having fewer and milder COVID infections because “infants mount a robust mucosal response” in their noses. This first line of defense seems to be more effective than in adults, where the virus can more easily slip through into the bloodstream, sometimes with a dramatic release of circulating cytokines, which occasionally create problems of their own. Children also release cytokines, but this is predominantly in their nose, where it appears to be less damaging. Interestingly, in children this initial response persists for around 300 days while in adults the immune response experiences a much more rapid decline. I guess this means we have to chalk one more up for snotty nose kids.

However, the results of this study also suggest that we should be giving more attention to the development of nasal vaccines. I recall that nearly 3 years ago, at the beginning of the pandemic, scientists using a ferret model had developed an effective nasal vaccine. I’m not sure why this faded out of the picture, but it feels like it’s time to turn the spotlight on this line of research again.

I suspect that in addition to being more effective, a nasal vaccine may gain more support among the antivaxxer population, many of whom I suspect are really needle phobics hiding behind a smoke screen of anti-science double talk.

At any rate, I will continue to search for articles that support my contention that my high-flow rhinorrhea is protecting me. I have always been told that a cold nose was the sign of a healthy dog. I’m just trying to prove that the same is true for us old guys with clear runny noses.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

Until a couple of weeks ago I considered myself a COVID virgin. I had navigated a full 36 months without a positive test, despite cohabiting with my wife in a 2,500-square-foot house during her bout with the SARS-CoV-2 virus last year. I have been reasonably careful, a situational mask wearer, and good about avoiding poorly ventilated crowded spaces. Of course I was fully vaccinated but was waiting until we had gotten closer to a December trip before getting the newest booster.

I had always been quietly smug about my good luck. And, I was pretty sure that luck had been the major contributor to my run of good health. Nonetheless, in my private moments I often wondered if I somehow had inherited or acquired an unusual defense against the virus that had been getting the best of my peers. One rather far-fetched explanation that kept popping out of my subconscious involved my profuse and persistent runny nose.

Like a fair number in my demographic, I have what I have self-diagnosed as vasomotor rhinitis. In the cooler months and particularly when I am active outdoors, my nose runs like a faucet. I half-jokingly told my wife after a particularly drippy bike ride on a frigid November afternoon that even the most robust virus couldn’t possibly have survived the swim upstream against torrent of mucus splashing onto the handlebars of my bike.

A recent study published in the journal Cell suggests that my off-the-wall explanation for my COVID resistance wasn’t quite so hair-brained. The investigators haven’t found that septuagenarian adults with high-volume runny noses are drowning the SARS-Co- 2 virus before it can do any damage. However, the researchers did discover that, in general, young children seem to be having fewer and milder COVID infections because “infants mount a robust mucosal response” in their noses. This first line of defense seems to be more effective than in adults, where the virus can more easily slip through into the bloodstream, sometimes with a dramatic release of circulating cytokines, which occasionally create problems of their own. Children also release cytokines, but this is predominantly in their nose, where it appears to be less damaging. Interestingly, in children this initial response persists for around 300 days while in adults the immune response experiences a much more rapid decline. I guess this means we have to chalk one more up for snotty nose kids.

However, the results of this study also suggest that we should be giving more attention to the development of nasal vaccines. I recall that nearly 3 years ago, at the beginning of the pandemic, scientists using a ferret model had developed an effective nasal vaccine. I’m not sure why this faded out of the picture, but it feels like it’s time to turn the spotlight on this line of research again.

I suspect that in addition to being more effective, a nasal vaccine may gain more support among the antivaxxer population, many of whom I suspect are really needle phobics hiding behind a smoke screen of anti-science double talk.

At any rate, I will continue to search for articles that support my contention that my high-flow rhinorrhea is protecting me. I have always been told that a cold nose was the sign of a healthy dog. I’m just trying to prove that the same is true for us old guys with clear runny noses.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

Until a couple of weeks ago I considered myself a COVID virgin. I had navigated a full 36 months without a positive test, despite cohabiting with my wife in a 2,500-square-foot house during her bout with the SARS-CoV-2 virus last year. I have been reasonably careful, a situational mask wearer, and good about avoiding poorly ventilated crowded spaces. Of course I was fully vaccinated but was waiting until we had gotten closer to a December trip before getting the newest booster.

I had always been quietly smug about my good luck. And, I was pretty sure that luck had been the major contributor to my run of good health. Nonetheless, in my private moments I often wondered if I somehow had inherited or acquired an unusual defense against the virus that had been getting the best of my peers. One rather far-fetched explanation that kept popping out of my subconscious involved my profuse and persistent runny nose.

Like a fair number in my demographic, I have what I have self-diagnosed as vasomotor rhinitis. In the cooler months and particularly when I am active outdoors, my nose runs like a faucet. I half-jokingly told my wife after a particularly drippy bike ride on a frigid November afternoon that even the most robust virus couldn’t possibly have survived the swim upstream against torrent of mucus splashing onto the handlebars of my bike.

A recent study published in the journal Cell suggests that my off-the-wall explanation for my COVID resistance wasn’t quite so hair-brained. The investigators haven’t found that septuagenarian adults with high-volume runny noses are drowning the SARS-Co- 2 virus before it can do any damage. However, the researchers did discover that, in general, young children seem to be having fewer and milder COVID infections because “infants mount a robust mucosal response” in their noses. This first line of defense seems to be more effective than in adults, where the virus can more easily slip through into the bloodstream, sometimes with a dramatic release of circulating cytokines, which occasionally create problems of their own. Children also release cytokines, but this is predominantly in their nose, where it appears to be less damaging. Interestingly, in children this initial response persists for around 300 days while in adults the immune response experiences a much more rapid decline. I guess this means we have to chalk one more up for snotty nose kids.

However, the results of this study also suggest that we should be giving more attention to the development of nasal vaccines. I recall that nearly 3 years ago, at the beginning of the pandemic, scientists using a ferret model had developed an effective nasal vaccine. I’m not sure why this faded out of the picture, but it feels like it’s time to turn the spotlight on this line of research again.

I suspect that in addition to being more effective, a nasal vaccine may gain more support among the antivaxxer population, many of whom I suspect are really needle phobics hiding behind a smoke screen of anti-science double talk.

At any rate, I will continue to search for articles that support my contention that my high-flow rhinorrhea is protecting me. I have always been told that a cold nose was the sign of a healthy dog. I’m just trying to prove that the same is true for us old guys with clear runny noses.

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

New evidence shows for the first time that the virus that causes COVID directly infects atherosclerotic plaques in the coronary arteries, producing a persistent inflammatory response.

The findings may not only explain the link between COVID and the increased risk of cardiovascular events but mark a starting point for new therapeutic approaches.

“Our study shows there is persistence of viral debris in the artery,” senior investigator Chiara Giannarelli, MD, associate professor of medicine and pathology at NYU Langone Health, New York, said in an interview. “There is an important inflammatory response. We can now look at ways to control this inflammation,” she said.

Dr. Giannarelli says COVID is more than a respiratory virus and that it can affect the whole body. “Our study shows a remarkable ability of the virus to hijack the immune system,” she points out. “Our findings may explain how that happens.”

Dr. Giannarelli says it’s important for doctors and patients to be aware of an increased cardiovascular risk after a SARS-CoV-2 infection and to pay extra attention to traditional risk factors, such as blood pressure and cholesterol.

“This study showing that severe acute respiratory syndrome coronavirus directly infects coronary artery plaques, producing inflammatory substances, really joins the dots and helps our understanding on why we’re seeing so much heart disease in COVID patients,” Peter Hotez, MD, professor of molecular virology and microbiology at Baylor College of Medicine, Houston, said in an interview.

Asked whether this direct infection of vascular plaques was unique to SARS-CoV-2 or whether this may also occur with other viruses, both Dr. Giannarelli and Dr. Hotez said they believe this may be a specific COVID effect.

“I wouldn’t say it is likely that other viruses infect coronary arteries in this way, but I suppose it is possible,” Dr. Giannarelli said.

Dr. Hotez pointed out that other viruses can cause inflammation in the heart, such as myocarditis. “But I can’t think of another virus that stimulates the sequence of events in coronary artery inflammation like we’re seeing here.”

Dr. Giannarelli noted that influenza is also associated with an increased risk of cardiovascular events, but there has been no evidence to date that it directly affects coronary arteries.

Dr. Hotez added that the increased risk of cardiovascular events with influenza has also been reported to be prolonged after the acute infection. “These new findings with SARS-CoV-2 could stimulate a redoubling of efforts to look at this possibility with influenza,” he suggested.
 

Heart disease after COVID

In a recent article published online in Nature Cardiovascular Research, Dr. Giannarelli and colleagues analyzed human autopsy tissue samples from coronary arterial walls of patients who had died from COVID in the early stages of the pandemic in New York.

They found an accumulation of viral RNA in atherosclerotic plaques in the coronary arteries, which was particularly concentrated in lipid-rich macrophage foam cells present within the plaques.

“Our data conclusively demonstrate that severe acute respiratory syndrome coronavirus is capable of infecting and replicating in macrophages within the coronary vasculature,” the researchers report.

The virus preferentially replicates in foam cells, in comparison with other macrophages, they add, suggesting that these cells might act as a reservoir of viral debris in atherosclerotic plaque.

“We have shown that the virus is targeting lipid-rich macrophages in atherosclerotic lesions. This is the first time this has been shown, and we think this is a very important finding,” Dr. Giannarelli said in an interview.

“We also found that the virus persists in these foam cells that could be responsible for long-term, low-grade inflammation in the vasculature that could contribute to the long-term cardiovascular manifestations in patients who have recovered from COVID,” she said.
 

Viral reservoirs

Macrophages residing in vascular tissue can undergo self-renewal and can remain in the tissue for many years, the investigators point out. They suggest that these macrophages may act as viral reservoirs of SARS-CoV-2 RNA in atherosclerotic plaques.

Using an ex vivo model, the researchers also found that atherosclerotic tissue could be directly infected by the virus. And just as was seen in cultured macrophages and foam cells, infection of vascular tissue triggered an inflammatory response. That response induced the secretion of key proatherogenic cytokines, such as interleukin-6 and interleukin-1 beta, which have been implicated in the pathogenesis of atherosclerosis and in an increased risk of cardiovascular events.

“Considering that plaque inflammation promotes disease progression and contributes to plaque rupture, our results provide a molecular basis for how infection of coronary lesions can contribute to the acute cardiovascular manifestations of COVID-19, such as myocardial infarction,” the researchers report.

Another interesting finding was a higher accumulation of viral RNA in the coronary vasculature of the three patients with acute ischemic cardiovascular manifestations, which they say adds to evidence that infection may increase cardiovascular risk.

Dr. Giannarelli points out that the patients in their study died in New York early in the pandemic, before vaccines were available. “They were unvaccinated and likely had little immunity against initial viral strains.”

Dr. Hotez says that when COVID-19 first emerged, many in the medical and scientific communities thought it would closely resemble the original SARS viral infection, which was primarily a respiratory pathogen.

“But it became pretty clear early on this virus was causing a lot of cardiovascular and thromboembolic disease,” he says. “This study provides an insight into the mechanisms involved here.”
 

Affecting more than lungs

Dr. Hotez pointed out that a recent study reported a 5% increase in cardiovascular deaths during the years 2020-2022, compared with before the pandemic.

“Those peaks of cardiovascular deaths corresponded with specific waves of COVID – the first happening at the time of the initial wave with the original virus and second during the Delta wave. So, there’s no question that this virus is contributing to excess cardiovascular mortality, and this paper appears to explain the mechanism.”

Dr. Hotez pointed out that the new findings suggest the cardiovascular risk may be prolonged well after the acute infection resolves.

“In long COVID, a lot of people focus on the neurological effects – brain fog and depression. But cardiac insufficiency and other cardiovascular events can also be considered another element of long COVID,” he said.

Dr. Giannarelli says her group is now studying whether patients with long COVID have virus in their coronary arteries. She points out that the current studies were a result of a team effort between experts in cardiovascular disease and virology and infectious disease. “We need to collaborate more like this to understand better the impact of viral infection in patients and the clinical manifestations,” she said.

Dr. Hotez says he believes these new findings will have implications for the future.

“COVID hasn’t gone away. The numbers have been going up again steadily in the U.S. in the last few months. There are still a significant number of hospitalizations,” he said.

While it would be unwieldy to ask for a cardiology consult for every COVID patient, he acknowledged, “there is probably a subset of people – possibly those of older age and who have had a severe case of COVID – who we suspect are now going to be more prone to cardiovascular disease because of having COVID.

“We should be vigilant in looking for cardiovascular disease in these patients,” Dr. Hotez said, “and perhaps be a bit more aggressive about controlling their cardiovascular risk factors.”

The study was funded by the U.S. National Institutes of Health, the American Heart Association, and the Chan Zuckerberg Initiative.

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

New evidence shows for the first time that the virus that causes COVID directly infects atherosclerotic plaques in the coronary arteries, producing a persistent inflammatory response.

The findings may not only explain the link between COVID and the increased risk of cardiovascular events but mark a starting point for new therapeutic approaches.

“Our study shows there is persistence of viral debris in the artery,” senior investigator Chiara Giannarelli, MD, associate professor of medicine and pathology at NYU Langone Health, New York, said in an interview. “There is an important inflammatory response. We can now look at ways to control this inflammation,” she said.

Dr. Giannarelli says COVID is more than a respiratory virus and that it can affect the whole body. “Our study shows a remarkable ability of the virus to hijack the immune system,” she points out. “Our findings may explain how that happens.”

Dr. Giannarelli says it’s important for doctors and patients to be aware of an increased cardiovascular risk after a SARS-CoV-2 infection and to pay extra attention to traditional risk factors, such as blood pressure and cholesterol.

“This study showing that severe acute respiratory syndrome coronavirus directly infects coronary artery plaques, producing inflammatory substances, really joins the dots and helps our understanding on why we’re seeing so much heart disease in COVID patients,” Peter Hotez, MD, professor of molecular virology and microbiology at Baylor College of Medicine, Houston, said in an interview.

Asked whether this direct infection of vascular plaques was unique to SARS-CoV-2 or whether this may also occur with other viruses, both Dr. Giannarelli and Dr. Hotez said they believe this may be a specific COVID effect.

“I wouldn’t say it is likely that other viruses infect coronary arteries in this way, but I suppose it is possible,” Dr. Giannarelli said.

Dr. Hotez pointed out that other viruses can cause inflammation in the heart, such as myocarditis. “But I can’t think of another virus that stimulates the sequence of events in coronary artery inflammation like we’re seeing here.”

Dr. Giannarelli noted that influenza is also associated with an increased risk of cardiovascular events, but there has been no evidence to date that it directly affects coronary arteries.

Dr. Hotez added that the increased risk of cardiovascular events with influenza has also been reported to be prolonged after the acute infection. “These new findings with SARS-CoV-2 could stimulate a redoubling of efforts to look at this possibility with influenza,” he suggested.
 

Heart disease after COVID

In a recent article published online in Nature Cardiovascular Research, Dr. Giannarelli and colleagues analyzed human autopsy tissue samples from coronary arterial walls of patients who had died from COVID in the early stages of the pandemic in New York.

They found an accumulation of viral RNA in atherosclerotic plaques in the coronary arteries, which was particularly concentrated in lipid-rich macrophage foam cells present within the plaques.

“Our data conclusively demonstrate that severe acute respiratory syndrome coronavirus is capable of infecting and replicating in macrophages within the coronary vasculature,” the researchers report.

The virus preferentially replicates in foam cells, in comparison with other macrophages, they add, suggesting that these cells might act as a reservoir of viral debris in atherosclerotic plaque.

“We have shown that the virus is targeting lipid-rich macrophages in atherosclerotic lesions. This is the first time this has been shown, and we think this is a very important finding,” Dr. Giannarelli said in an interview.

“We also found that the virus persists in these foam cells that could be responsible for long-term, low-grade inflammation in the vasculature that could contribute to the long-term cardiovascular manifestations in patients who have recovered from COVID,” she said.
 

Viral reservoirs

Macrophages residing in vascular tissue can undergo self-renewal and can remain in the tissue for many years, the investigators point out. They suggest that these macrophages may act as viral reservoirs of SARS-CoV-2 RNA in atherosclerotic plaques.

Using an ex vivo model, the researchers also found that atherosclerotic tissue could be directly infected by the virus. And just as was seen in cultured macrophages and foam cells, infection of vascular tissue triggered an inflammatory response. That response induced the secretion of key proatherogenic cytokines, such as interleukin-6 and interleukin-1 beta, which have been implicated in the pathogenesis of atherosclerosis and in an increased risk of cardiovascular events.

“Considering that plaque inflammation promotes disease progression and contributes to plaque rupture, our results provide a molecular basis for how infection of coronary lesions can contribute to the acute cardiovascular manifestations of COVID-19, such as myocardial infarction,” the researchers report.

Another interesting finding was a higher accumulation of viral RNA in the coronary vasculature of the three patients with acute ischemic cardiovascular manifestations, which they say adds to evidence that infection may increase cardiovascular risk.

Dr. Giannarelli points out that the patients in their study died in New York early in the pandemic, before vaccines were available. “They were unvaccinated and likely had little immunity against initial viral strains.”

Dr. Hotez says that when COVID-19 first emerged, many in the medical and scientific communities thought it would closely resemble the original SARS viral infection, which was primarily a respiratory pathogen.

“But it became pretty clear early on this virus was causing a lot of cardiovascular and thromboembolic disease,” he says. “This study provides an insight into the mechanisms involved here.”
 

Affecting more than lungs

Dr. Hotez pointed out that a recent study reported a 5% increase in cardiovascular deaths during the years 2020-2022, compared with before the pandemic.

“Those peaks of cardiovascular deaths corresponded with specific waves of COVID – the first happening at the time of the initial wave with the original virus and second during the Delta wave. So, there’s no question that this virus is contributing to excess cardiovascular mortality, and this paper appears to explain the mechanism.”

Dr. Hotez pointed out that the new findings suggest the cardiovascular risk may be prolonged well after the acute infection resolves.

“In long COVID, a lot of people focus on the neurological effects – brain fog and depression. But cardiac insufficiency and other cardiovascular events can also be considered another element of long COVID,” he said.

Dr. Giannarelli says her group is now studying whether patients with long COVID have virus in their coronary arteries. She points out that the current studies were a result of a team effort between experts in cardiovascular disease and virology and infectious disease. “We need to collaborate more like this to understand better the impact of viral infection in patients and the clinical manifestations,” she said.

Dr. Hotez says he believes these new findings will have implications for the future.

“COVID hasn’t gone away. The numbers have been going up again steadily in the U.S. in the last few months. There are still a significant number of hospitalizations,” he said.

While it would be unwieldy to ask for a cardiology consult for every COVID patient, he acknowledged, “there is probably a subset of people – possibly those of older age and who have had a severe case of COVID – who we suspect are now going to be more prone to cardiovascular disease because of having COVID.

“We should be vigilant in looking for cardiovascular disease in these patients,” Dr. Hotez said, “and perhaps be a bit more aggressive about controlling their cardiovascular risk factors.”

The study was funded by the U.S. National Institutes of Health, the American Heart Association, and the Chan Zuckerberg Initiative.

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

New evidence shows for the first time that the virus that causes COVID directly infects atherosclerotic plaques in the coronary arteries, producing a persistent inflammatory response.

The findings may not only explain the link between COVID and the increased risk of cardiovascular events but mark a starting point for new therapeutic approaches.

“Our study shows there is persistence of viral debris in the artery,” senior investigator Chiara Giannarelli, MD, associate professor of medicine and pathology at NYU Langone Health, New York, said in an interview. “There is an important inflammatory response. We can now look at ways to control this inflammation,” she said.

Dr. Giannarelli says COVID is more than a respiratory virus and that it can affect the whole body. “Our study shows a remarkable ability of the virus to hijack the immune system,” she points out. “Our findings may explain how that happens.”

Dr. Giannarelli says it’s important for doctors and patients to be aware of an increased cardiovascular risk after a SARS-CoV-2 infection and to pay extra attention to traditional risk factors, such as blood pressure and cholesterol.

“This study showing that severe acute respiratory syndrome coronavirus directly infects coronary artery plaques, producing inflammatory substances, really joins the dots and helps our understanding on why we’re seeing so much heart disease in COVID patients,” Peter Hotez, MD, professor of molecular virology and microbiology at Baylor College of Medicine, Houston, said in an interview.

Asked whether this direct infection of vascular plaques was unique to SARS-CoV-2 or whether this may also occur with other viruses, both Dr. Giannarelli and Dr. Hotez said they believe this may be a specific COVID effect.

“I wouldn’t say it is likely that other viruses infect coronary arteries in this way, but I suppose it is possible,” Dr. Giannarelli said.

Dr. Hotez pointed out that other viruses can cause inflammation in the heart, such as myocarditis. “But I can’t think of another virus that stimulates the sequence of events in coronary artery inflammation like we’re seeing here.”

Dr. Giannarelli noted that influenza is also associated with an increased risk of cardiovascular events, but there has been no evidence to date that it directly affects coronary arteries.

Dr. Hotez added that the increased risk of cardiovascular events with influenza has also been reported to be prolonged after the acute infection. “These new findings with SARS-CoV-2 could stimulate a redoubling of efforts to look at this possibility with influenza,” he suggested.
 

Heart disease after COVID

In a recent article published online in Nature Cardiovascular Research, Dr. Giannarelli and colleagues analyzed human autopsy tissue samples from coronary arterial walls of patients who had died from COVID in the early stages of the pandemic in New York.

They found an accumulation of viral RNA in atherosclerotic plaques in the coronary arteries, which was particularly concentrated in lipid-rich macrophage foam cells present within the plaques.

“Our data conclusively demonstrate that severe acute respiratory syndrome coronavirus is capable of infecting and replicating in macrophages within the coronary vasculature,” the researchers report.

The virus preferentially replicates in foam cells, in comparison with other macrophages, they add, suggesting that these cells might act as a reservoir of viral debris in atherosclerotic plaque.

“We have shown that the virus is targeting lipid-rich macrophages in atherosclerotic lesions. This is the first time this has been shown, and we think this is a very important finding,” Dr. Giannarelli said in an interview.

“We also found that the virus persists in these foam cells that could be responsible for long-term, low-grade inflammation in the vasculature that could contribute to the long-term cardiovascular manifestations in patients who have recovered from COVID,” she said.
 

Viral reservoirs

Macrophages residing in vascular tissue can undergo self-renewal and can remain in the tissue for many years, the investigators point out. They suggest that these macrophages may act as viral reservoirs of SARS-CoV-2 RNA in atherosclerotic plaques.

Using an ex vivo model, the researchers also found that atherosclerotic tissue could be directly infected by the virus. And just as was seen in cultured macrophages and foam cells, infection of vascular tissue triggered an inflammatory response. That response induced the secretion of key proatherogenic cytokines, such as interleukin-6 and interleukin-1 beta, which have been implicated in the pathogenesis of atherosclerosis and in an increased risk of cardiovascular events.

“Considering that plaque inflammation promotes disease progression and contributes to plaque rupture, our results provide a molecular basis for how infection of coronary lesions can contribute to the acute cardiovascular manifestations of COVID-19, such as myocardial infarction,” the researchers report.

Another interesting finding was a higher accumulation of viral RNA in the coronary vasculature of the three patients with acute ischemic cardiovascular manifestations, which they say adds to evidence that infection may increase cardiovascular risk.

Dr. Giannarelli points out that the patients in their study died in New York early in the pandemic, before vaccines were available. “They were unvaccinated and likely had little immunity against initial viral strains.”

Dr. Hotez says that when COVID-19 first emerged, many in the medical and scientific communities thought it would closely resemble the original SARS viral infection, which was primarily a respiratory pathogen.

“But it became pretty clear early on this virus was causing a lot of cardiovascular and thromboembolic disease,” he says. “This study provides an insight into the mechanisms involved here.”
 

Affecting more than lungs

Dr. Hotez pointed out that a recent study reported a 5% increase in cardiovascular deaths during the years 2020-2022, compared with before the pandemic.

“Those peaks of cardiovascular deaths corresponded with specific waves of COVID – the first happening at the time of the initial wave with the original virus and second during the Delta wave. So, there’s no question that this virus is contributing to excess cardiovascular mortality, and this paper appears to explain the mechanism.”

Dr. Hotez pointed out that the new findings suggest the cardiovascular risk may be prolonged well after the acute infection resolves.

“In long COVID, a lot of people focus on the neurological effects – brain fog and depression. But cardiac insufficiency and other cardiovascular events can also be considered another element of long COVID,” he said.

Dr. Giannarelli says her group is now studying whether patients with long COVID have virus in their coronary arteries. She points out that the current studies were a result of a team effort between experts in cardiovascular disease and virology and infectious disease. “We need to collaborate more like this to understand better the impact of viral infection in patients and the clinical manifestations,” she said.

Dr. Hotez says he believes these new findings will have implications for the future.

“COVID hasn’t gone away. The numbers have been going up again steadily in the U.S. in the last few months. There are still a significant number of hospitalizations,” he said.

While it would be unwieldy to ask for a cardiology consult for every COVID patient, he acknowledged, “there is probably a subset of people – possibly those of older age and who have had a severe case of COVID – who we suspect are now going to be more prone to cardiovascular disease because of having COVID.

“We should be vigilant in looking for cardiovascular disease in these patients,” Dr. Hotez said, “and perhaps be a bit more aggressive about controlling their cardiovascular risk factors.”

The study was funded by the U.S. National Institutes of Health, the American Heart Association, and the Chan Zuckerberg Initiative.

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

TOPLINE:

Half of kids with COVID-19 become noninfectious 3 days after testing positive, whether they were vaccinated or not, according to a new study. The findings indicate that return-to-school policies for infected children may not need to differ on the basis of vaccine or booster status.

METHODOLOGY:

• The study looked at 76 children, both vaccinated and unvaccinated, aged 7-18 years who had tested positive for COVID-19. 
• Researchers performed nasal swabs every other day for 10 days, sending the swab to a lab to be tested for cytopathic effect (CPE), or cell death, an indicator of infectivity.
• They took pictures of the lab cultures to look for signs of CPE starting at 6 days after the test, which corresponds to the 2nd day after testing positive.
• If CPE characteristics were present in at least 30% of images, children were considered infectious.

TAKEAWAY:

• By day 3, half of study participants were noninfectious, independent of whether they had been vaccinated.
• By day 5, less than 25% of children were infectious, regardless of vaccination status.
• Among vaccinated children, the duration of infectivity was similar for children who received a booster and for those who had not.
• The authors state that these results are consistent with those of a study in adults with the Omicron variant, which found no association between vaccination status and infectivity duration.

IN PRACTICE:

“Our findings suggest that current policies requiring isolation for 5 days after a positive test might be appropriate, as the majority of children were not infectious by day 5. Additionally, return-to-school policies may not need to discriminate by vaccine or booster status,” the authors wrote. 

SOURCE:

The study was led by Neeraj Sood, PhD, of the University of Southern California in Los Angeles, and was published in JAMA Pediatrics.

LIMITATIONS:

The sample size was small, and the authors identified the potential for nonresponse bias. The research did not include data from children who didn’t receive a test. CPE is the standard for estimating infectivity, but it can still carry inaccuracies.

DISCLOSURES:

The authors report no disclosures. The study was funded by RF Catalytic Capital.

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

TOPLINE:

Half of kids with COVID-19 become noninfectious 3 days after testing positive, whether they were vaccinated or not, according to a new study. The findings indicate that return-to-school policies for infected children may not need to differ on the basis of vaccine or booster status.

METHODOLOGY:

• The study looked at 76 children, both vaccinated and unvaccinated, aged 7-18 years who had tested positive for COVID-19. 
• Researchers performed nasal swabs every other day for 10 days, sending the swab to a lab to be tested for cytopathic effect (CPE), or cell death, an indicator of infectivity.
• They took pictures of the lab cultures to look for signs of CPE starting at 6 days after the test, which corresponds to the 2nd day after testing positive.
• If CPE characteristics were present in at least 30% of images, children were considered infectious.

TAKEAWAY:

• By day 3, half of study participants were noninfectious, independent of whether they had been vaccinated.
• By day 5, less than 25% of children were infectious, regardless of vaccination status.
• Among vaccinated children, the duration of infectivity was similar for children who received a booster and for those who had not.
• The authors state that these results are consistent with those of a study in adults with the Omicron variant, which found no association between vaccination status and infectivity duration.

IN PRACTICE:

“Our findings suggest that current policies requiring isolation for 5 days after a positive test might be appropriate, as the majority of children were not infectious by day 5. Additionally, return-to-school policies may not need to discriminate by vaccine or booster status,” the authors wrote. 

SOURCE:

The study was led by Neeraj Sood, PhD, of the University of Southern California in Los Angeles, and was published in JAMA Pediatrics.

LIMITATIONS:

The sample size was small, and the authors identified the potential for nonresponse bias. The research did not include data from children who didn’t receive a test. CPE is the standard for estimating infectivity, but it can still carry inaccuracies.

DISCLOSURES:

The authors report no disclosures. The study was funded by RF Catalytic Capital.

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

TOPLINE:

Half of kids with COVID-19 become noninfectious 3 days after testing positive, whether they were vaccinated or not, according to a new study. The findings indicate that return-to-school policies for infected children may not need to differ on the basis of vaccine or booster status.

METHODOLOGY:

• The study looked at 76 children, both vaccinated and unvaccinated, aged 7-18 years who had tested positive for COVID-19. 
• Researchers performed nasal swabs every other day for 10 days, sending the swab to a lab to be tested for cytopathic effect (CPE), or cell death, an indicator of infectivity.
• They took pictures of the lab cultures to look for signs of CPE starting at 6 days after the test, which corresponds to the 2nd day after testing positive.
• If CPE characteristics were present in at least 30% of images, children were considered infectious.

TAKEAWAY:

• By day 3, half of study participants were noninfectious, independent of whether they had been vaccinated.
• By day 5, less than 25% of children were infectious, regardless of vaccination status.
• Among vaccinated children, the duration of infectivity was similar for children who received a booster and for those who had not.
• The authors state that these results are consistent with those of a study in adults with the Omicron variant, which found no association between vaccination status and infectivity duration.

IN PRACTICE:

“Our findings suggest that current policies requiring isolation for 5 days after a positive test might be appropriate, as the majority of children were not infectious by day 5. Additionally, return-to-school policies may not need to discriminate by vaccine or booster status,” the authors wrote. 

SOURCE:

The study was led by Neeraj Sood, PhD, of the University of Southern California in Los Angeles, and was published in JAMA Pediatrics.

LIMITATIONS:

The sample size was small, and the authors identified the potential for nonresponse bias. The research did not include data from children who didn’t receive a test. CPE is the standard for estimating infectivity, but it can still carry inaccuracies.

DISCLOSURES:

The authors report no disclosures. The study was funded by RF Catalytic Capital.

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

SARS-CoV-2 infection is linked in men with increased incidence of urinary retention, urinary tract infection (UTI), and blood in the urine, a new study finds.

Authors of the study, led by Alex Qinyang Liu, of S.H. Ho Urology Centre, at The Chinese University of Hong Kong, highlighted the clinical implications.

“Clinicians should be aware of the significantly higher incidence of LUTS [lower urinary tract symptoms] complications with COVID-19 in this patient group and understand that these urological manifestations can occur regardless of COVID-19 severity,” the authors wrote.

Findings were published online in the Journal of Internal Medicine.

“This is the largest study demonstrating the detrimental urological effects of SARS-CoV-2 infection,” the authors wrote. They explained that current literature has included only small case series and observational studies assessing the connection between COVID-19 and male LUTS.
 

Nearly 18,000 patients in study

Included in this study were all male patients who used the public health care system in Hong Kong who received alpha-blocker monotherapy for LUTS from 2021 to 2022. After propensity score matching, 17,986 patients were included. Half had polymerase chain reaction–confirmed SARS-CoV-2 infection (n = 8,993).

The retrospective study compared urologic outcomes, including male benign prostatic hyperplasia (BPH) complications, and changes in medical treatment in the two groups. They compared male patients with SARS-CoV-2 infection who were taking baseline alpha blocker monotherapy for LUTS with a control group who had no SARS-CoV-2 infection.

They found that, compared with controls, the SARS-CoV-2–infected group had significantly higher incidence of retention of urine (4.55% vs. 0.86%, P < .001), hematuria (1.36% vs. 0.41%, P < .001), clinical UTI (4.31% vs. 1.49%, P < .001), culture-proven bacteriuria (9.02% vs. 1.97%, P < .001), and addition of 5-alpha reductase inhibitors (0.50% vs. 0.02%, P < .001).
 

Similar side effects even with asymptomatic infection

The researchers pointed out that similar incidence of retention of urine, hematuria, and addition of medication were seen even when patients had asymptomatic infection.

They added that their findings have biological plausibility because the coexpression of the proteins ACE2 and TMPRSS2 in the prostate makes it a target for SARS-CoV-2, which leads to inflammation and may help explain the primary outcomes.

“Given the high infectivity and unprecedented scale of the COVID-19 pandemic, these urological symptoms and complications represent a significant clinical burden that clinicians and urologists should be aware of,” the authors wrote.

The authors noted that the prevalence of BPH and LUTS rises with age and are among the most common urologic conditions affecting older men. “Incidentally, male patients of advanced age are also more significantly affected by COVID-19.”

The authors declare no relevant financial relationships.

SARS-CoV-2 infection is linked in men with increased incidence of urinary retention, urinary tract infection (UTI), and blood in the urine, a new study finds.

Authors of the study, led by Alex Qinyang Liu, of S.H. Ho Urology Centre, at The Chinese University of Hong Kong, highlighted the clinical implications.

“Clinicians should be aware of the significantly higher incidence of LUTS [lower urinary tract symptoms] complications with COVID-19 in this patient group and understand that these urological manifestations can occur regardless of COVID-19 severity,” the authors wrote.

Findings were published online in the Journal of Internal Medicine.

“This is the largest study demonstrating the detrimental urological effects of SARS-CoV-2 infection,” the authors wrote. They explained that current literature has included only small case series and observational studies assessing the connection between COVID-19 and male LUTS.
 

Nearly 18,000 patients in study

Included in this study were all male patients who used the public health care system in Hong Kong who received alpha-blocker monotherapy for LUTS from 2021 to 2022. After propensity score matching, 17,986 patients were included. Half had polymerase chain reaction–confirmed SARS-CoV-2 infection (n = 8,993).

The retrospective study compared urologic outcomes, including male benign prostatic hyperplasia (BPH) complications, and changes in medical treatment in the two groups. They compared male patients with SARS-CoV-2 infection who were taking baseline alpha blocker monotherapy for LUTS with a control group who had no SARS-CoV-2 infection.

They found that, compared with controls, the SARS-CoV-2–infected group had significantly higher incidence of retention of urine (4.55% vs. 0.86%, P < .001), hematuria (1.36% vs. 0.41%, P < .001), clinical UTI (4.31% vs. 1.49%, P < .001), culture-proven bacteriuria (9.02% vs. 1.97%, P < .001), and addition of 5-alpha reductase inhibitors (0.50% vs. 0.02%, P < .001).
 

Similar side effects even with asymptomatic infection

The researchers pointed out that similar incidence of retention of urine, hematuria, and addition of medication were seen even when patients had asymptomatic infection.

They added that their findings have biological plausibility because the coexpression of the proteins ACE2 and TMPRSS2 in the prostate makes it a target for SARS-CoV-2, which leads to inflammation and may help explain the primary outcomes.

“Given the high infectivity and unprecedented scale of the COVID-19 pandemic, these urological symptoms and complications represent a significant clinical burden that clinicians and urologists should be aware of,” the authors wrote.

The authors noted that the prevalence of BPH and LUTS rises with age and are among the most common urologic conditions affecting older men. “Incidentally, male patients of advanced age are also more significantly affected by COVID-19.”

The authors declare no relevant financial relationships.

SARS-CoV-2 infection is linked in men with increased incidence of urinary retention, urinary tract infection (UTI), and blood in the urine, a new study finds.

Authors of the study, led by Alex Qinyang Liu, of S.H. Ho Urology Centre, at The Chinese University of Hong Kong, highlighted the clinical implications.

“Clinicians should be aware of the significantly higher incidence of LUTS [lower urinary tract symptoms] complications with COVID-19 in this patient group and understand that these urological manifestations can occur regardless of COVID-19 severity,” the authors wrote.

Findings were published online in the Journal of Internal Medicine.

“This is the largest study demonstrating the detrimental urological effects of SARS-CoV-2 infection,” the authors wrote. They explained that current literature has included only small case series and observational studies assessing the connection between COVID-19 and male LUTS.
 

Nearly 18,000 patients in study

Included in this study were all male patients who used the public health care system in Hong Kong who received alpha-blocker monotherapy for LUTS from 2021 to 2022. After propensity score matching, 17,986 patients were included. Half had polymerase chain reaction–confirmed SARS-CoV-2 infection (n = 8,993).

The retrospective study compared urologic outcomes, including male benign prostatic hyperplasia (BPH) complications, and changes in medical treatment in the two groups. They compared male patients with SARS-CoV-2 infection who were taking baseline alpha blocker monotherapy for LUTS with a control group who had no SARS-CoV-2 infection.

They found that, compared with controls, the SARS-CoV-2–infected group had significantly higher incidence of retention of urine (4.55% vs. 0.86%, P < .001), hematuria (1.36% vs. 0.41%, P < .001), clinical UTI (4.31% vs. 1.49%, P < .001), culture-proven bacteriuria (9.02% vs. 1.97%, P < .001), and addition of 5-alpha reductase inhibitors (0.50% vs. 0.02%, P < .001).
 

Similar side effects even with asymptomatic infection

The researchers pointed out that similar incidence of retention of urine, hematuria, and addition of medication were seen even when patients had asymptomatic infection.

They added that their findings have biological plausibility because the coexpression of the proteins ACE2 and TMPRSS2 in the prostate makes it a target for SARS-CoV-2, which leads to inflammation and may help explain the primary outcomes.

“Given the high infectivity and unprecedented scale of the COVID-19 pandemic, these urological symptoms and complications represent a significant clinical burden that clinicians and urologists should be aware of,” the authors wrote.

The authors noted that the prevalence of BPH and LUTS rises with age and are among the most common urologic conditions affecting older men. “Incidentally, male patients of advanced age are also more significantly affected by COVID-19.”

The authors declare no relevant financial relationships.

Nirmatrelvir-ritonavir (Paxlovid) is associated with a reduced risk for death or hospitalization in the most extremely vulnerable patients with COVID-19, new research suggests.

In a cohort study from British Columbia that included nearly 7,000 patients with COVID-19, nirmatrelvir-ritonavir was associated with a 2.5% reduction in risk for death or emergency hospitalization in clinically extremely vulnerable (CEV) patients who were severely immunocompromised. No significant benefit was observed in patients who were not immunocompromised.

“This finding could help substantially limit unnecessary use of nirmatrelvir and ritonavir in older, otherwise healthy individuals,” lead author Colin R. Dormuth, ScD, associate professor of anesthesiology, pharmacology, and therapeutics at the University of British Columbia, Vancouver, told this news organization. “Another finding that was surprising and might help place the role of nirmatrelvir and ritonavir in context is that even in severely immunocompromised individuals who did not take [the drug], the risk of death or hospitalization with COVID-19 was less than 4% in our study population.”

The study was published online in JAMA Network Open.
 

Who benefits?

The investigators analyzed medical records for 6,866 patients in British Columbia (median age, 70 years; 57% women) who presented between Feb. 1, 2022, and Feb. 3, 2023. Eligible patients belonged to one of four higher-risk groups who received priority for COVID-19 vaccination.

Two groups included CEV patients who were severely (CEV1) or moderately (CEV2) immunocompromised. The CEV3 group was not immunocompromised but had medical conditions associated with a high risk for complications from COVID-19. A fourth expanded eligibility (EXEL) group included higher-risk patients who were not in one of the other groups, such as unvaccinated patients older than age 70 years.

The investigators matched treated patients to untreated patients in the same vulnerability group according to age, sex, and month of infection. The primary outcome was death from any cause or emergency hospitalization with COVID-19 within 28 days.

Treatment with nirmatrelvir-ritonavir was associated with statistically significant relative reductions in the primary outcome, compared with no treatment, for patients in the CEV1 (risk difference, −2.5%) and CEV2 (RD, −1.7%) groups. In the CEV3 group, the RD of −1.3% was not statistically significant. In the EXEL group, treatment was associated with a higher risk for the primary outcome (RD, 1.0%), but the result was not statistically significant.

The results were “robust across sex and older vs. younger age,” the authors note. “No reduction in the primary outcome was observed in lower-risk individuals, including those aged 70 years or older without serious comorbidities.”

The combination of nirmatrelvir-ritonavir was approved for use in Canada based on interim efficacy and safety data from the Evaluation of Inhibition for COVID-19 in High-Risk Patients (EPIC-HR) trial, said Dr. Dormuth.

British Columbia’s eligibility criteria for nirmatrelvir-ritonavir coverage differ substantially from the criteria for participants in the EPIC-HR trial, he noted. Those patients were unvaccinated, had no natural immunity from a previous COVID-19 infection, and were infected with COVID-19 variants that were different from those now circulating. The current study was prompted by the need to look at a broader population of individuals in British Columbia with varying risks of complications from COVID-19 infection.

Before the study, a common view was that patients aged 70 and older would benefit from the drug, said Dr. Dormuth. “Our study, which accounted for medical conditions related to an individual’s vulnerability to complications, showed that older age on its own was not a reason to use nirmatrelvir and ritonavir once relevant medical conditions were taken into consideration.”

The researchers are working on a study to identify with greater specificity which comorbid conditions are most associated with nirmatrelvir-ritonavir effectiveness, he added. “It could be that a relatively small number of conditions can be used to identify most individuals who would benefit from the drug.”
 

‘Signal toward benefit’

Commenting on the findings for this news organization, Abhijit Duggal, MD, vice chair of critical care at the Cleveland Clinic, who was not involved in this study, said, “I’m always very wary when we look at observational data and we start saying the effectiveness is not really as high as was seen in other studies. We are seeing an effect with all these studies that seems to be in the right direction.

“Having said that,” he added, “is the effect going to be potentially more in patients at higher risk? Absolutely. I think these postmarket studies are really showing that after vaccination, if someone does get infected, this is a secondary option available to us that can prevent progression of the disease, which would likely be more severe in immunocompromised patients.”

Dr. Duggal was a coinvestigator on a recent study of more than 68,000 patients that showed that nirmatrelvir-ritonavir or molnupiravir was associated with reductions in mortality and hospitalization in nonhospitalized patients infected with the Omicron variant, regardless of age, race and ethnicity, virus strain, vaccination status, previous infection status, or coexisting conditions.

“In all groups, there was a signal toward benefit,” said Dr. Duggal. “These studies tell us that these drugs do remain valid options. But their use needs to be discussed on a case-by-case basis with patients we feel are deteriorating or at a higher risk because of underlying disease processes.”

The study was supported by funding from the British Columbia Ministry of Health. Dr. Dormuth and Dr. Duggal report no relevant financial relationships.

A version of this article appeared on Medscape.com.

Nirmatrelvir-ritonavir (Paxlovid) is associated with a reduced risk for death or hospitalization in the most extremely vulnerable patients with COVID-19, new research suggests.

In a cohort study from British Columbia that included nearly 7,000 patients with COVID-19, nirmatrelvir-ritonavir was associated with a 2.5% reduction in risk for death or emergency hospitalization in clinically extremely vulnerable (CEV) patients who were severely immunocompromised. No significant benefit was observed in patients who were not immunocompromised.

“This finding could help substantially limit unnecessary use of nirmatrelvir and ritonavir in older, otherwise healthy individuals,” lead author Colin R. Dormuth, ScD, associate professor of anesthesiology, pharmacology, and therapeutics at the University of British Columbia, Vancouver, told this news organization. “Another finding that was surprising and might help place the role of nirmatrelvir and ritonavir in context is that even in severely immunocompromised individuals who did not take [the drug], the risk of death or hospitalization with COVID-19 was less than 4% in our study population.”

The study was published online in JAMA Network Open.
 

Who benefits?

The investigators analyzed medical records for 6,866 patients in British Columbia (median age, 70 years; 57% women) who presented between Feb. 1, 2022, and Feb. 3, 2023. Eligible patients belonged to one of four higher-risk groups who received priority for COVID-19 vaccination.

Two groups included CEV patients who were severely (CEV1) or moderately (CEV2) immunocompromised. The CEV3 group was not immunocompromised but had medical conditions associated with a high risk for complications from COVID-19. A fourth expanded eligibility (EXEL) group included higher-risk patients who were not in one of the other groups, such as unvaccinated patients older than age 70 years.

The investigators matched treated patients to untreated patients in the same vulnerability group according to age, sex, and month of infection. The primary outcome was death from any cause or emergency hospitalization with COVID-19 within 28 days.

Treatment with nirmatrelvir-ritonavir was associated with statistically significant relative reductions in the primary outcome, compared with no treatment, for patients in the CEV1 (risk difference, −2.5%) and CEV2 (RD, −1.7%) groups. In the CEV3 group, the RD of −1.3% was not statistically significant. In the EXEL group, treatment was associated with a higher risk for the primary outcome (RD, 1.0%), but the result was not statistically significant.

The results were “robust across sex and older vs. younger age,” the authors note. “No reduction in the primary outcome was observed in lower-risk individuals, including those aged 70 years or older without serious comorbidities.”

The combination of nirmatrelvir-ritonavir was approved for use in Canada based on interim efficacy and safety data from the Evaluation of Inhibition for COVID-19 in High-Risk Patients (EPIC-HR) trial, said Dr. Dormuth.

British Columbia’s eligibility criteria for nirmatrelvir-ritonavir coverage differ substantially from the criteria for participants in the EPIC-HR trial, he noted. Those patients were unvaccinated, had no natural immunity from a previous COVID-19 infection, and were infected with COVID-19 variants that were different from those now circulating. The current study was prompted by the need to look at a broader population of individuals in British Columbia with varying risks of complications from COVID-19 infection.

Before the study, a common view was that patients aged 70 and older would benefit from the drug, said Dr. Dormuth. “Our study, which accounted for medical conditions related to an individual’s vulnerability to complications, showed that older age on its own was not a reason to use nirmatrelvir and ritonavir once relevant medical conditions were taken into consideration.”

The researchers are working on a study to identify with greater specificity which comorbid conditions are most associated with nirmatrelvir-ritonavir effectiveness, he added. “It could be that a relatively small number of conditions can be used to identify most individuals who would benefit from the drug.”
 

‘Signal toward benefit’

Commenting on the findings for this news organization, Abhijit Duggal, MD, vice chair of critical care at the Cleveland Clinic, who was not involved in this study, said, “I’m always very wary when we look at observational data and we start saying the effectiveness is not really as high as was seen in other studies. We are seeing an effect with all these studies that seems to be in the right direction.

“Having said that,” he added, “is the effect going to be potentially more in patients at higher risk? Absolutely. I think these postmarket studies are really showing that after vaccination, if someone does get infected, this is a secondary option available to us that can prevent progression of the disease, which would likely be more severe in immunocompromised patients.”

Dr. Duggal was a coinvestigator on a recent study of more than 68,000 patients that showed that nirmatrelvir-ritonavir or molnupiravir was associated with reductions in mortality and hospitalization in nonhospitalized patients infected with the Omicron variant, regardless of age, race and ethnicity, virus strain, vaccination status, previous infection status, or coexisting conditions.

“In all groups, there was a signal toward benefit,” said Dr. Duggal. “These studies tell us that these drugs do remain valid options. But their use needs to be discussed on a case-by-case basis with patients we feel are deteriorating or at a higher risk because of underlying disease processes.”

The study was supported by funding from the British Columbia Ministry of Health. Dr. Dormuth and Dr. Duggal report no relevant financial relationships.

A version of this article appeared on Medscape.com.

Nirmatrelvir-ritonavir (Paxlovid) is associated with a reduced risk for death or hospitalization in the most extremely vulnerable patients with COVID-19, new research suggests.

In a cohort study from British Columbia that included nearly 7,000 patients with COVID-19, nirmatrelvir-ritonavir was associated with a 2.5% reduction in risk for death or emergency hospitalization in clinically extremely vulnerable (CEV) patients who were severely immunocompromised. No significant benefit was observed in patients who were not immunocompromised.

“This finding could help substantially limit unnecessary use of nirmatrelvir and ritonavir in older, otherwise healthy individuals,” lead author Colin R. Dormuth, ScD, associate professor of anesthesiology, pharmacology, and therapeutics at the University of British Columbia, Vancouver, told this news organization. “Another finding that was surprising and might help place the role of nirmatrelvir and ritonavir in context is that even in severely immunocompromised individuals who did not take [the drug], the risk of death or hospitalization with COVID-19 was less than 4% in our study population.”

The study was published online in JAMA Network Open.
 

Who benefits?

The investigators analyzed medical records for 6,866 patients in British Columbia (median age, 70 years; 57% women) who presented between Feb. 1, 2022, and Feb. 3, 2023. Eligible patients belonged to one of four higher-risk groups who received priority for COVID-19 vaccination.

Two groups included CEV patients who were severely (CEV1) or moderately (CEV2) immunocompromised. The CEV3 group was not immunocompromised but had medical conditions associated with a high risk for complications from COVID-19. A fourth expanded eligibility (EXEL) group included higher-risk patients who were not in one of the other groups, such as unvaccinated patients older than age 70 years.

The investigators matched treated patients to untreated patients in the same vulnerability group according to age, sex, and month of infection. The primary outcome was death from any cause or emergency hospitalization with COVID-19 within 28 days.

Treatment with nirmatrelvir-ritonavir was associated with statistically significant relative reductions in the primary outcome, compared with no treatment, for patients in the CEV1 (risk difference, −2.5%) and CEV2 (RD, −1.7%) groups. In the CEV3 group, the RD of −1.3% was not statistically significant. In the EXEL group, treatment was associated with a higher risk for the primary outcome (RD, 1.0%), but the result was not statistically significant.

The results were “robust across sex and older vs. younger age,” the authors note. “No reduction in the primary outcome was observed in lower-risk individuals, including those aged 70 years or older without serious comorbidities.”

The combination of nirmatrelvir-ritonavir was approved for use in Canada based on interim efficacy and safety data from the Evaluation of Inhibition for COVID-19 in High-Risk Patients (EPIC-HR) trial, said Dr. Dormuth.

British Columbia’s eligibility criteria for nirmatrelvir-ritonavir coverage differ substantially from the criteria for participants in the EPIC-HR trial, he noted. Those patients were unvaccinated, had no natural immunity from a previous COVID-19 infection, and were infected with COVID-19 variants that were different from those now circulating. The current study was prompted by the need to look at a broader population of individuals in British Columbia with varying risks of complications from COVID-19 infection.

Before the study, a common view was that patients aged 70 and older would benefit from the drug, said Dr. Dormuth. “Our study, which accounted for medical conditions related to an individual’s vulnerability to complications, showed that older age on its own was not a reason to use nirmatrelvir and ritonavir once relevant medical conditions were taken into consideration.”

The researchers are working on a study to identify with greater specificity which comorbid conditions are most associated with nirmatrelvir-ritonavir effectiveness, he added. “It could be that a relatively small number of conditions can be used to identify most individuals who would benefit from the drug.”
 

‘Signal toward benefit’

Commenting on the findings for this news organization, Abhijit Duggal, MD, vice chair of critical care at the Cleveland Clinic, who was not involved in this study, said, “I’m always very wary when we look at observational data and we start saying the effectiveness is not really as high as was seen in other studies. We are seeing an effect with all these studies that seems to be in the right direction.

“Having said that,” he added, “is the effect going to be potentially more in patients at higher risk? Absolutely. I think these postmarket studies are really showing that after vaccination, if someone does get infected, this is a secondary option available to us that can prevent progression of the disease, which would likely be more severe in immunocompromised patients.”

Dr. Duggal was a coinvestigator on a recent study of more than 68,000 patients that showed that nirmatrelvir-ritonavir or molnupiravir was associated with reductions in mortality and hospitalization in nonhospitalized patients infected with the Omicron variant, regardless of age, race and ethnicity, virus strain, vaccination status, previous infection status, or coexisting conditions.

“In all groups, there was a signal toward benefit,” said Dr. Duggal. “These studies tell us that these drugs do remain valid options. But their use needs to be discussed on a case-by-case basis with patients we feel are deteriorating or at a higher risk because of underlying disease processes.”

The study was supported by funding from the British Columbia Ministry of Health. Dr. Dormuth and Dr. Duggal report no relevant financial relationships.

A version of this article appeared on Medscape.com.

This transcript has been edited for clarity.

Michelle L. O’Donoghue, MD, MPH: I’m here in Amsterdam at the European Society of Cardiology (ESC) Congress 2023. Joining me for a great discussion is my friend Dr. Pam Taub, who is a cardiologist and a professor of medicine at UC San Diego. She has a particular interest in postural orthostatic tachycardia syndrome (POTS), so that’s what we’ll be talking about today.

Thanks for joining me, Pam. When we think about POTS, for those who are not familiar with the term, what does it actually mean and how do you diagnose it?
 

No tilt table required

Pam R. Taub, MD: As you said, it’s postural orthostatic tachycardia syndrome. What that means is when somebody stands up, they have an elevation in their heart rate that is usually 30 points from when they’re lying down. That’s typically associated with symptoms such as lightheadedness, dizziness, and cognitive difficulties such as brain fog. The diagnosis can be made by tilt-table testing, but it can also be made in the office with simple orthostats.

In my clinic, I have people lie down for 3-5 minutes. At the end of that period, you get a heart rate and blood pressure. Then you have them stand up for 3-5 minutes and then get heart rate and blood pressure, and you look at the differences. If the heart rate goes up by 30 points – so maybe they’re 80 beats/min when they’re lying down and when they stand up, it goes to 110 beats/min  – that’s POTS, so very objective criteria. Typically, these people don’t have what we call orthostatic hypotension, where there is a significant decrease in the blood pressure. It’s more a heart rate issue.

Dr. O’Donoghue: How symptomatically do they usually present?

Dr. Taub: It’s a spectrum. Some people have mild symptoms. After they’re in the upright position for maybe 10 minutes, they get symptoms. There are some people who, when they go from a lying to standing position, they’re extremely symptomatic and can’t really do any activities. There are some people that are even wheelchair-bound because the symptoms are so debilitating. There’s a wide spectrum.

Dr. O’Donoghue: There has been more discussion, I feel like, about the rising prevalence of POTS as a diagnosis, and in particular since the COVID pandemic. What’s our understanding of the relationship between COVID and POTS and what the mechanism might be?

Dr. Taub: We’ve known that POTS can be triggered by a viral infection. Before COVID, we knew that in certain individuals that we think have an underlying genetic predisposition, usually some autoimmune substrate, when they get certain types of infections, whether it’s influenza or mononucleosis, they get POTS.

Typically, when they get an infection, they start getting deconditioned. They don’t feel well, so they’re on bed rest. When they get long periods of bed rest, when they start to become active, they start to have overactivation of their sympathetic nervous system, and they have a large amount of cardiovascular deconditioning. It’s a cycle that is often triggered after an infection.

A huge increase of POTS has been seen after COVID-19 because we had so many people exposed to this virus. With COVID-19, there is a period where people don’t feel great and they are getting bed rest, so they’re getting deconditioned. We’ve seen so many patients referred for post-COVID POTS and also long COVID or the post-acute sequelae of COVID-19, where POTS is a part of that presentation.

Female sex and autoimmune conditions

Dr. O’Donoghue: We know that POTS seems to disproportionately affect women. Is that understood? Is it thought that that’s related to the perhaps the autoimmune component of that illness?

Dr. Taub: Yes. The theory is because women tend to have more autoimmune conditions, that’s why they’re more predisposed. There’s a large amount of genetic susceptibility. For instance, we know that there’s an association between POTS and conditions like Ehlers-Danlos syndrome and between POTS and mast cell activation. Some of those conditions are more prevalent in women as well.

Dr. O’Donoghue: I feel like many physicians don’t know how to manage POTS, and they’re actually a little fearful perhaps to take it on. Fortunately, there have been a growing number of POTS clinics with specialists that focus on that area. For the average practitioner who maybe can’t refer to a POTS clinic, how should they approach that?

Dr. Taub: The first thing is its diagnosis. When someone tells you that they have symptoms of orthostatic intolerance – so, activities that involve standing – you need to first have that on your differential diagnosis. You can make the diagnosis in the office with orthostats. You don’t need a tilt table. It’s sometimes helpful if you’re unsure about the diagnosis, but you can make the diagnosis.

Many times, you’re finding people that have very mild symptoms. You can treat that with some good lifestyle recommendations, such as increased hydration, increasing salt in their diet, and compression. And the exercise component is really important.

Many people with POTS are told to go exercise, go for a run, or go for a walk. That’s incorrect, because these people have symptoms when they’re in the upright position. The type of exercise they need to do initially is exercise in the lying or seated position – so exercises like rowing or a seated bike, and strength training. As they start to feel better, then they can do upright exercise.

You should never tell a person that has POTS to just initially start with upright exercise, because they’re going to feel so much worse and then they’re never going to want to exercise. It’s really important to give them the right exercise recommendations. I find that for many of these mild cases, if they do the right exercise and engage in the right lifestyle strategies, they get better.

Compression wear and drug therapy

Dr. O’Donoghue: When it comes to compression stockings, do you usually start with a particular length?

Dr. Taub: It’s interesting. There are many different compression stockings, medical grade. Through patients with POTS, I’ve gotten feedback on certain types of athletic wear that have built-in compression, and that’s a little bit easier for people to wear every day because they can do their errands and it doesn’t look like they’re wearing medical-grade compression stockings.

Basically, I’ve collected all the different recommendations that patients say help, and I give them a list. The medical-grade compression stockings sometimes are very challenging to put on, and sometimes people just need light compression or even just socks. Any kind of compression is going to help.

Dr. O’Donoghue: That’s a great tip, because I know there are many patients who refuse to wear the compression stockings. If there’s a fashionable alternative, that’s always good to reach for.

Dr. Taub: Another thing that patients have told me is that abdominal compression is also very helpful. There are many commercially available abdominal compression options, like shapewear. Many patients with POTS use that and that helps, too.

Dr. O’Donoghue: Good. For those patients with POTS that is refractory to the measures you’ve already discussed, what are the next steps after that?

Dr. Taub: Pharmacotherapy is very synergistic with lifestyle, and there are many different pharmacotherapy options. One of the first things that you want to think about is lowering that heart rate. The reason people feel horrible is because their heart rate is usually very high when they’re upright. If they’re upright for long periods of time and they’re having very high heart rates, they’re going to get really tired because it’s like they’re exercising for hours when they’re upright.

Heart rate lowering is the cornerstone of therapy. Traditionally, we’ve used beta-blockers for heart rate lowering. The problem is they also lower blood pressure. They can also cause fatigue, so not the ideal agent for patients with POTS.

One of the clinical trials that I led was with a drug called ivabradine, which selectively works on the SA node and decreases heart rate without affecting blood pressure. What’s really elegant about ivabradine is it has a more potent effect when the heart rate is higher. When the patient is standing, it’s going to have a more potent effect on heart rate lowering. It’s really well tolerated in patients with POTS. In our study, we showed an improvement in quality of life metrics. That’s one of the first-line drugs that I use for patients with POTS.

The other thing is some of them will also have a concomitant lowering of blood pressure. You can think about medications that increase blood pressure, like midodrine, fludrocortisone, and droxidopa. Sometimes that combination of a heart rate-lowering medication and a medication that increases blood pressure really works well.

Dr. O’Donoghue: That’s very helpful. I think that those kinds of practical tips are the ones that practitioners really want to reach for, because they need to have that algorithm in their mind to take on this condition. Thanks again for walking us through that.

I think it’s a very interesting space, and there’s more that we’re going to be learning over the next few years as we further flesh out these post-COVID cases and what we learn from that as well.

Dr. Taub: There are many clinical trials now starting in POTS, so it’s exciting.

Dr. O’Donoghue: Absolutely. Thank you again for joining me today. Signing off, this is Dr Michelle O’Donoghue.
 

Dr. O’Donoghue is a cardiologist at Brigham and Women’s Hospital and senior investigator with the TIMI Study Group. A strong believer in evidence-based medicine, she relishes discussions about the published literature. A native Canadian, Dr. O’Donoghue loves spending time outdoors with her family but admits with shame that she’s never strapped on hockey skates. She disclosed ties with Amgen, AstraZeneca Pharmaceuticals LP, CVS Minute Clinic, Eisai, GlaxoSmithKline, Janssen Pharmaceuticals, Merck, Novartis, and The Medicines Company. Dr. Taub is professor of Medicine, University of California San Diego Health, La Jolla. She disclosed ties with Amgen, Bayer, Boehringer Ingelheim, Medtronic, Merck, Novartis, Novo Nordisk, and Sanofi.

A version of this article appeared on Medscape.com.

This transcript has been edited for clarity.

Michelle L. O’Donoghue, MD, MPH: I’m here in Amsterdam at the European Society of Cardiology (ESC) Congress 2023. Joining me for a great discussion is my friend Dr. Pam Taub, who is a cardiologist and a professor of medicine at UC San Diego. She has a particular interest in postural orthostatic tachycardia syndrome (POTS), so that’s what we’ll be talking about today.

Thanks for joining me, Pam. When we think about POTS, for those who are not familiar with the term, what does it actually mean and how do you diagnose it?
 

No tilt table required

Pam R. Taub, MD: As you said, it’s postural orthostatic tachycardia syndrome. What that means is when somebody stands up, they have an elevation in their heart rate that is usually 30 points from when they’re lying down. That’s typically associated with symptoms such as lightheadedness, dizziness, and cognitive difficulties such as brain fog. The diagnosis can be made by tilt-table testing, but it can also be made in the office with simple orthostats.

In my clinic, I have people lie down for 3-5 minutes. At the end of that period, you get a heart rate and blood pressure. Then you have them stand up for 3-5 minutes and then get heart rate and blood pressure, and you look at the differences. If the heart rate goes up by 30 points – so maybe they’re 80 beats/min when they’re lying down and when they stand up, it goes to 110 beats/min  – that’s POTS, so very objective criteria. Typically, these people don’t have what we call orthostatic hypotension, where there is a significant decrease in the blood pressure. It’s more a heart rate issue.

Dr. O’Donoghue: How symptomatically do they usually present?

Dr. Taub: It’s a spectrum. Some people have mild symptoms. After they’re in the upright position for maybe 10 minutes, they get symptoms. There are some people who, when they go from a lying to standing position, they’re extremely symptomatic and can’t really do any activities. There are some people that are even wheelchair-bound because the symptoms are so debilitating. There’s a wide spectrum.

Dr. O’Donoghue: There has been more discussion, I feel like, about the rising prevalence of POTS as a diagnosis, and in particular since the COVID pandemic. What’s our understanding of the relationship between COVID and POTS and what the mechanism might be?

Dr. Taub: We’ve known that POTS can be triggered by a viral infection. Before COVID, we knew that in certain individuals that we think have an underlying genetic predisposition, usually some autoimmune substrate, when they get certain types of infections, whether it’s influenza or mononucleosis, they get POTS.

Typically, when they get an infection, they start getting deconditioned. They don’t feel well, so they’re on bed rest. When they get long periods of bed rest, when they start to become active, they start to have overactivation of their sympathetic nervous system, and they have a large amount of cardiovascular deconditioning. It’s a cycle that is often triggered after an infection.

A huge increase of POTS has been seen after COVID-19 because we had so many people exposed to this virus. With COVID-19, there is a period where people don’t feel great and they are getting bed rest, so they’re getting deconditioned. We’ve seen so many patients referred for post-COVID POTS and also long COVID or the post-acute sequelae of COVID-19, where POTS is a part of that presentation.

Female sex and autoimmune conditions

Dr. O’Donoghue: We know that POTS seems to disproportionately affect women. Is that understood? Is it thought that that’s related to the perhaps the autoimmune component of that illness?

Dr. Taub: Yes. The theory is because women tend to have more autoimmune conditions, that’s why they’re more predisposed. There’s a large amount of genetic susceptibility. For instance, we know that there’s an association between POTS and conditions like Ehlers-Danlos syndrome and between POTS and mast cell activation. Some of those conditions are more prevalent in women as well.

Dr. O’Donoghue: I feel like many physicians don’t know how to manage POTS, and they’re actually a little fearful perhaps to take it on. Fortunately, there have been a growing number of POTS clinics with specialists that focus on that area. For the average practitioner who maybe can’t refer to a POTS clinic, how should they approach that?

Dr. Taub: The first thing is its diagnosis. When someone tells you that they have symptoms of orthostatic intolerance – so, activities that involve standing – you need to first have that on your differential diagnosis. You can make the diagnosis in the office with orthostats. You don’t need a tilt table. It’s sometimes helpful if you’re unsure about the diagnosis, but you can make the diagnosis.

Many times, you’re finding people that have very mild symptoms. You can treat that with some good lifestyle recommendations, such as increased hydration, increasing salt in their diet, and compression. And the exercise component is really important.

Many people with POTS are told to go exercise, go for a run, or go for a walk. That’s incorrect, because these people have symptoms when they’re in the upright position. The type of exercise they need to do initially is exercise in the lying or seated position – so exercises like rowing or a seated bike, and strength training. As they start to feel better, then they can do upright exercise.

You should never tell a person that has POTS to just initially start with upright exercise, because they’re going to feel so much worse and then they’re never going to want to exercise. It’s really important to give them the right exercise recommendations. I find that for many of these mild cases, if they do the right exercise and engage in the right lifestyle strategies, they get better.

Compression wear and drug therapy

Dr. O’Donoghue: When it comes to compression stockings, do you usually start with a particular length?

Dr. Taub: It’s interesting. There are many different compression stockings, medical grade. Through patients with POTS, I’ve gotten feedback on certain types of athletic wear that have built-in compression, and that’s a little bit easier for people to wear every day because they can do their errands and it doesn’t look like they’re wearing medical-grade compression stockings.

Basically, I’ve collected all the different recommendations that patients say help, and I give them a list. The medical-grade compression stockings sometimes are very challenging to put on, and sometimes people just need light compression or even just socks. Any kind of compression is going to help.

Dr. O’Donoghue: That’s a great tip, because I know there are many patients who refuse to wear the compression stockings. If there’s a fashionable alternative, that’s always good to reach for.

Dr. Taub: Another thing that patients have told me is that abdominal compression is also very helpful. There are many commercially available abdominal compression options, like shapewear. Many patients with POTS use that and that helps, too.

Dr. O’Donoghue: Good. For those patients with POTS that is refractory to the measures you’ve already discussed, what are the next steps after that?

Dr. Taub: Pharmacotherapy is very synergistic with lifestyle, and there are many different pharmacotherapy options. One of the first things that you want to think about is lowering that heart rate. The reason people feel horrible is because their heart rate is usually very high when they’re upright. If they’re upright for long periods of time and they’re having very high heart rates, they’re going to get really tired because it’s like they’re exercising for hours when they’re upright.

Heart rate lowering is the cornerstone of therapy. Traditionally, we’ve used beta-blockers for heart rate lowering. The problem is they also lower blood pressure. They can also cause fatigue, so not the ideal agent for patients with POTS.

One of the clinical trials that I led was with a drug called ivabradine, which selectively works on the SA node and decreases heart rate without affecting blood pressure. What’s really elegant about ivabradine is it has a more potent effect when the heart rate is higher. When the patient is standing, it’s going to have a more potent effect on heart rate lowering. It’s really well tolerated in patients with POTS. In our study, we showed an improvement in quality of life metrics. That’s one of the first-line drugs that I use for patients with POTS.

The other thing is some of them will also have a concomitant lowering of blood pressure. You can think about medications that increase blood pressure, like midodrine, fludrocortisone, and droxidopa. Sometimes that combination of a heart rate-lowering medication and a medication that increases blood pressure really works well.

Dr. O’Donoghue: That’s very helpful. I think that those kinds of practical tips are the ones that practitioners really want to reach for, because they need to have that algorithm in their mind to take on this condition. Thanks again for walking us through that.

I think it’s a very interesting space, and there’s more that we’re going to be learning over the next few years as we further flesh out these post-COVID cases and what we learn from that as well.

Dr. Taub: There are many clinical trials now starting in POTS, so it’s exciting.

Dr. O’Donoghue: Absolutely. Thank you again for joining me today. Signing off, this is Dr Michelle O’Donoghue.
 

Dr. O’Donoghue is a cardiologist at Brigham and Women’s Hospital and senior investigator with the TIMI Study Group. A strong believer in evidence-based medicine, she relishes discussions about the published literature. A native Canadian, Dr. O’Donoghue loves spending time outdoors with her family but admits with shame that she’s never strapped on hockey skates. She disclosed ties with Amgen, AstraZeneca Pharmaceuticals LP, CVS Minute Clinic, Eisai, GlaxoSmithKline, Janssen Pharmaceuticals, Merck, Novartis, and The Medicines Company. Dr. Taub is professor of Medicine, University of California San Diego Health, La Jolla. She disclosed ties with Amgen, Bayer, Boehringer Ingelheim, Medtronic, Merck, Novartis, Novo Nordisk, and Sanofi.

A version of this article appeared on Medscape.com.

This transcript has been edited for clarity.

Michelle L. O’Donoghue, MD, MPH: I’m here in Amsterdam at the European Society of Cardiology (ESC) Congress 2023. Joining me for a great discussion is my friend Dr. Pam Taub, who is a cardiologist and a professor of medicine at UC San Diego. She has a particular interest in postural orthostatic tachycardia syndrome (POTS), so that’s what we’ll be talking about today.

Thanks for joining me, Pam. When we think about POTS, for those who are not familiar with the term, what does it actually mean and how do you diagnose it?
 

No tilt table required

Pam R. Taub, MD: As you said, it’s postural orthostatic tachycardia syndrome. What that means is when somebody stands up, they have an elevation in their heart rate that is usually 30 points from when they’re lying down. That’s typically associated with symptoms such as lightheadedness, dizziness, and cognitive difficulties such as brain fog. The diagnosis can be made by tilt-table testing, but it can also be made in the office with simple orthostats.

In my clinic, I have people lie down for 3-5 minutes. At the end of that period, you get a heart rate and blood pressure. Then you have them stand up for 3-5 minutes and then get heart rate and blood pressure, and you look at the differences. If the heart rate goes up by 30 points – so maybe they’re 80 beats/min when they’re lying down and when they stand up, it goes to 110 beats/min  – that’s POTS, so very objective criteria. Typically, these people don’t have what we call orthostatic hypotension, where there is a significant decrease in the blood pressure. It’s more a heart rate issue.

Dr. O’Donoghue: How symptomatically do they usually present?

Dr. Taub: It’s a spectrum. Some people have mild symptoms. After they’re in the upright position for maybe 10 minutes, they get symptoms. There are some people who, when they go from a lying to standing position, they’re extremely symptomatic and can’t really do any activities. There are some people that are even wheelchair-bound because the symptoms are so debilitating. There’s a wide spectrum.

Dr. O’Donoghue: There has been more discussion, I feel like, about the rising prevalence of POTS as a diagnosis, and in particular since the COVID pandemic. What’s our understanding of the relationship between COVID and POTS and what the mechanism might be?

Dr. Taub: We’ve known that POTS can be triggered by a viral infection. Before COVID, we knew that in certain individuals that we think have an underlying genetic predisposition, usually some autoimmune substrate, when they get certain types of infections, whether it’s influenza or mononucleosis, they get POTS.

Typically, when they get an infection, they start getting deconditioned. They don’t feel well, so they’re on bed rest. When they get long periods of bed rest, when they start to become active, they start to have overactivation of their sympathetic nervous system, and they have a large amount of cardiovascular deconditioning. It’s a cycle that is often triggered after an infection.

A huge increase of POTS has been seen after COVID-19 because we had so many people exposed to this virus. With COVID-19, there is a period where people don’t feel great and they are getting bed rest, so they’re getting deconditioned. We’ve seen so many patients referred for post-COVID POTS and also long COVID or the post-acute sequelae of COVID-19, where POTS is a part of that presentation.

Female sex and autoimmune conditions

Dr. O’Donoghue: We know that POTS seems to disproportionately affect women. Is that understood? Is it thought that that’s related to the perhaps the autoimmune component of that illness?

Dr. Taub: Yes. The theory is because women tend to have more autoimmune conditions, that’s why they’re more predisposed. There’s a large amount of genetic susceptibility. For instance, we know that there’s an association between POTS and conditions like Ehlers-Danlos syndrome and between POTS and mast cell activation. Some of those conditions are more prevalent in women as well.

Dr. O’Donoghue: I feel like many physicians don’t know how to manage POTS, and they’re actually a little fearful perhaps to take it on. Fortunately, there have been a growing number of POTS clinics with specialists that focus on that area. For the average practitioner who maybe can’t refer to a POTS clinic, how should they approach that?

Dr. Taub: The first thing is its diagnosis. When someone tells you that they have symptoms of orthostatic intolerance – so, activities that involve standing – you need to first have that on your differential diagnosis. You can make the diagnosis in the office with orthostats. You don’t need a tilt table. It’s sometimes helpful if you’re unsure about the diagnosis, but you can make the diagnosis.

Many times, you’re finding people that have very mild symptoms. You can treat that with some good lifestyle recommendations, such as increased hydration, increasing salt in their diet, and compression. And the exercise component is really important.

Many people with POTS are told to go exercise, go for a run, or go for a walk. That’s incorrect, because these people have symptoms when they’re in the upright position. The type of exercise they need to do initially is exercise in the lying or seated position – so exercises like rowing or a seated bike, and strength training. As they start to feel better, then they can do upright exercise.

You should never tell a person that has POTS to just initially start with upright exercise, because they’re going to feel so much worse and then they’re never going to want to exercise. It’s really important to give them the right exercise recommendations. I find that for many of these mild cases, if they do the right exercise and engage in the right lifestyle strategies, they get better.

Compression wear and drug therapy

Dr. O’Donoghue: When it comes to compression stockings, do you usually start with a particular length?

Dr. Taub: It’s interesting. There are many different compression stockings, medical grade. Through patients with POTS, I’ve gotten feedback on certain types of athletic wear that have built-in compression, and that’s a little bit easier for people to wear every day because they can do their errands and it doesn’t look like they’re wearing medical-grade compression stockings.

Basically, I’ve collected all the different recommendations that patients say help, and I give them a list. The medical-grade compression stockings sometimes are very challenging to put on, and sometimes people just need light compression or even just socks. Any kind of compression is going to help.

Dr. O’Donoghue: That’s a great tip, because I know there are many patients who refuse to wear the compression stockings. If there’s a fashionable alternative, that’s always good to reach for.

Dr. Taub: Another thing that patients have told me is that abdominal compression is also very helpful. There are many commercially available abdominal compression options, like shapewear. Many patients with POTS use that and that helps, too.

Dr. O’Donoghue: Good. For those patients with POTS that is refractory to the measures you’ve already discussed, what are the next steps after that?

Dr. Taub: Pharmacotherapy is very synergistic with lifestyle, and there are many different pharmacotherapy options. One of the first things that you want to think about is lowering that heart rate. The reason people feel horrible is because their heart rate is usually very high when they’re upright. If they’re upright for long periods of time and they’re having very high heart rates, they’re going to get really tired because it’s like they’re exercising for hours when they’re upright.

Heart rate lowering is the cornerstone of therapy. Traditionally, we’ve used beta-blockers for heart rate lowering. The problem is they also lower blood pressure. They can also cause fatigue, so not the ideal agent for patients with POTS.

One of the clinical trials that I led was with a drug called ivabradine, which selectively works on the SA node and decreases heart rate without affecting blood pressure. What’s really elegant about ivabradine is it has a more potent effect when the heart rate is higher. When the patient is standing, it’s going to have a more potent effect on heart rate lowering. It’s really well tolerated in patients with POTS. In our study, we showed an improvement in quality of life metrics. That’s one of the first-line drugs that I use for patients with POTS.

The other thing is some of them will also have a concomitant lowering of blood pressure. You can think about medications that increase blood pressure, like midodrine, fludrocortisone, and droxidopa. Sometimes that combination of a heart rate-lowering medication and a medication that increases blood pressure really works well.

Dr. O’Donoghue: That’s very helpful. I think that those kinds of practical tips are the ones that practitioners really want to reach for, because they need to have that algorithm in their mind to take on this condition. Thanks again for walking us through that.

I think it’s a very interesting space, and there’s more that we’re going to be learning over the next few years as we further flesh out these post-COVID cases and what we learn from that as well.

Dr. Taub: There are many clinical trials now starting in POTS, so it’s exciting.

Dr. O’Donoghue: Absolutely. Thank you again for joining me today. Signing off, this is Dr Michelle O’Donoghue.
 

Dr. O’Donoghue is a cardiologist at Brigham and Women’s Hospital and senior investigator with the TIMI Study Group. A strong believer in evidence-based medicine, she relishes discussions about the published literature. A native Canadian, Dr. O’Donoghue loves spending time outdoors with her family but admits with shame that she’s never strapped on hockey skates. She disclosed ties with Amgen, AstraZeneca Pharmaceuticals LP, CVS Minute Clinic, Eisai, GlaxoSmithKline, Janssen Pharmaceuticals, Merck, Novartis, and The Medicines Company. Dr. Taub is professor of Medicine, University of California San Diego Health, La Jolla. She disclosed ties with Amgen, Bayer, Boehringer Ingelheim, Medtronic, Merck, Novartis, Novo Nordisk, and Sanofi.

A version of this article appeared on Medscape.com.