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Covid19 Long-term Impact On Heart’s Health Is Raising Fears

Covid-19 is taking a toll on the heart based on the two new studies from Germany which paint a saddening picture, raising the possibilities of long-term damage after people recover, even if their illness was not severe enough to require hospitalization. One study examined the cardiac MRIs of 100 people who had recovered from Covid-19 and compared them to heart images from 100 people who were similar but not infected with the virus. Their average age was 49 and two-thirds of the patients had recovered at home. More than two months later, infected patients were more likely to have troubling cardiac signs than people in the control group: 78 patients showed structural changes to their hearts, 76 had evidence of a biomarker signaling cardiac injury typically found after a heart attack, and 60 had signs of inflammation. These were relatively young, healthy patients who fell ill in the spring, Valentina Puntmann, who led the MRI study, pointed out in an interview. Many of them had just returned from ski vacations. None of them thought they had anything wrong with their hearts.  

“The fact that 78% of ‘recovered’ [patients] had evidence of ongoing heart involvement means that the heart is involved in a majority of patients, even if Covid-19 illness does not scream out with the classical heart symptoms, such as anginal chest pain,” she told STAT. She is a cardiologist at University Hospital Frankfurt. “In my view, the relatively clear onset of Covid-19 illness provides an opportunity to take proactive action and to look for heart involvement early.” The other study, which analyzed autopsy results from 39 people who died early in the pandemic and whose average age was 85, found high levels of the virus in the hearts of 24 patients.

“We see signs of viral replication in those that are heavily infected,” Dirk Westermann, a cardiologist at the University Heart and Vascular Centre in Hamburg, said in an interview. “We don’t know the long-term consequences of the changes in gene expression yet. I know from other diseases that it’s obviously not good to have that increased level of inflammation.”

Taken together, the two studies, published Monday in JAMA Cardiology, suggest that in many patients, Covid-19 could presage heart failure, a chronic, progressive condition in which the heart’s ability to pump blood throughout the body declines. It is too soon to say if the damage in patients recovering from Covid-19 is transient or permanent, but cardiologists are worried.

“These are two studies that both suggest that being infected with Covid-19 carries a high likelihood of having some involvement of the heart. If not answering questions, [they] prompt important questions about what the cardiac aftermath is,” said Matthew Tomey, a cardiologist and assistant professor of medicine at the Icahn School of Medicine at Mount Sinai Health System in New York. He was not involved in either study. “The question now is how long these changes persist,” he added. “Are these going to become chronic effects upon the heart or are these — we hope — temporary effects on cardiac function that will gradually improve over time?”

Since the pandemic began, people with underlying cardiovascular problems such as high blood pressure, coronary artery disease, or heart failure have been known to be at higher risk for infection and death. The connection between Covid-19 and blood clots emerged later, after doctors began connecting the pulmonary embolisms, strokes, and heart attacks they were seeing to the virus.

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