![]() Prevalence of clinical and subclinical myocarditis in competitive athletes with recent SARS-CoV-2 infection: Results from the Big Ten COVID-19 Cardiac Registry. The potential impact of COVID-19 virus on the heart and the circulatory system. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. ![]() This is much higher than the potential risk of heart inflammation after the COVID-19 vaccine. Notably, a 2021 study investigating the prevalence of myocarditis in competitive athletes after SARS-CoV-2 infection found that 2.3% had myocarditis. One 2021 study found that traces of SARS-CoV-2 were detected in the heart tissue of 60% of those that died from the infection. The virus may also infect the cardiac cells, which can contribute to heart damage. This can result in arrhythmia and possibly cause blood clots to form. ![]() A 2022 review indicates there is a link between arrhythmias, cardiomyopathy, heart attacks, and SARS-CoV-2 infection.Īccording to the National Heart, Lung, and Blood Institute, COVID-19 may cause excessive inflammation in the heart muscle that can disrupt electrical signals. However, the COVID-19 infection itself has the potential to affect the heart in multiple ways. A 2021 study notes that most cases of vaccine-related myocarditis in people younger than 21 were mild and resolved fast.Īdditionally, a 2022 systematic review and meta-analysis states that the overall risk of myopericarditis after a COVID-19 vaccine is low and the risk of heart inflammation is similar to that following vaccination against other diseases.Īdverse effects on the heart occurring due to the COVID-19 vaccine appear to be uncommon. But the abnormalities are less severe with vaccine-associated myocarditis. Reports also indicate that myocarditis developed more often after the second dose and usually within 1 week after vaccination.Īccording to research in a 2022 retrospective study, vaccine-associated myocarditis shows an injury pattern on an MRI similar to other causes of myocarditis. Symptoms of both conditions may include:Īccording to the CDC, cases of myocarditis reported to VAERS have occurred more often in adolescent and young adult males. Myocarditis involves inflammation of the heart muscle, and pericarditis is inflammation of the outer lining of the heart. A 2022 cohort study found that although the vaccines are safe, there are reports of myocarditis and pericarditis. Some evidence suggests that in the United States alone, roughly 3–6 million people have atrial fibrillation, and that number could reach 6–16 million by 2050.Īlthough considered uncommon, in a small percentage of people, the COVID-19 vaccine may adversely affect the heart. However, it is worth noting that the incidence and prevalence of atrial fibrillation is increasing globally. As such, this would suggest that the benefits of receiving the vaccine and having immunity to SARS-CoV-2 outweigh the potential risks. Some evidence notes that arrhythmias are a potentially life threatening complication of COVID-19. Further research is necessary to understand the correlation and why atrial fibrillation may occur in a small percentage of people after vaccination. The data indicates that there could be a possible association between the vaccines and atrial fibrillation, although the potential risk is still relatively low. The researchers found the percentage of all adverse events reported attributed to atrial fibrillation were as follows: Researchers reviewed the reports of atrial fibrillation after the use of the Pfizer, Moderna, AstraZeneca, Johnson & Johnson vaccines, along with the influenza vaccine. For example, a 2022 analysis reviewed information from the FDA Adverse Event Reporting System (FAERS) to search for incidents of atrial fibrillation, which is a type of arrhythmia. Still, some research indicates that the COVID-19 vaccine may cause arrhythmia as a side effect. Additionally, it is not always clear if an adverse condition is directly due to the vaccine. But as with any vaccine, some people may experience uncommon side effects. The Centers for Disease Control and Prevention (CDC) does not list cardiac arrhythmias as a possible side effect of the COVID-19 vaccine. Share on Pinterest Camilo Freedman/Bloomberg via Getty ImagesĪn arrhythmia involves an irregular heartbeat.
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