Heart Damage is Less Likely to Occur From Mild COVID-19 Infection

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Due to the little information available that specifically looks at this group of people and the effects on the heart, the study team had investigated 149 healthcare workers, recruited from

Participants with mild COVID-19 were identified from the COVIDsortium, a study in three London hospitals.

‘Mild COVID-19 infection may not cause lasting damage to the structure or function of the heart. However, it requires a lot more work to be done to investigate the short and long-term effects of COVID-19 on the heart and circulatory system.

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Effects of COVID-19 on Heart

The healthcare workers had undergone weekly samples of blood, saliva, and nasal swabs for 16 weeks. Six months after a mild infection, their heart structure, and function were examined by analyzing heart MRI scans of 74 healthcare workers with prior mild COVID-19. They were compared to the scans of 75 healthy age, sex, and ethnicity matched controls who had not previously been infected.

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No difference was found in the size or amount of muscle of the left ventricle (the main chamber of the heart responsible for pumping blood around the body) or its ability to pump blood out of the heart. The amount of inflammation and scarring in the heart and the elasticity of the aorta (important for blood to easily flow out of the heart) remained the same between the two groups.

Upon analysis of blood samples, no differences were found in the two markers of heart muscle damage ¡V troponin and NT-proBN, six months after mild COVID-19 infection.

“Disentangling the impact COVID-19 has on the heart has been a challenge. But we’re now at the stage of the pandemic where we can really start to get a grip on the longer-term implications COVID-19 has on the health of our heart and blood vessels. We’ve been able to capitalise on our incredible frontline staff who’ve been exposed to the virus this past year and we’re pleased to show that the majority of people who’ve had COVID-19 seem to not be at increased risk of developing future heart complications. We now need to focus our attention on the long term impact the virus has in those who’ve been hit hardest by the disease,” says Dr. Thomas Treibel (UCL Institute of Cardiovascular Science and Barts Health NHS Trust).

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The small abnormalities identified by MRI were not found more often in people who had mild COVID-19 when compared to those that have never had it. This suggests that these changes could have been caused by something other than coronavirus and they may not make any noticeable difference to the health of that person.

“Throughout the pandemic, BHF researchers have made progress investigating the short and long-term effects of COVID-19 on the heart and circulatory system. There’s still a lot more work to be done, but for now it seems the good news is that mild COVID-19 illness does not appear to be linked to lasting heart damage,” says Dr. Sonya Babu-Narayan, Associate Medical Director at the British Heart Foundation and consultant cardiologist.


Source: Medindia

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