SA, it’s very bad for the heart:
July 27, 2020
Outcomes of Cardiovascular Magnetic Resonance Imaging in Patients Recently Recovered From Coronavirus Disease 2019 (COVID-19)
https://jamanetwork.com/journals/jamacardiology/fullarticle/2768916
– Findings: In this cohort study including 100 patients recently recovered from COVID-19 identified from a COVID-19 test center, cardiac magnetic resonance imaging revealed cardiac involvement in 78 patients (78%) and ongoing myocardial inflammation in 60 patients (60%), which was independent of preexisting conditions, severity and overall course of the acute illness, and the time from the original diagnosis.
That’s empirical; this article in Nature goes into the theory:
https://www.nature.com/articles/s41569-020-0413-9
– “COVID-19 itself can also induce myocardial injury, arrhythmia, acute coronary syndrome and venous thromboembolism.”