Outcomes of Cardiovascular Magnetic Resonance Imaging in Patients Recently Recovered From Coronavirus Disease 2019 COVID-19 Cardiology | JAMA Cardiology | JAMA Network
https://jamanetwork.com/journals/jamacardiology/fullarticle/2768916

>Key Points
>
>Question What are the cardiovascular effects in unselected patients with recent coronavirus disease 2019 (COVID-19)?
>
>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.
>
>Meaning These findings indicate the need for ongoing investigation of the long-term cardiovascular consequences of COVID-19.
>...

Myocarditis Wikipedia
https://en.wikipedia.org/wiki/Myocarditis

>Myocarditis, also known as inflammatory cardiomyopathy, is inflammation of the heart muscle.[1] Symptoms can include shortness of breath, chest pain, decreased ability to exercise, and an irregular heartbeat.[1] The duration of problems can vary from hours to months.[1] Complications may include heart failure due to dilated cardiomyopathy or cardiac arrest.