In fact, normalization of 50% of abnormal baseline ECGs and new abnormalities in 4% of ECGs may represent electrical variation over time in competitive athletes. A large increase in ECG changes during SARS-CoV-2 infection in the absence of pathological cardiac imaging findings suggestive of SARS-CoV-2 myocardial involvement was not seen. This study compared ECGs during SARS-CoV-2 infection with pre-infection baseline tracings among young competitive athletes with normal cardiac imaging. All aspects of this study were approved by the Mass General Brigham Institutional Review Board (Protocol #2020P002667). Categorical variables are presented as n (%). Continuous variables are presented as mean (SD) or median. Discrepancies in interpretation were settled by consensus between the 3 readers, and all abnormal ECGs were reviewed by the entire author team for final consensus. sport, institution) other than race and age. Each ECG was interpreted by 2 experienced readers (NM, BJP, TWC) who were blinded to athlete characteristics (i.e. ECG findings were defined as normal or abnormal per the International Criteria. Inclusion criteria for this study were: 1) athletes with confirmed SARS-CoV-2 infection, 2) an available baseline (pre-infection) ECG with no pre-existing cardiac condition, 3) an available ECG during or immediately after acute infection, and 4) no abnormalities on cardiac imaging (transthoracic echocardiography and/or cardiac magnetic resonance ) related to SARS-CoV-2 infection. A detailed description of the ORCCA study has been reported previously. ![]() ![]() This prospective observational cohort study included institutions from the National Collegiate Athletic Association (NCAA) who submitted data to the Outcomes Registry for Cardiac Conditions in Athletes (ORCCA) from Septemto May 21, 2021.
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