Cardiac involvement in COVID-19: does echocardiography matter?
In the analysis of their patient series, the authors found no association between systolic dysfunction (left ventricular ejection fraction <50%) and a poor prognosis. These results led them to propose limiting echocardiography studies to patients with congestive heart failure, arrhythmias, electrocardiographic changes, or cardiomegaly.
In our opinion, the results provided should be analyzed with caution, as the study contains a small, single-center sample and the results contrast with those reported in previous articles on COVID-19 patients in intensive care units. In these studies, elevated biomarkers of myocardial injury and stress, such as cardiac troponin and the amino-terminal fraction of pro-brain natriuretic peptide, and a lower left ventricular ejection fraction were associated with a worse prognosis