Wang Y, Chen L, Wang J, et al. - Via performing a retrospective analysis, researchers compared the electrocardiogram changes between coronavirus disease 2019 (COVID‐19) critically severe and severe patients. Relative to severe patients, the critically ill patients were more frequently male and had higher incidence of stroke, elevated cardiac troponin I (cTnI), N‐terminal of the prohormone brain natriuretic peptide (NT‐proBNP), d‐dimer, high‐sensitivity C‐reactive protein (hs‐CRP), hyperkalemia, and hypocalcemia. Multivariate logistic regression analysis revealed independent value of elevated cTnI and NT‐proBNP as risk factors of ST‐T changes. Atrial fibrillation was observed in independent correlation with elevated NT‐proBNP and age. The independent risk factors of in‐hospital death and ventilator use were sinus tachycardia and atrial fibrillation.