Keywords: ECG, electrocardiogram; ECMO, extracorporeal membrane oxygenation; ICI, immune-checkpoint inhibitor; LV, left ventricular; LVEF, left ventricular ejection fraction; NT-proBNP, N-terminal pro–B-type natriuretic peptide; TTE, transthoracic echocardiogram; cardiogenic shock; hs-cTnT, high-sensitivity cardiac troponin T; immune-check point inhibitors; myocarditis.