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  1. Apr 2020
    1. The first echocardiography showed a dilated left ventricle [left ventricular (LV) end‐diastolic diameter 56 mm], severe and diffuse LV hypokinesia (LV ejection fraction 34%). Three hours later, LV ejection fraction dropped to 25% and estimated cardiac index was 1.4 L/min/m2. Coronary angiography findings were unremarkable.