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The echocardiographic left ventricular M-mode images on the first day, 10th day, and 17th day after admission. a The left ventricular diameter was enlarged, and the ejection fraction was decreased on first day of admission; b this figure shows edema of left ventricular wall and improvement of LVEF. c The last bedside echocardiography examination showing a normal LVEF and wall thickness. LVEF left ventricular ejection fraction
