Abstract
A 54-year-old diabetic man presented to the hospital with shock and bradycardia. His initial estimated left ventricular ejection fraction (LVEF) was 15% and the electrocardiogram showed a junctional escape rhythm with a wide QRS complex and no P wave. Intensive supportive therapy was initiated after inserting a pacemaker and starting extracorporeal membrane oxygenation. A myocardial biopsy confirmed acute lymphocytic myocarditis with extensive myocyte necrosis, and cardiac transplantation was planned. However, the patient survived without transplantation after vigorous hemodynamic support for 2 weeks. After discharge, he had limited activity for 4 months due to dyspnea caused by a reduced systolic heart function (LVEF, 21%) with a junctional escaped beat. His systolic function recovered markedly 6 months after stopping the hemodynamic support, with the presence of a P wave and narrowed QRS complex. (Korean J Med 2015;89:439-443)
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