Giant-Cell Myocarditis Complicated by Heparin-induced Thrombocytopenia

概要

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Giant-cell myocarditis is a fatal autoimmune disorder that is often associated with other autoimmune diseases. We herein describe a case of giant-cell myocarditis complicated by heparin-induced thrombocytopenia (HIT). A 71-year-old woman was admitted to our hospital due to palpitations and ptosis. Echocardiography revealed hypokinesis in the left basal ventricular walls. Heart failure gradually developed, and the condition was complicated by HIT. The patient died of cardiogenic and septic shock caused by agranulocytosis. An autopsy showed giant-cell myocarditis. When severe left ventricular dysfunction due to an unknown cause is complicated by HIT, potential diagnoses of giant-cell and other types of autoimmune myocarditis should thus be investigated.