Fulminant myocarditis presenting with wide complex tachycardia.

Fulminant myocarditis is an uncommon diagnosis characterized by cardiac failure preceded by symptoms of a viral illness. Presentation can frequently mimic acute myocardial infarction. The electrocardiographic changes are frequently nonspecific, but include ST segment elevation and T wave changes, as well as conduction abnormalities. We report the case of a patient with fulminant myocarditis that presented with sinus rhythm, a conduction system abnormality, and severe ST segment elevation mimicking ventricular tachycardia. Myocarditis should be considered in young persons with unexplained heart failure and similar electrocardiographic abnormalities.