Abstract
A 43-year-old Caucasian male and avid runner was referred to our institution for evaluation after an episode of exercise-induced syncope. Treadmill testing was complicated by cardiac arrest at peak exercise with polymorphic ventricular tachycardia (Fig. 1) that was successfully cardioverted. Baseline transthoracic echocardiogram revealed no evidence of structural disease with normal myocardial contractility. Cardiac catheterization demonstrated an anomalous coronary artery arising from a single ostium in the right aortic sinus of Valsalva (Fig. 2), dividing into
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