Alternating morphology ventricular tachycardia associated with stable coronary artery disease: A case report

Abstract

Bidirectional ventricular tachycardia (BVT) is part of the spectrum of polymorphic ventricular tachycardia (VT). This is a case report of a 59-year-old male with stable coronary artery disease and baseline normal left ventricular ejection fraction (LVEF) who was followed for high burden symptomatic monomorphic premature ventricular complexes (PVC). He was admitted for syncope. The ECG showed recurrent non-sustained alternating morphology and double cycle length VT runs associated with deterioration in LVEF but without coronary artery disease progression. The patient had a successful catheter ablation of two distinct left ventricular PVC focus. This is a rare ECG pattern of alternating morphology VT similar to a bidirectional VT.

Keywords: Alternating morphology ventricular tachycardia; Bidirectional ventricular tachycardia; Ischemic cardiomyopathy; Polymorphic ventricular tachycardia; Premature Ventricular Complex.