Unusual Forms of Ventricular Tachycardia

An overview of four unusual types of ventricular tachycardia is presented: arrhythmogenic right ventricular dysplasia, bundle branch reentry, and idiopathic left and right ventricular tachycardias. In most patients with these tachycardias, severe structural heart disease is absent. The prognosis of patients is dependent on the clinical manifestations produced by the arrhythmia and the presence and type of structural heart disease. We describe their clinical, electrocardiographic, and electrophysiologic features. Based on the most common clinical courses and tachycardia mechanisms, current management options are discussed.