Catecholaminergic polymorphic ventricular tachycardia

**Definition:** Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a severe genetic arrhythmogenic disorder of childhood characterised by adrenergically-induced ventricular tachycardia (bidirectional ventricular tachycardia and, less frequently, supraventricular tachycardia and atrial fibrillation) manifesting as syncope and sudden death.