Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) is a rhythm disorder of the ventricles of the heart that occurs in genetically predisposed individuals. Synonyms: Familial Polymorphic Ventricular Tachycardia (FPVT) Catecholamine-Induced Polymorphic Ventricular Tachycardia.