Ventricular tachycardia Effort-induced polymorphic ventricular tachycardia UMLS:C4025298 Polymorphic ventricular arrhythmias of varying morphologythat do not exist under resting conditions but appear only upon physical exercise or catecholamine administration. Exercise-induced polymorphic ventricular tachycardia Catecholaminergic polymorphic ventricular tachycardia HP:0004758