Catecholaminergic polymorphic ventricular tachycardia is a familial cardiac 
arrhythmia that is related to RYR2 or CASQ2 gene mutation. It occurs in patients 
with structurally normal heart and causes exercise-emotion triggered syncope and 
sudden cardiac death. We present a 13 year-old girl with recurrent episodes of 
exercise-related syncope and prior history of sudden death in a first degree 
relative.