Different Faces of Cathecolaminergic Polymorphic Ventricular Tachycardia on Epinephrine QT Stress Testing
Hasan Kafalı
, Erkut Öztürk, Yakup Ergül
Keywords: Catecholaminergic polymorphic ventricular tachycardia, epinehrine stress test, supraventricular tachycardia
Abstract
Catecholaminergic polymorphic ventricular tachycardia (CPVT) is an inherited arrhythmic disorder characterized by exercise-induced ventricular arrhythmias and risk for sudden cardiac death. An exercise stress test is a standard method for diagnosis of CPVT, characterized by typical bidirectional polymorphic ventricular tachycardia. In patients who are not suitable for an exercise stress test, epinephrine stress testing (epinephrine challenge) can be used instead. There are a few reports in the literature discussing supraventricular tachycardias during exercise testing in pediatric CPVT patients. We present a 6-year-old boy who was admitted with syncopy. Epinehrine stress testing was performed according to the Ackerman protocol and revealed different types of tachycardias.