Postexertional Supraventricular Tachycardia in Children with Catecholaminergic Polymorphic Ventricular Tachycardia

Postexertional Supraventricular Tachycardia in Children with Catecholaminergic Polymorphic Ventricular Tachycardia

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Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a severe arrhythmia associated with sudden death in the young.It is caused by defective calcium handling in ventricular myocytes.The association of supraventricular tachycardia (SVT) with CPVT Window Cleaners is described in the literature, occurring in the lead-up to ventricular tachycardia during Conditioners exercise testing.

We describe three cases of SVT that were initiated in the recovery period of exercise testing in children with CPVT.