Introduction
The majority of idiopathic Purkinje-related ventricular tachycardias (VTs) are caused by reentrant mechanisms, and non-reentrant fascicular tachycardia (NRFT) is a rare form of idiopathic VTs in adults.1-3) It is crucial to distinguish NRFT from other idiopathic reentrant VTs for the accurate diagnosis as well as the effective treatment. However, there is no information about the electrophysiological studies and the treatment effect in the pediatric-onset NRFT. We herein report a pediatric case of refractory NRFT that was successfully treated by the catheter mapping and ablation.