[Idiopathic left ventricular tachycardia in infancy: long-term control with verapamil].

Idiopathic verapamil-responsive left ventricular tachycardia is an uncommon arrhythmia in childhood. Although this tachycardia is usually responsive to verapamil, non-pharmacologic therapy may be necessary in the long-term follow-up. We report a thirty-four month old child with incessant left ventricular tachycardia refractory to digoxin and amiodarone. The diagnosis was confirmed by electrophysiologic study. Intravenous verapamil successfully controlled the arrhythmia. On oral verapamil, the patient remains asymptomatic over a follow up period of 7 years and 10 months.