Idiopathic left ventricular tachycardia. Report of six cases

Background: Idiopathic ventricular tachycardia occurs in patients with no structural heart disease and may originate in left of right ventricle. Aim: To report our experience with this condition. Patients and methods: We report six patients (five male), aged 35 years old as a mean, with idiopathic left ventricular tachycardia that were subjected to conventional electrophysiological studies with atrial and ventricular stimulation programs and radiofrequency fulguration, between December 1993 and May 1996. Results: The mean lapse of disease was 24 months and five patients received antiarrhytmic medications previously. All tachycardias had a morphology with an image of right bundle branch block. Radiofrequency fulguration was done after obtaining a satisfactory pace mapping of at least 11 of the 12 superficial EKG derivations. The procedure was successful in five Patients and two had a relapse. One of the relapsed patients was successfully fulgurated again. Conclusions: Radiofrequency fulguration for idiopathic ventricular tachycardias is a safe and effective therapeutic procedure.