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[Idiopathic tachycardia originated in left ventricle]
M Viteri1, C Echeverría, C Bugueño
1Departamento de Enfermedades Cardiovasculares, Pontificia Universidad Católica de Chile.
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 antiarrhythmic 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.