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The Annals of Thoracic Surgery, Vol 57, 921-924, Copyright © 1994 by The Society of Thoracic Surgeons

ARTICLES

Surgical ablation of ventricular tachycardia secondary to congenital ventricular septal aneurysm

A Graffigna, G Minzioni, L Ressia and M Vigano
Istituto di Cardiochirurgia, Universita degli Studi di Pavia, Italy.

Three patients underwent surgical ablation for ventricular tachycardia resulting from an aneurysm of the membranous portion of the ventricular septum. Two patients had a definite history of cardiac murmur during infancy, and one of them was found at the time of operation to have a left-to-right shunt through the apex of the aneurysm. The earliest ventricular activation sites were located around the neck of the aneurysm and were ablated in 1 patient by encircling the endocardial ventriculotomy and by cryoablation in the remaining 2. After focus resection had been completed, aneurysm resection and ventricular septal reconstruction were performed. All patients were alive and free of ventricular tachycardia and did not need medication as of 61, 66, and 88 months postoperatively. Spontaneous closure of a ventricular septal defect may lead to the formation of an aneurysm in the ventricular septum that may sustain ventricular tachycardias. Such arrhythmias can be effectively treated using electrically guided surgical techniques.