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The Journal of Thoracic and Cardiovascular Surgery, Vol 80, 527-534, Copyright © 1980 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Comparison of standard aneurysmectomy and aneurysmectomy with directed endocardial resection for the treatment of recurrent sustained ventricular tachycardia

AH Harken, LN Horowitz and ME Josephson

Nineteen patients undergoing a standard aneurysmectomy for recurrent ventricular tachycardia are compared with 30 patients unergoing electrophysiologically directed endocardial excision and aneurysmectomy. The electrophysiologically nondirected and electrophysiologically directed groups were aneurysmectomy. The electrophysiologically nondirected and electrophysiologically directed groups were similar for age (56.8 versus 57.5 years), interval after myocardial infarction (26.2 versus 28.3 months), preoperative episodes of ventricular tachycardia (13.2 versus 19.7), cardiac index (2.95 versus 2.79 L/min/m2), left ventricular end-diastolic pressure (15.5 versus 18.2 torr), and ejection fraction (34 versus 28%). Operative mortality rate in the nondirected group was 42%, with all but one of the deaths resulting from uncontrolled postoperative ventricular tachycardia. In the nondirected group 78.9% (15/19) of patients had recurrent ventricular tachycardia postoperatively. The operative mortality rate in the electrophysiologically directed group was 6.7% (2/30), and both patients died of left ventricular failure. Three patients (10%) have ventricular tachycardia inducible with programmed stimulation. We conclude that standard left ventricular aneurysmectomy is not an effective operation for recurrent sustained ventricular tachycardia. Conversely, electrophysiologically directed endocardial excision characteristically controls the arrhythmia at an acceptable surgical risk.

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