PMID: 3214224May 1, 1988Paper

Risk of complete auriculoventricular block and cardiological complications in patients with bifascicular block undergoing general surgery

Archivos del Instituto de Cardiología de México
D E García RubíE Dublan Ramírez

Abstract

26 patients with bifascicular block defined as complete right bundle branch block and left anterior block diagnosed electrocardiographically according to Medrano's criteria, were studied to evaluate the indication for preoperatory pacemaker insertion due to the risk of complete A/V block, other cardiac complications were recorded carefully. 7 patients underwent a prophylactic insertion, due to associated first degree A/V block in 4 cases and in 3 cases due to symptomatic bifascicular block. No instance of complete A/V block was found in the study. The most severe complication recorded was in a patient who presented a myocardial infarction complicated with ventricular Tachycardia. The risk of complete A/V block is low and only a small group of this patients should be considered for a preoperatory pacemaker insertion due to associated risk factors.

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