Long-term survival of patients with incomplete bundle-branch block complicating acute myocardial infarction.

British Heart Journal
E LichsteinK D Chadda

Abstract

Electrocardiograms and His bundle electrograms were reviewed in 28 patients with incomplete bilateral bundle-branch block complicating acute myocardial infarction. All had a His bundle electrogram at the time of pacemaker insertion; 10 had a second one. Of 23 patients with an initially abnormal HV interval (55 ms or greater), 15 died (65%), while only one died (20%) in the group of 5 with a normal HV interval. This difference is not statistically significant. Sequential His bundle electrograms were done in 6 of the 8 survivors with an initially abnormal HV interval, and 4 showed 10 to 15 ms decrease in HV interval. The disappearance of incomplete bilateral bundle-branch block occurred significantly more often in patients who survived (7 of 12) when compared with those who did not survive (2 of 16) (P less than 0.05). It is concluded that long-term survival is po-sible after incomplete bilateral bundle-branch block complicating acute myocardial infarction. The characteristics of the survivors include an initially normal HV interval, transient incomplete belateral bundle-branch block and a decreasing HV interval if it were initially abnormal.

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Citations

Aug 1, 1978·Australian and New Zealand Journal of Medicine·B P BaileyJ G Sloman
Aug 1, 1979·Australian and New Zealand Journal of Medicine·K S Woo, R M Norris
Nov 1, 1980·Progress in Cardiovascular Diseases·G R FischC Fisch
May 1, 1982·The American Journal of Cardiology·R N HauerD Durrer
Sep 1, 1985·Pacing and Clinical Electrophysiology : PACE·J D Fisher
Dec 1, 1976·British Heart Journal·L Rossi

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