Relation of Left bundle branch block in type II diabetes mellitus with left ventricular systolic function and hemoglobin A1C

Abstract

SUMMARY The aim of the study was evaluation of left bundle branch block (LBBB) as a marker of cardiovascular involvement in diabetes mellitus (DM) patients by examining left ventricular systolic function and hemoglobin A 1c . Data on 25 DM patients with LBBB were compared with data on 25 DM patients without LBBB and 25 non-DM patients with LBBB. The mean age of patients in DM with LBBB, DM without LBBB, and non-DM with LBBB groups was 62.2±9.4, 62±6.3 and 63.6±8 years, respectively (p=NS). There were 72%, 65/4% and 50% of female patients, respectively (p=NS). Left ventricular ejection fraction in DM with LBBB was significantly lower than in DM without LBBB and non-DM with LBBB (32.8±10.8 vs. 58.9±7.7and 41±12; p<0.002). Left ventricular enddiastolic diameter was significantly higher in DM with LBBB than in DM without LBBB and non-DM with LBBB (61.6±7.1 vs. 50.6±3.7 and 58±10.1 mm;