[Clinical and prognostic significance of left bundle branch block in patients with severe chronic heart failure].

Clinical and prognostic significance of left bundle branch block (LBBB) was investigated in 62 elderly patients with severe chronic heart failure (CHF). In comparison to 93 patients with CHF but without intra-ventricular blocks patients with LBBB demonstrated more frequently atrial fibrillation and left ventricular systolic dysfunction but less frequently chronic obstructive pulmonary disease, anemia and a history of myocardial infarction. Fourth-year follow-up showed that LBBB was not important predictor of survival in patients with severe CHF.