title: Bilateral bundle branch block: its recognition and significance.
mesh_terms: D000200:Action Potentials; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D013997:Time Factors