title: Intermittent left bundle branch block-a case report.
mesh_terms: D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000209:etiology; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications; D011379:Prognosis