title: Prophylactic permanent pacemakers for patients with chronic bundle branch block.
mesh_terms: D000368:Aged; D002037:Bundle-Branch Block / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D003645:Death, Sudden / Q000209:etiology; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006327:Heart Block / Q000209:etiology; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009461:Neurologic Manifestations; D010138:Pacemaker, Artificial