Cycle length-dependent left and right bundle branch block and left anterior hemiblock.
D000368:Aged; D002037:Bundle-Branch Block / Q000503:physiopathology* / Q000628:therapy; D004562:Electrocardiography; D006329:Heart Conduction System / Q000503:physiopathology; D006339:Heart Rate; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial; D011674:Pulse; D013997:Time Factors