Complex synchronized pacemaker (Atricor) malfunction.
D000368:Aged; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D002037:Bundle-Branch Block / Q000150:complications*; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D008297:Male; D010138:Pacemaker, Artificial / Q000009:adverse effects* / Q000295:instrumentation; D011674:Pulse