Cardiac pacing.
D001145:Arrhythmias, Cardiac / Q000628:therapy*; D002037:Bundle-Branch Block / Q000628:therapy; D002304:Cardiac Pacing, Artificial; D004554:Electric Countershock / Q000295:instrumentation; D006327:Heart Block / Q000628:therapy; D006801:Humans; D009203:Myocardial Infarction / Q000628:therapy; D010138:Pacemaker, Artificial; D012804:Sick Sinus Syndrome / Q000628:therapy