Brady-tachyarrhythmia syndrome.
D001919:Bradycardia / Q000150:complications* / Q000628:therapy; D006327:Heart Block / Q000150:complications* / Q000628:therapy; D006801:Humans; D010138:Pacemaker, Artificial; D013614:Tachycardia, Paroxysmal / Q000150:complications* / Q000628:therapy