Endless loop tachycardias in DDD pacing are a well-known complication.
Irnich
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W
D005117:Cardiac Complexes, Premature / Q000517:prevention & control; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D010138:Pacemaker, Artificial; D013610:Tachycardia / Q000517:prevention & control / Q000628:therapy*