Journal of the Hong Kong College of Cardiology

Volume 10 Number 4, October 2002
Abstract

Is Dynamic Atrial Overdrive Pacing Antiarrhythmic or Proarrhythmic: A Case Report

Ngai-Yin Chan, Miu-Fong Kwok, Chi-Chung Choy
From Cardiology Team, Department of Medicine and Geriatrics, Princess Margaret Hospital, Hong Kong

CHAN ET AL.: Is Dynamic Atrial Overdrive Pacing Antiarrhythmic or Proarrhythmic: A Case Report. Dynamic atrial overdrive (DAO) pacing algorithm is designed for prevention of atrial arrhythmias, specifically atrial fibrillation (AF). We describe a patient who underwent implantation of a dual chamber pacemaker with DAO function, for sinus node dysfunction, paroxysmal AF and supraventricular tachycardia. The patient developed persistent high rate pacing alternating with a long RP tachycardia, which was maintained by the DAO pacing algorithm. Sinus rhythm resumed on turning off the DAO pacing. (J HK Coll Cardiol 2002;10:198-202)

Key words : Dynamic atrial overdrive, proarrhythmia



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