Double atrial potentials recorded in the coronary sinus in patients with Wolff-Parkinson-White syndrome: A possible mechanism of induced atrial fibrillation

Ming Hsiung Hsieh, Ching Tai Tai, Chern En Chiang, Chin Feng Tsai, Yi Jen Chen, Paul Chan, Yu Chen Kuo, Shih Huang Lee, Kwo Chang Ueng, Shih Ann Chen

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Abstract

Background: Double atrial potentials recorded in the coronary sinus are not an unusual phenomenon in patients with supraventricular tachyarrhythmias. They have been demonstrated to potentiate the occurrence of atrial tachyarrhythmias. Methods: Two hundred and forty-eight patients were included for investigating the presence of double atrial potentials on the coronary sinus recordings during electrophysiologic study. Group 1 consisted of 136 patients with WPW syndrome and group 2 consisted of 112 patients with atrioventricular nodal reentrant tachycardia (AVNRT). Group 1 patients had a higher incidence of induced atrial fibrillation (AF) (27% vs. 15%, P = 0.045) than group 2 patients. In addition, the incidence of double atrial potentials was significantly higher in group 1 than in group 2 patients (14% vs. 2%, P = 0.001). In group 1, 19 patients with double atrial potentials had a significantly higher incidence of left lateral bypass tracts (79% vs. 39%, P = 0.001) and induced AF (47% vs. 22%, P = 0.01) than 117 patients without double atrial potentials. Conclusions: WPW syndrome, especially with a left lateral bypass tract, had a higher incidence of double atrial potentials and induced AF than AVNRT. WPW patients with double atrial potentials had a higher incidence of induced AF than those without double atrial potentials. These findings may contribute to understanding the mechanism of induced AF in WPW syndrome.

Original languageEnglish
Pages (from-to)97-103
Number of pages7
JournalJournal of Interventional Cardiac Electrophysiology
Volume11
Issue number2
DOIs
Publication statusPublished - Oct 2004

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Keywords

  • atrial fibrillation
  • double potentials
  • Wolff-Parkinson-White syndrome

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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