COMPARISON OF THE INFLUENCE OF RIGHT ATRIAL SEPTAL PACING AND APPENDAGE PACING ON AN ATRIAL FUNCTION IN THE CLINICAL SITUATION
M. Tanaka, K. Su, M. Oi, Y. Motohashi, K. Takahashi, E. Ko, K. Hanazawa, M. Toyofuku, M. Kitada, Y. Yutsuki, T. Tamura
Department of Cardiology, Japanese Red Cross Wakayama Medical Center, Wakayama, Japan
Introduction: The aim of this study was to evaluate the differences between right atrial septal(RAS) pacing and right atrial appendage(RAA) pacing.
Methods: 223 consecutive new patients with a right atrial(RA) electrode during the period from January 2004 to December 2012 were studied retrospectively.
Results: Mean age was 74.5 years and 104 were men. Mean follow-up was 4.5 years. 177 patients received RAA pacing and 46 received RAS pacing. There was no significant difference of parameters between patients with RAS pacing and with RAA pacing during the observational period. And there was no difference of the rate of change of left atrial dimension, PQ and PR duration brought by RAA pacing and RAS pacing with ?50% as the percentage of atrial pacing(%AP). Although RAA pacing with ?50% as %AP increased patients with atrial fibrillation(AF) (from 15 to 22), RAS pacing decreased them (from 14 to 12). On the other hand, there was no difference of the provability of appearance of AF between RAS pacing and RAA pacing(P=0.08).
Conclusions: This study did not show the superiority of RAS pacing to RAA pacing, but there is a possibility that RAS pacing controls an appearance of AF.
