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The Slow Pathway Ablation of Atrioventricular Nodal Reentrant Tachycardia:Comparison between the anatomical and the electrophysiological approach Yoshihisa Enjoji 1 , Kaoru Sugi 1 , Takanori Ikeda 1 , Mahito Noro 1 , Takao Sakata 1 , Mitsuaki Takami 1 , Takeshi Nakae 1 , Naoki Tezuka 1 , Tetsu Yamaguchi 1 1Third Department of Internal Medicine, Toho University School of Medicine, Ohashi Hospital Keyword: 遅伝導路 , 解剖学的アプローチ , 房室結節回帰性頻拍 , slow pathway ablation , anatomical approach , atrioventricular nodal reentrant tachycardia pp.187-191
Published Date 1998/2/15
DOI https://doi.org/10.11477/mf.1404901645

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  • Abstract
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The slow pathway potential or slow potential are useful markers for ablation of the slow pathway in patients with AV nodal reentrant tachycardia (AVNRT). On the other hand, the anatomical approach without detecting these potentials has also been perfor-med because the slow pathway exists near the coronary sinus ostium. We hypothesized that to detect the poten-tial was not always necessary for slow pathway abla-tion. To confirm this hypothesis, we compared both approaches in 33 patients with AVNRT ; the electrical parameters approach as Group P (24 patients) and the anatomical approach as Group A (19 patients). In group A, the ablation catheter was positioned at the lowest one third of the area between the position of the elec-trode catheter recording His bundle potential (HBE) and the orifice of the coronary sinus (CS) at the right anterior oblique view, and just above the CS also posterior to the HBE catheter at the left anterior oblique view where the HBE catheter was seen tan gentially. In both groups the AN ratio was less than 1.0. The group A presented the same success rate as group P, and there was less proce-dure time without complications compared to group P (p<0.01).

Conclusion : The slow pathway potential or slow potential is not always necessary for slow pathway ablation. The anatomical approach without detecting these potentials can be safely and effectively performed, and this approach is recommended when it is difficult of find the electrical parameters or when too much time may be taken for mapping.


Copyright © 1998, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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