Effects of Slow Pathway Ablation on Fast Pathway Function in Patients With Atrioventricular Nodal Reentrant Tachycardia : Cryo- vs. Radiofrequency Ablation

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著者

    • PARK Kyoung-Min
    • Sanggye Paik Hospital, Department of Internal Medicine, University of Inje College of Medicine
    • RHEE Kyoung-Suk
    • Chonbuk National University Hospital, Division of Cardiology, Department of Internal Medicine, Chonbuk National University
    • JIN Eun-Sun
    • East-West Neo Medical Center, Department of Internal Medicine, College of Medicine, KyungHee University
    • NAM Gi-Byoung
    • Asan Medical Center, Department of Internal Medicine, University of Ulsan College of Medicine
    • CHOI Kee-Joon
    • Asan Medical Center, Department of Internal Medicine, University of Ulsan College of Medicine
    • KIM You-Ho
    • Asan Medical Center, Department of Internal Medicine, University of Ulsan College of Medicine

抄録

<b><i>Background:</i></b> In typical atrioventricular nodal reentrant tachycardia, radiofrequency (RF) ablation of the slow pathway (SP) is known to change the effective refractory period of the fast pathway (ERP<sub>FP</sub>) after successful RF ablation of the SP. The purpose of this study was to ascertain the mechanism of the ERP<sub>FP</sub> changes after SP ablation by comparing the results of both cryo- and RF ablation. <b><i>Methods and Results:</i></b> A total of 112 patients were enrolled prospectively and their electrophysiological properties analyzed before and after successful SP ablation. Patients were grouped into cryoablation (n=54) and RF ablation (n=58) groups and each group was subdivided into complete ablation (CG) and modification (MG) based on the presence of the SP after successful ablation. CG was performed in 64 patients: 30 by cryoablation and 34 by RF ablation. In patients who underwent complete SP ablation, the ERP<sub>FP</sub> was shortened significantly after cryoablation (375±74 vs. 281±39ms, P<0.01), without significant change in the atrio-His (AH) or sinus cycle length (SCL) interval. Similarly, the ERP<sub>FP</sub> was shortened significantly (358±106 vs. 289±84ms, P=0.01) also after RF ablation without change in AH or SCL interval. <b><i>Conclusions:</i></b> ERP<sub>FP</sub> shortening was observed after complete SP ablation with both cryo- and RF ablation without significant changes in indices of autonomic activity. (<i>Circ J</i> 2012; <b>76:</b> 1091-1096)<br>

収録刊行物

  • Circulation journal : official journal of the Japanese Circulation Society

    Circulation journal : official journal of the Japanese Circulation Society 76(5), 1091-1096, 2012-04-25

    The Japanese Circulation Society

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各種コード

  • NII論文ID(NAID)
    10030132234
  • NII書誌ID(NCID)
    AA11591968
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13469843
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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