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Effects of Nd:YAG Laser Irradiation on Ventricular Myocardium in Dogs using an Artificial Sapphire Tip Contact Laser Catheter Kazuo Matsumoto 1 , Yukio Asano 1 , Junichi Saitou 1 , Keiko Kaneko 1 , Toshio Yamamoto 1 , Masasi Uchida 1 , Takashi Tamura 1 , Chikashi Suga 1 , Yutaka Dohi 1 , Hiroshi Watanabe 2 1The 2nd Department of Internal Medicine, Saitama Medical School 2The 2 nd Department of Pathology, Saitama Medical School Keyword: Nd:YAGコンタクトレーザー , カテーテル焼灼法 , 拍動心 , Nd:YAG contact laser , catheter ablation , beating heart pp.999-1002
Published Date 1992/10/15
DOI https://doi.org/10.11477/mf.1404900557
  • Abstract
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To apply Nd: YAG laser irradiation through a new sapphire tip contact laser method to catheter ablation in treatment of tachy-arrhythmias, effects of laser irra-diation on ventricular myocardium were investigated in 10 mongrel dogs. Nd: YAG lase (1064nm) discharges were delivered to different sites on the endomyocardium at power of 5, 10, 15, 20 or 25w with duration of 3, 5, or 10 seconds (sec.) respectively in closed beating hearts. Histopathologically, the lesion irradiated was clearly demarcated from the normal myocardium by the contruction band necrosis zone.


Copyright © 1992, 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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