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A Case of Syncope-associated Atrioventricular Reentrant Tachycardia with Hypertrophic Obstructive Cardiomyopathy Hidekazu Hirao 1 , Yuji Muraoka 1 , Hiroshi Mitsuoka 1 , Tadakatsu Yamada 1 , Yukiko Nakano 1 , Akito Hiraoka 1 , Hiroki Teragawa 1 , Masaya Kato 1 , Togo Yamagata 1 , Hideo Matsuura 1 , Goro Kajiyama 1 1First Department of Internal Medicine, Hiroshima University School of Medicine Keyword: 閉塞性肥大型心筋症 , 房室回帰性頻拍 , 高周波カテーテルアブレーション , hypertrophic obstructive cardiomyopathy , atrioventricular reentrant tachycardia , radiofrequency catheter ablation pp.87-91
Published Date 1999/1/15
DOI https://doi.org/10.11477/mf.1404901835
  • Abstract
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A 54-year-old female had experienced recurrent epi- sodes of palpitation and syncope since the age of 46. At the age of 54, she experienced syncope following palpita-tion and was admitted to a nearly hospital. Her systolic blood pressure was 40 mmHg and electrocardiogram revealed supraventricular tachycardia (200/min). Intra-venous administration of adenosine triphosphate ter-minated this tachycardia and blood pressure and con-sciousness were recovered. She was admitted to our hospital for the evaluation of syncope and su-praventricular tachycardia. By noninvasive and inva-sive tests, she was diagnosed as having hypertrophic obstructive cardiomyopathy. During electrophysiologic study, supraventricular tachycardia was induced by the application of a single extra stimulus to the high right atrium and was associated with hypotension (40~60 mmHg) and near syncope. This tachycardia wasdiagnosed as orthodromic atrioventricular reentrant tachycardia using a right posterior concealed accessory pathway. We performed radiofrequency catheter abla-tion for the right posterior accessory pathway, resulting in the complete elimination of atrioventricular reentrant tachycardia. Hence, we reported a case of a patient with hypertrophic obstructive cardiomyopathy who had atrioventricular reentrant tachycardia associated with hypotension and syncope. Complete elimination of this tachycardia was accomplished by radiofrequency cath-eter ablation.


Copyright © 1999, 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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