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A Case of Myotonic Dystrophy with Sick Sinus Syndrome Hiroki Satoh 1 , Toshiyuki Murasaki 1 , Satoshi Kaneda 1 , Akihiko Yotsukura 2 , Tetsuro Kohya 2 , Akira Kitabatake 2 1Department of Cardiology, Kushiro Rousai Hospital 2Department of Cardiovasucular Medicine, Hokkaido University School of Medicine Keyword: 筋緊張性ジストロフィー , 洞不全症候群 , 電気生理学的検査 , myotonic dystrophy , sick sinus syndrome , electrophysiological study pp.187-190
Published Date 1997/2/15
DOI https://doi.org/10.11477/mf.1404901424
  • Abstract
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A 56-year-old woman with myotonic dystrophy as-sociated with sick sinus syndrome is reported. The patient showed bilateral cataracts, fixed facial expres-sion, percussion myotonia and weakness of grasping power. The ECG showed first-degree AV block on Holter ECG, intermittent sinus arrest was apparent with junctional escape beats at regular intervals. Electro-physiological study using overdrive suppression test showed that the sinus node recovery time was significantly prolonged. These findings in indicated the patient also had sick sinus syndrome. Despite the high incidence of electrocardiographic abnormalities in patients with myotonic dystrophy, there have been very few cases involving atrioventricular conduction abnor-malities with apparent sinus node dysfunction.


Copyright © 1997, 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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