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Study of Suitable Analyzed Signal Duration and Criteria for Abnormal Signal Averaged Electrocar-diogram on Frequency-domain Analysis in Patients with Duchenne's Muscular Dystrophy Masahiro Kubo 1 , Suguru Matsuoka 1 , Yuri Ushiroguchi 1 , Katsuyoshi Tatara 1 , Yutaka Matsuka 2 , Yasuhiro Kuroda 2 1The Department of Pediatrics, School of Medicine, University of Tokushima 2Tokushima Muscular Dystrophy Sanatrium Keyword: Duchenne型進行性筋ジストロフィー症 , 周波数解析 , 心室頻拍 , Duchenne's muscular dystrophy , frequencydomain analysis , ventricular tachycardia pp.1073-1078
Published Date 1993/11/15
DOI https://doi.org/10.11477/mf.1404900763
  • Abstract
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We investigated the optimal condition to detect abnormalities on the fast-Fourier transformation of the signal-averaged electrocardiogram (SA-ECG) by studying the effects of analyzed signal duration, attenuation of low frequency components by using filtering processing and the criteria for abnormal SA-ECG.

Subjects were 23 patients with Duchenne's muscular dystrophy (DMD) and were divided into two groups by the presence of ventricular tachycardia (VT). Age-matched healthy volunteers were obtained as controls. Abnormal SA-ECG was identified from the data in the controls as over 97 percentile of H/L ratio.


Copyright © 1993, 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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