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The Clinical Usefulness of Signal-averaged Electrocardiograms in Arrhythmogenic Right Ventricular Dvsnlasia Kaoru Nakazato 1 , Yuji Nakazato 1 , Yoriaki Mineta 1 , Masayuki Yasuda 1 , Masataka Sumiyoshi 1 , Hiroshi Yamaguchi 1 , Yasuro Nakata 2 , Toru Iwa 3 , Guy Fontaine 4 1Department of Cardiology, Juntendo University School of Medicine 2Department of Cardiology, Juntendo Izu-Nagaoka Hospital 3The Third Department of Internal Medicine, Aich Medical University 4Jean Rostand hospital Keyword: 不整脈源性右室異形成症 , 加算平均心電図 , 心室頻拍 , arrhythmogenic right ventricular dysplasia(ARVD) , signal averaged electocardio-gram(SAE) , ventricular tachcardia(VT) pp.413-418
Published Date 1999/4/15
DOI https://doi.org/10.11477/mf.1404901886
  • Abstract
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 We compared three analyzing methods of signal-averaged electrocardiograms (SAE) in arrhythmogenic right ventricular dysplasia (ARVD). SAE were recorded in 65 normal subjects and 36 ARVD patients with sustained ventricular tachycardia (VT). Time domain (TD), Fast fourier transformation (FFT) and spectral turbulence (ST) analyses were performed.

 Diagnostic sensitivity for detecting VT was 54% in TD, 49% in FFT and 10% in ST analyses. Specificity was 100% in TD, 97% in FFT and 100% in ST analyses. Total predictive accuracy was 83% in TD, 79% in FFT and 66% in ST analyses. Thus, TD and FFT analyses.were less effective for detecting VT in ARVD and ST was particularly unreliable for this aim. However, accuracy concerning specificity was high in all analyses.


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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