Frequency Analysis of QRS Complex : Interpretation of Invisible Information and its Clinical Significance

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  • QRS波の周波数解析による非視覚的情報の解釈と臨床応用について

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Abstract

<p>The higher frequency components（HFC ; 200 Hz or more）hidden within the QRS complex（QRS）may reflect small local abnormalities of cardiac excitation. Until now, the clinical significance of HFC has been a mysterious subject for cardiologists. However, the appearance of HFC may capture depolarization abnormalities at the millimeter level in the cardiac ventricles. This could provide new information from electrocardiograms. Our group has studied the frequency analysis of QRS for 20 years. In this manuscript, I review our research, which I believe will be beneficial for young researchers in this field. In this review I discuss the development of frequency analysis, discuss the clinical application of the wavelet transform, and explore the genesis of HFC using a computer simulation.</p>

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