窦性和房性心律失常的Hurst指数分析

Hurst Index Based Analysis of Sinus Arrhythmia and Atrial Arrhythmia

采用Hurst指数法,从MIT-BIH标准数据库中提取正常窦性心律、房性早搏(APC)、窦性心动过缓(SBR)信号,分别计算它们的Hurst指数值,从而区分这两种心律失常。试验结果表明,这三种信号的Hurst指数值有所不同,但都大于0.5,说明都有长期相关的特性,其中正常信号相关性最强,SBR次之,APC最弱,因此Hurst指数可以作为识别窦性和房性心律失常的一种判据。

This study sought to disclose whether Hurst index can be used as a criterion for distinguishing sinus and atrial arrhythmia signals.Normal sinus rhythm beats,atrial premature contraction（APC） beats,and sinus bradycardia（SBR） signals,were taken from the MIT-BIH standard database.Hurst index method was used to distinguish the two kinds of arrhythmia.The results showed that the Hurst exponents of three kinds of signals were larger than 0.5,but they were in different value region.The data indicated that the long-term relevant character was the best for normal signal, better for sinus bradycardia,and the worst for atrial premature beats.So Hurst index is a useful identification criterion for distinguishing sinus and atrial arrhythmia signals.