摘要
对心电数据库中的正常人、心绞痛病人和心肌梗塞病人的体表心电图进行分析,得到P波、QRS波和T波的形态差异序列和RR间期序列,用DFA(Detrended fluctuation analysis)方法分析其变异性。结果表明,从正常态到病态RR间期的DFA指数的变化模式同P波、QRS波和T波形态差异序列的DFA指数的变化模式不同。三种状态下RR间期的DFA指数都近似为1,从正常态到病态没有明显不同。而P波、QRS波和T波形态差异序列的DFA指数正常态近似为0 .5 ,且从正常态到病态呈减小趋势。
Three different kinds of ECG data including the healthy, angina and myocardial infarction from the ECG database were analyzed to obtain the morphological difference sequence of their P-waves, QRS-wave and T-wave, and their RR interval sequences. Then the variability of these four sequences was analyzed by detrended fluctuation analysis （DFA） method. The results indicate that, the changing pattern in the DFA index of RR interval sequence from the healthy to the morbidity is different from those of the P-wave, QRS-wave and T-wave. The DFA indices of the RR interval sequence are about 1 in all three states, while the DFA indices of the other three sequences are about 0.5 in the healthy and all decrease from the healthy to morbidity.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2005年第2期316-319,共4页
Journal of Biomedical Engineering
基金
高等学校骨干教师资助计划项目 [教技司 (0 0 ) 65号 ]
