Lyapunov exponents for synchronous 12-lead ECG signals  

作　　者：WANG Zhenzhou LI Zheng WEI Yixiang NING Xinbao LIN Yuzheng 

机构地区：[1]Department of Engineering Physics,Tsinghua University,Beijing,100084,China [2]Department of Electronic Science and Engineering,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Science Bulletin》2002年第21期1845-1848,共4页

基　　金：This work was supported by Tsinghua University (Grant No. 0009).

摘　　要：The Lyapunov exponents of synchronous 12-lead ECG signals have been investigated for the first time using a multi-sensor (electrode) technique. The results show that the Lyapunov exponents computed from different locations on the body surface are not the same, but have a distribution characteristic for the ECG signals recorded from coronary artery disease (CAD) patients with sinus rhythms and for signals from healthy older people. The maximum Lyapunov exponent L1 of all signals is positive. While all the others are negative, so the ECG signal has chaotic characteristics. With the same leads, L1 of CAD patients is less than that of healthy people, so the CAD patients and healthy people can be classified by L1, L1 therefore has potential values in the diagnosis of heart disease.The Lyapunov exponents of synchronous 12-lead ECG signals have been investigated for the first time using a multi-sensor (electrode) technique. The results show that the Lyapunov exponents computed from different locations on the body surface are not the same, but have a distribution characteristic for the ECG signals recorded from coronary artery disease (CAD) patients with sinus rhythms and for signals from healthy older people. The maximum Lyapunov exponent L 1 of all signals is positive. While all the others are negative, so the ECG signal has chaotic characteristics. With the same leads, L 1 of CAD patients is less than that of healthy people, so the CAD patients and healthy people can be classified by L 1, L 1 therefore has potential values in the diagnosis of heart disease.

关 键 词：CAD MULTI-SENSOR SYNCHRONOUS 12-lead ECG LYAPUNOV EXPONENTS chaos. 

分 类 号：R310[医药卫生—基础医学]