Nonlinear Dynamics Analysis in Patients with Coronary Heart Disease in Chinese Analysis in coronary heart disease

The article emphasizes clinical significance of exercise electrocardiograph (ECG) test with nonlinear analysis applied on patients with coronary heart disease (CHD). The synchronous 12-lead ECG signals of sixty old patients with CHD have been studied by the methods of correlation dimension. The patients with CHD had lower correlation dimension in each exercise test program. The results also showed that correlation dimensions are different in each lead of ECG signal even in the same patient. The study shows that the correlation dimension is a valuable parameter in analyzing nonlinear dynamical characteristics of the ECG signal and may complement differential diagnosis in CHD.