Pulse wave analysis for cardiovascular disease studies using Subendocardial Viability Ratio

In this research, pulse analysis is performed on the data of 241 subjects collected from Department of Cardiology at Shandong Provincial Hospital in China. By taking the dynamic curve fitting, dicrotic notch is located using the third derivatives of the fitted function. Subendocardial Viability Ratio (SEVR), Systolic Time Index (SPTI), and Diastolic Time Index (DPTI) are calculated among the evaluated subjects, and then correlated to ages, genders, and different cardiovascular diseases. The results indicate that with the increase of ages, SEVR decreases; females have lower SEVR than males; patients with coronary heart disease, hypertension, and angina pectoris have low SEVR, DPTI and SPTI; the average SEVR of heart failure patients is about 33% lower than the average.