The Significance Change of PPG Reflection Index in Left Ventricular Hypertrophy Risk Individual

This paper describes the significance of the Reflection Index (RI) calculated from the Photoplethysmography (PPG) signals of Left Ventricular Hypertrophy (LVH) risk group. A Dolphin One PPG system has been used in this work. During data acquisition, PPG signals have been recorded from the right index finger of two groups of subjects comprising of healthy and LVH risk subjects. The recording of PPG signal follows a custom protocol. The PPG signals obtained were analysed offline using a custom MATLAB algorithm (Math Work Inc) and SPSS version 11.5. The analysis result comparing between the risk and healthy groups shows that the reflection index (RI) is significantly different between the two groups (p = 0.03). Therefore, PPG parameter, RI may be used to characterize LVH syndrome.