Determination of Peripheral Arterial Diseases from Toe Brachial Index (TBI) Using Photoplethysmography (PPG)

Peripheral arterial disease (PAD) is defined as a narrowing or occlusion of the arteries supplying the lower extremities. Peripheral Arterial Diseases (PAD) is estimated to affect one third of individuals older than 65 years of age, occurs in younger individuals who use tobacco or have diabetes mellitus (DM), A reliable tool to measure arterial flow to the feet in people with diabetes is required given that they are particularly prone to peripheral arterial disease (PAD) traditionally, the ankle brachial index (ABI) has been used to measure arterial circulation, but its application is limited due to calcification of larger arteries. More recently toe pressure (TP) and the toe brachial index (TBI) has been suggested as superior to ABI measurements because they assess smaller digital arteries less prone to arterial calcification. Portable photoplethysmograph (PPG), which offers a simple and inexpensive method to calculate the same.