Study on Techniques Involved in Tourniqueteless Blood Pressure Measurement Using PPG

Blood pressure (BP) is a vital signal to determine fitness of the patient. Existing BP tracking systems are either mechanically intrusive or intravenous. Consequently, they cannot be used for long period causing uneasiness, soreness and discomfort. the right strategy to that is the cuff less technique to estimate BP. This paper accommodates literature evaluation about present blood pressure monitoring, photoplethysmogram (PPG) and numerous techniques that involves PPG for BP estimation. This paper compares diverse tourniquet-less techniques used to estimate BP with the assist of ECG and PPG or only PPG. This includes Pulse Wave velocity (PWV), Pulse Transit Time (PTT), Pulse Wave evaluation (PWA), etc. Primary purpose of this paper is choice of the method for implementation. It also includes the schematic of the proposed system for implementation.