Detection method of vascular elasticity and blood pressure based on single probe photoplethysmography pulse wave

Abstract

The invention belongs to the field of medical signal processing, and provides a detection method of vascular elasticity and blood pressure based on a single probe photoplethysmography pulse wave. According to the technical scheme, through the adoption of the detection method, quantization of the vascular elasticity and estimation of the blood pressure are achieved on the condition that a photoplethysmography pulse wave is collected merely through a single probe. The detection method comprises the first step of collecting the pulse wave and the blood pressure based on a pulse wave collecting system and a cuff sphygmomanometer; the second step of extracting features related to the vascular elasticity and the blood pressure; the third step of building a blood pressure predicting linear regression equation through the adoption of a stepwise regression method according to a relevant feature quantity; the fourth step of training a BP neural network according to the relevant feature quantity, and measuring the elasticity of an artery blood vessel and a blood pressure value through the trained neural network. The detection method of the vascular elasticity and blood pressure based on the single probe photoplethysmography pulse wave has the advantages that the algorithm performance is good, the quantization of the elasticity of the artery blood vessel wall of the human body can be achieved through the photoplethysmography pulse wave collected by the single probe, and the blood pressure value can be accurately predicted.

Description

technical field [0001] The invention belongs to the field of medical signal detection and processing, and relates to a method for detecting blood vessel elasticity and blood pressure based on single-probe photoplethysmography. Background technique [0002] The elasticity of blood vessels in the human body generally decreases gradually with age, and people with poor blood vessel elasticity generally have a certain degree of arteriosclerosis. The present invention aims at arteriosclerosis in many cardiovascular diseases, and the existing measurement standards PWV and ABI for evaluating blood vessel elasticity are different in different people, and the pulse waves of two parts of the human body need to be measured at the same time, and the operation is complicated. [0003] Obtaining blood pressure parameter information based on volume pulse wave is the focus and hot spot of research in recent years. The difficulty of this problem lies in how to calibrate the volume pulse bloo...

AI Technical Summary

Problems solved by technology

The former generally cannot get rid of the shackles of the inflatable cuff and the influence of constant pressure changes on the human body, and long-term measurement will bring discomfort to the tester

The latter method is a new idea that has emerged in recent years. It does not need an inflatable cuff, and the blood pressure per stroke can be indirectly calculated by detecting the pulse wave transit time. Pulse wave signal, pulse wave signal and pulse wave signal require the operator to have certain medical knowledge, and the requirements for the detection part are very strict, and the operation is inconvenient

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