Photoplethysmography Pulse Wave Signal Detection and Pulse Rate Characteristics Based on an in vitro Experiment
10.16156/j.1004-7220.2024.04.021
- VernacularTitle:基于体外实验的光电容积脉搏波信号检测及脉率特性
- Author:
Weijun HE
1
;
Yongtao LIU
;
Dengji LIU
;
Kai YIN
;
Ying HE
;
Qingzhuo CHI
;
Lizhong MU
Author Information
1. 大连理工大学 能源与动力学院,海洋能源利用与节能教育部重点实验室,辽宁 大连 116024
- Keywords:
pulse rate variability;
photoplethysmography pulse wave;
circulatory system model in vitro;
hemodynamics
- From:
Journal of Medical Biomechanics
2024;39(4):712-717
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the influence of changes in blood flow parameters on pulse rate characteristics by taking the advantage of controllable parameters in an experimental cardiopulmonary bypass system.Methods A set of human circulatory system equipped with an in vitro wrist model was established.By changing parameters such as the heart rate,wrist flow,pressure,and system compliance,a photoplethysmography pulse wave signal was obtained from the wrist model,and the time-and frequency-domain indices of pulse rate variability were extracted.Results Changes in heart rate,pressure,and system compliance caused a change in pulse shape,but the time domain indices NN50 and PNN50,which indicate pulse rate variability,were zero,and the other indices and frequency domain indices were in the very low value category.Conclusions In the absence of heart rate variability,hemodynamic changes in heart rate,wrist flow,blood pressure,and system compliance did not produce significant pulse rate variability.This study can provide a reference for studies on pulse rate variability and heart rate using more convenient wrist acquisition equipment.
