Li Kun, Zhang Song, Yang Lin, Luo Zhichang, Gu Guanxiong
College of Life Science and Bio-Engineering, Beijing University of Technology, Beijing 100124, China.
Biomed Mater Eng. 2014;24(6):2657-64. doi: 10.3233/BME-141082.
There are many similarities between the photoplethysmography(PPG) pulse wave and the radial pulse when a body is in a stationary state, but the difference between them under conditions of movement is not yet clear. Finding these differences may help further understanding of the cardiovascular system.
PPG and radial pulse wave were recorded simultaneously while subjects were conducting a bicycle exercise test that included the resting and exercise state, while the K and K' parameters were being acquired from the PPG and radial pulse, respectively. Furthermore, the pulse objective pattern is observed via the time domain waveform and XY graph.
When the body's state of movement changes dramatically, there is a time difference between the pulse parameter K and the pulse amplitude, and the difference of the pulse pattern is enhanced during the exercising phase.
Radial pulse waves are not the same as PPG during exercise in either the pulse parameter or the pulse pattern. This information can be used to further evaluate the state of arterial circulation and microcirculation.
人体处于静止状态时，光电容积脉搏波（PPG）与桡动脉脉搏有许多相似之处，但运动状态下二者的差异尚不清楚。找出这些差异可能有助于进一步了解心血管系统。
在受试者进行包括静息和运动状态的自行车运动试验时，同步记录PPG和桡动脉脉搏波，同时分别从PPG和桡动脉脉搏获取K和K'参数。此外，通过时域波形和XY图观察脉搏目标模式。
当身体运动状态发生显著变化时，脉搏参数K与脉搏幅度之间存在时间差，且运动阶段脉搏模式的差异会增强。
运动期间，桡动脉脉搏波在脉搏参数或脉搏模式方面与PPG均不相同。该信息可用于进一步评估动脉循环和微循环状态。
