基于容积脉搏波的血压参数测量与标定的方法研究

A Calibrated Method for Blood Pressure Measurement Based on Volume Pulse Wave

提出通过人体指端一点位置测量脉搏波传播时间,进而标定收缩压、舒张压。具体方法是通过交替点亮红光和红外光获取容积脉搏波,经放大滤波及信号处理后得到加速脉搏波,通过测量其中推进波和反射波之间的脉搏波传播时间来建立与血压的关系。根据数据回归分析建立收缩压测量方程式,根据容积脉搏波中交直流成分之间存在的线性关系及数据回归分析,建立相应的舒张压测量方程式。通过临床33例人体实验,其中18人作为训练组,15人作为对照组,并与基于传统充气袖带测量的OMRON电子血压仪测量结果作对照验证,结果表明有较好的一致性。此方法简单易行,可望作为一种无创、连续血压参数测量的标定方法。

Physiology parameters measurement based on volume pulse wave is suitable for the monitoring blood pressure continuously. This paper described that the systolic blood pressure （SBP） and diastolic blood pressure （DBP） can be calibrated by measuring the pulse propagation time, just on one point of finger tip. The volume pulse wave was acquired by lighting the red and infrared LED alternately, and after signal processing, an accelerated pulse wave was obtained. Then by measuring the pulse wave propagation time between the progressive wave and reflected wave, we can find the relationship of the time and the blood pressure, and establish the related systolic blood pressure measurement equation. At the same time, based on the relationship between alternating current and direct current components in the volume pulse waveforms and through regression analysising, the relevant diastolic blood pressure measurement equation can be established. 33 clinical experimentation cases have been worked by dividing them into two groups： training group （18 cases） and control group （15 cases）, by comparing with the measuring results of the OMRON electronic sphygmomanometer. The results indicated that the two methods had good coherence. The measurement described is simple and reliable, and may be served as a new method for noninvasively and continuously measurement of blood pressure.