联合运用多普勒探头与脉搏波传感器检测脉搏波传导速度的可行性

目的 探讨联合运用超声多普勒探头与脉搏波传感器检测脉搏波传导速度(PWV)方法的可行性.方法 纳入30名正常人,分别将超声多普勒探头与脉搏波传感器放置于受试者左侧颈总动脉起始段及左侧踝部胫后动脉,将两测量点间距离与测得动脉多普勒血流流速曲线的起点和动脉脉搏波曲线起点间的传播时间相比,以所得比值作为颈-踝动脉段的PWV(caPWV)；并对检测结果与动脉硬化仪检测同一受试者肱-踝动脉段PWV(baPWV)的检测结果进行相关性分析.结果 将脉搏波传感器放置于颈总动脉、多普勒探头放置于胫后动脉时的PWV与动脉硬化仪检测得到的baPWV呈显著正相关(r=0.657,P＜0.01).将多普勒探头放置于颈总动脉、脉搏波传感器放置于胫后动脉时的PWV与动脉硬化仪检测得到的baPWV呈显著正相关(r=0.526,P＜0.01).结论 联合运用超声多普勒探头与脉搏波传感器检测PWV为检测PWV提供了一种新方法,具有一定临床实用价值,值得推广.

Feasibility of using Doppler probe and pulse wave sensor for the measurement of pulse wave velocity

Objective To study the feasibility of the detection of pulse wave velocity (PWV) combined with Doppler probe and pulse wave sensor. Methods Thirty healthy volunteers were enrolled. The ultrasonic Doppler probe and the pulse wave sensor were placed on the left carotid artery and the left posterior tibial artery of the same subject respectively. The distance between the left carotid artery and the left posterior tibial artery of the subject was divided by the time between the starting point of the blood flow velocity curve and the starting point of the artery pulse wave curve, and the ratio was believed as the caPWV. Then baPWV of the same subject was detected by arteriosclerosis detecting device. The correlation between the detecting results with the two methods was analyzed. Results There was positive correlation between the result with arteriosclerosis detecting device and the result when the ultrasonic Doppler probe was placed on the left posterior tibial artery and the pulse wave sensor was placed on the left carotid artery (r=0.657, P<0.01), as well as between the result with arteriosclerosis detecting device and the result when the pulse wave sensor was placed on the left posterior tibial artery and the ultrasonic probe was placed on the left carotid artery (r=0.526, P<0.01). Conclusion A new method of detecting PWV is provided combined with the ultrasonic Doppler probe and the pulse wave sensor, which is worth to be used in clinic as a further spreaded method.