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目的探讨人体动脉血流动力学的特征。方法使用充气袖带式压力传感器及其测压系统,对10例正常志愿者(男7例,女3例,年龄19～24岁)进行了无创性肱动脉搏动压力检测。结果每一个心动周期的压力变化率(dP/dT)曲线包含4种波形成分,按出现顺序分别为Uw、Dw1、Dw2和Dw3,其中Uw为正向曲线,Dw1、Dw2和Dw3均为负向曲线。结论推动血液流动的动力可能不仅来源于心脏的泵作用,而且也来源于动脉血管平滑肌节律性地从近端向远端移行性收缩活动(migrating contraction of artery,MCA);本研究采用的检测血管动力的方法是有效和安全的。
Objective To investigate the characteristics of human arterial hemodynamics. Methods Inflatable cuff pressure sensor and its pressure measurement system were used to detect noninvasive brachial artery pulse pressure in 10 normal volunteers (7 males and 3 females, aged 19-24 years). Results The pressure change rate (dP / dT) curve of each cardiac cycle contained four kinds of waveform components, respectively Uw, Dw1, Dw2 and Dw3 in the order of appearance, where Uw is the positive curve and Dw1, Dw2 and Dw3 are negative curve. Conclusion The motivation for blood flow may not only originate from the cardiac pump but also from the proximal to distal migratory contraction of arteries (MCA). The blood vessels used in this study The motivation method is effective and safe.