动态误差分析系统与脉搏波速度测定系统的关系

目的：检测颈-股动脉脉搏波速度（CF—PWV）与脉压差（PP）之间的关系，证实动态误差分析系统对脉搏波速度测定系统结果的准确性有影响。方法：检测486例原发性高血压患者。用脉搏波速度测定仪将受检人群在检测时的动态误差分别设置为15％〉误差〉119％，10％〉误差〉5％，5％〉误差．3种误差状态下分2组重复测量颈动脉-股动脉（CF—PWV）。检测颈动脉-股动脉脉搏波速度（CF—PWV），同时应用台式血压计进行血压测定，算出脉压差（PP）。结果：脉压（PP）≥60mmHg（7．98kPa）者的脉搏波速度CF—PWV显著高于脉压〈60mmHg者（14．2±2．34）m／s和（8．5±1．81）m／s，P〈0．001]。脉搏波速度（CF—PWV）与脉压（PP）和年龄显著正相关（脉压r=0．529，P=0．000；年龄r=0．331，P=0．003）。结果显示，动态误差在10％〉误差〉5％，5％〉误差2种状态下各组人群的各节段PWV值无显著差异；而动态误差在15％〉误差〉10％时，与动态误差5％组比较。各节段PWV值的差异显示出统计学意义。结论：动态误差分析系统对PWV检测结果会有不同影响，选择误差较小的检测模式有利于提高检测结果的准确性．脉压差（PP）与脉搏波速度（CF—PWV）密切相关，动脉脉搏波速度（CF—PWV）作为一项新的评价动脉硬度的指标，更加科学、准确、方便。

Relation of Dynamic Error Analysis System and Pulse Wave Velocity Measure

Obiective To detect the carotid-femoral pulse wave veloeity(CF-PWV) and evaluate relation in pulse pressure (PP) and pulse wave velocity ('PWV), and prove the effect of dynamic error analysis system on pulse wave velocity measure. Methods 486 cases with essential hypertension were detected with carotid-femoral pulse wave velocity. The dynamic error was controlled in three kinds of condition: 15%>error>10%, 10%>error>5% and 5%>error, which PWV values were tested repeatedly with the effect of different errors observed. At the same time the blood pressure was measured and the pulse pressure was calculated. Results The pulse wave velocity which pulse pressure ≥60mm Hg (1mm Hg=0.133 kPa) was significantly higher than pulse pressure <60turn Hg (14.2± 2.34)m/s and (8.5±1.81)m/s, P<0.001] . Pulse wave velocity and pulse pressure and age showed a significant positive correlation (pulse pressure r=0.529, P=0.000; age r= 0.331 P=0.003).When dynamic error is more than 10% and less than 15%, the diversity of PWV values showed the significance of statistics. Conclusion The effect of dynamic error analysis system on pulse wave velocity measure, less error test pattern is advantageous to enhance accuracy. The pulse pressure is closely related to pulse wave velocity. Arterial pulse wave velocity is a new evaluation of the indicators of arterial stiffness, and it's more scientific, accurate and eonvenient.