老年高血压患者颈动脉结构及血流动力学变化的彩超检测价值

目的：探讨老年高血压患者颈动脉结构及血流动力学改变的彩超检测价值。方法：应用彩色多普勒超声检测86例老年高血压患者（高血压组）及40例健康老年人（对照组）颈动脉内径（CAD）、内膜中层厚度（IMT）、斑块发生率、血流收缩期峰值流速（PSV）、阻力指数（RI）及最大剪切率（SR）,分析比较高血压组与对照组以及高血压1、2、3级亚组间上述指标的差异。结果：老年高血压组颈动脉IMT及斑块发生率高于对照组,而PSV、SR低于对照组,且差异具有高度统计学意义（P〈0.01）;高血压1、2、3级亚组之间随着高血压分级升高,颈动脉IMT及斑块发生率也逐渐升高,而PSV、SR则逐渐降低,且组间比较差异具有统计学意义（P〈0.05）。结论：老年高血压患者存在颈动脉结构及血流动力学改变,且颈动脉硬化程度与血压升高程度成正比关系。应用彩超检测颈动脉粥样硬化的发生与发展对高血压患者发生心、脑血管事件的预测具有重要意义。

The value of color Dopplar ultrasound detected structure and hemodynamic changes of carotid artery in senile hypertensives

Objective： To evaluate the value of color Dopplar ultrasound detected structure and hemodynamic changes of carotid among the senile hypertensives.Methods： Carotid artery diameter（CAD）,intima media thickness（IMT）,the incidence of plaque,the peak systolic velocity（PSV）,resistance index（RI） and maximal shear rate（SR） were measured by ultrasonography in 86 cases of senile patients with hypertension（hypertension group） and 40 cases of healthy elders（control group）.Analize the difference of above indexs between hypertension group and control group and the difference between hypertension 1,2,3 grade.Results： Carotid artery IMT and the incidence of plaque in senile hypertensive group were significantly higher,the PSV,SR were significantly lower than control group（P0.01）.Along with hypertension grading increases,carotid IMT,incidence of plaque were gradually raised;SPV,SR were further reduced,the differences were statistically significant（P0.05）.Conclusion： Senile hypertension existes carotid structure and hemodynamic changes,and carotid atherosclerosis degree has directproportion with elevated blood pressure.Application of color Dopplar ultrasound detecting carotid atherosclerosis occurrence and development of the patients with hypertension to happen heart cerebrovascular disease forecast to have the important meaning