多谱勒超声观察老年高血压颈动脉改变

Color-Doppler Ultrosonic Observation of Carotid Artery Change in Elderly Hypertension

目的：探讨彩色多谱勒超声对老年高血压患者颈动脉变化特点。方法：应用彩色多谱勒超声仪对１２０例原发性老年高血压患者双侧颈动脉超声观察，并与５０例健康老年人进行对照分析。结果： （１）老年高血压组颈动脉阳性检出率为 ８４％，斑块检出率为６７％，明显高于健康人组，二组对比有显著性意义（Ｐ＜０．０１）；（２）．老年高血压组ＳＰＶ、ＥＤＶ较健康人组降低，血流动力学变化以流速减慢为主；（３）颈动脉血管病变彩色多谱勒多有相应特征性变化。结论：老年高血压患者颈动脉病变多以动脉硬化粥样斑块形成、流速减慢、血管阻力增高及顺应性降低为主要特点。彩色多谱勒超声能直观动态地了解颈动脉硬化程度，对临床诊治、预防脑卒中发生具有重要的实用价值。

Aim: To study carotid arteny in elderly hypertension with color-doppler. Methods: Both sides of carotid arteries were examined with colordoppler ultrasonography in 120 cases of hypertension, and 50 cases of good health people served as controls. Results: (1)The abnormal finding by doppler ultrasonic study on both sides of carotid artery in elder hypertensive is 84%, the incidence rate of plaque is 67%, which is significantly higher than that of controls; (2) Systolic pressure velocity (SPV) and end diastolic velocity(EDV) in hypertension group is much less than that in control. Reduction in blood flow speed is the main hemodynamic changes; (3)Normal artery, low speed flow, complicated with plaque displayed different characteristic pattern by color Dopller ultrasonography. Conclusion: Formation of atherosclerosis plaque, reduction of blood flow speed,increases in the resisitance of blood vessels and decreases ibn distensibility are the frequent abnormal finding in carotid arteries in elder hypertension patients.