血管回声跟踪技术评价颈动脉弹性与冠心病的相关性

目的探讨应用血管回声跟踪技术（E—Tracking）评价颈动脉弹性与冠心病的相关性：方法对103例疑似冠心病患者同时行冠状动脉造影检查（CAG）和E-Trackingk检查，根据造影结果分为非冠心病组（A组：对照组）和冠心病组，冠心病组又根据冠状动脉病变的范围和血管阻塞程度由轻至重依次分为B、C、D、E四组。分析比较各组间应用E—Tracking检查获得的颈动脉弹性参数（包括压力应变弹性系数Ep、硬化参数β、动脉顺应性AC、单点脉搏波速度PWVβ、增大指数AI）。结果冠心病组的参数Ep、β和PWVβ较对照组明显增高，差异有统计学意义（p〈0．05），且随着各组间冠状动脉病变程度的不断加重，参数Ep、β和PWVβ逐渐增高，差异有统计学意义（p〈0．05），两者之间存在相关性。参数AC和AI在各组间无明显差异（p〉0．05）。结论应用血管回声跟踪技术测量的颈动脉弹性参数大小与冠状动脉的病变程度有相关性.

Correlation between carotid elasticity measured by echo tracking technique and coronary artery diseases

Objective To investigate the correlation between carotid elasticity measured by echo tracking technique and coronary artery diseases (CAD). Methods Totally, 103 cases suspected with CAD were examined by cardioangiography (CAG) and echo tracking technique on carotid arteries. All the cases were divided into non-CAD group (group A: control group) and four groups (B, C, D and E) according to the degree of steuosis of coronary arteries on CAG. Carotid elasticity parameters in the five groups measured by echo tracking technique included pressure-strain elastic modulus (Ep), stiffness parameter (β) , arterial compliance (AC), augment index(AI) and pulse wave conducting velocity (PWV β). Results Ep, β and PWV β in the CAD groups were significantly higher than those in the control group (p<0.05). The value of Ep, β and PWV β increased with the degree of stenosis of coronary arteries. The correlation showed statistical differences in different groups (p<0.05). There was no significant difference among the five groups about AC and AI (p>0.05). Conclution There is correlation between the value of carotid elasticity parameters on echo tracking technique and the degree of stenosis of coronary arteries on CAG.