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目的应用超声评价高血压患者的颈动脉弹性。方法以M型超声测定52例高血压患者和40名健康受检者的颈总动脉硬度指数β、扩张性系数(DC)、顺应性(AC)及压力应变弹性系数(EP)等弹性参数指标,并分析这些指标与患者年龄、血压及颈总动脉内中膜厚度(IMT)的相关性。结果与对照组比较,高血压组β、EP明显增高(均P<0.01),DC、AC明显降低(均P<0.05);年龄、脉压(PP)、IMT分别与β、EP成正相关,与DC、AC成负相关(P<0.05或0.01)。结论 M型超声是评价高血压患者颈动脉弹性的一种实用技术。
Objective To evaluate the carotid elasticity of hypertensive patients by ultrasound. Methods The parameters of carotid artery stiffness index β, dilatation coefficient (DC), compliance (AC) and stress-strain elastic modulus (EP) were measured by M-mode ultrasound in 52 hypertensive patients and 40 healthy subjects , And analyzed the correlation between these indexes and patient’s age, blood pressure and carotid intima-media thickness (IMT). Results Compared with the control group, the levels of β and EP in hypertension group were significantly higher (all P <0.01), and the levels of DC and AC were significantly lower (all P <0.05); age, pulse pressure (PP) and IMT were positively correlated with β and EP, Negatively correlated with DC and AC (P <0.05 or 0.01). Conclusion M-mode ultrasound is a practical technique to evaluate the carotid artery elasticity in hypertensive patients.