不同高血压状态颈动脉瞬时波强变化及其临床意义

Changes of Carotid Wave Intensity in Patients with Different Blood Pressure and its Clinical Significance

瞬时波强(WI)是一种新的超声检测技术,通过WI可以了解左心室与外周动脉相互之间作用的血流动力学信息。WI的观测指标主要有反映左室收缩性能的W1,反映心脏主动停止搏血功能的W2以及反映外周动脉阻力的NA等三种参数。采用颈动脉WI检查,在原发性高血压血压未控制(HP1)组、血压已得到控制(HP2)组以及正常对照(NC)组之间进行比较分析,发现WI对外周动脉阻力和相应心脏收缩功能的变化较常规超声心动图更敏感。W1和NA有助于原发性高血压疗效的评估和动态随访。

Wave intensity （WI） is a new technique in Eehocardiography. We can understand the haemodynamics about interaction between the left ventricle and peripheral arteries by WI. The indexes of WI mainly included W1 , W2 and NA. W1 can reflect the contractility of left ventricule. W2 can reflect the ability of cardiac actively to stop the blood flow. NA can reflect the resistance of peripheral artery. The subjects included three groups that they were patients with uncured primary hypertension （HP1）, cured primary hypertension （HPz） and normal controls （NC）. Ca- rotid WI examination was performed and analyzed. The results showed that the WI contributed to understand the changes of hamodanymic caused by interaction between peripheral artery resistance and relevant left ventricular systolic function and it was more sensitive than routine echocardiography. The W1 and NA help to assess the curative effect and follow-up of primary hypertension.