Preliminary research on quantitative evaluation of carotid artery elasticity in patients with cirrhosis using ultrafast pulse wave velocity technique
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摘要: 目的探讨极速脉搏波(ultrafast pulse wave velocity,UFPWV)技术在定量评价肝硬化患者颈总动脉弹性中的应用价值。方法选择2013年9月至2014年6月间在西安交通大学第二附属医院经临床确诊的43例肝硬化患者,为肝硬化组,同期健康体检者71例为对照组,两组间年龄、性别相匹配。应用UFPWV技术测量两组病例的双侧颈总动脉内中膜厚度(IMT)和弹性参数:包括收缩期开始时的脉搏波传导速度(PWVBS)和收缩期结束时的脉搏波传导速度(PWVES)。采用t检验比较两组间的IMT及弹性参数,采用Pearson相关分析肝硬化组弹性参数与IMT的关系。结果肝硬化组颈动脉的IMT(0.63±0.10)mm、PWVBS(6.46±1.23)m/s、PWVES(8.77±1.18)m/s均较对照组增大,差异有统计学意义(t值分别为12.233、6.388、6.681,P值均<0.001)。肝硬化组的PWVBS、PWVES与IMT呈正相关(r值分别为0.248、0.383,P值均<0.001)。结论肝硬化患者的颈动脉弹性较健康人减低,UFPWV技术可快速测量肝硬化患者颈...Abstract: Objective To explore the value of ultrafast pulse wave velocity( UFPWV) technique in the quantitative evaluation of carotid artery elasticity in patients with cirrhosis. Methods Forty- three patients diagnosed clinically with cirrhosis in our hospital from September2013 to June 2014 were enrolled as subjects. Seventy- one healthy physical examinees within the same period were used as controls. The cirrhosis group matched the control group in terms of age and gender. The intima- media thickness( IMT) and elasticity parameters of the bilateral carotid arteries were measured by the UFPWV technique. The elasticity parameters included the pulse wave velocity at the beginning of the systole( PWVBS) and the pulse wave velocity at the end of the systole( PWVES). Comparisons of IMT and elasticity parameters between the two groups were made by t test,and the relationship between elasticity parameters and IMT in the cirrhosis group was analyzed using Pearson correlation. Results The carotid artery IMT,PWVBS,and PWVESin the cirrhosis group were significantly larger than those in the control group( t = 12. 233,P < 0. 001; t = 6. 388,P < 0. 001; t = 6. 681,P < 0. 001). In the cirrhosis group,PWVBSand PWVESwere positively correlated with IMT( r = 0. 248,P < 0. 001; r = 0. 383,P < 0. 001). Conclusion The carotid artery elasticity in patients with cirrhosis is lower than that in healthy people. The UFPWV technique can quickly measure the local PWVBSand PWVESof carotid artery in patients with cirrhosis,which provides a novel and convenient method to evaluate vascular elasticity in patients with cirrhosis.
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Key words:
- liver cirrhosis /
- ultrafast pulse wave velocity /
- carotid arteries
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