摘要
目的:观察颈动脉狭窄50%～69%和70%～99%患者的阻力指数特点,为颈动脉狭窄分度提供参考方法:选取30例颈动脉狭窄50%～69%和28例70%～99%患者,应用彩色多普勒技术观察阻力指数参数特点结果:50%～69%和70%～99%狭窄的2组狭窄前RICCA差异无统计学意义,而狭窄后RIDIS和狭窄前后的RI差值RI_(CCA-DIS)差异有明显统计学意义(P<0.05) RI_(CCA-DIS)≥0.215对颈动脉狭窄70%～99%的敏感性为57.1%,特异性96.7%,总准确率为77.6%。结论:RI_(CCA-DIS)不是一个判断血管狭窄分度的良好指标,但可以作为排查颈动脉狭窄70%～99%的参数。
Objective ：To determine the features of resistance index in patients with 50% -69% and 70% -99% carotid artery stenosis, thereby providing references for clinical grading. Methods： Thirty patients with 50% -69% and 28 as having 70% - 99% carotid artery stenosis were enrolled to determine the features of resistance index via color Doppler uhrasonography. Results ： The distinction in RICCA prior to narrowing did not reach statistical significance （P 〉 0.05 ） in patients with 50% -69% and 70% -99% carotid artery stenosis. In contrast, both RIDIS after carotid artery narrowing and RIccA_DIS, the difference of RI prior to and after narrowing, achieved marked statistical significance （P 〈 0. 05 ）. A diagnostic accuracy of 77.6% （ sensitivity： 57. 1%, specificity：96.7% ） was reported for RICCA-DIS 1〉 0. 215 in patients with 70% - 99% carotid artery stenosis. Conclusion： RICCA-DISmay apply for exclusion of 70% -99% carotid artery stenosis ,but not being a surrogate for grading vascular stenosis.
出处
《广州医学院学报》
2012年第2期31-33,共3页
Academic Journal of Guangzhou Medical College
关键词
颈动脉狭窄
阻力指数
彩色多普勒
carotid artery stenosis
resistance index
color Doppler ultrasonography
