颈总动脉闭塞患者颈动脉血流的彩超特征研究

摘要

目的 研究颈总动脉闭塞患者颈动脉血流的彩超特征.方法 选取三亚市人民医院2010年1月至2014年12月经彩超检查确诊的颈总动脉闭塞患者50例作为观察组,选取彩超检查正常的健康者50例作为对照组.比较两组受检人员的颈内动脉、颈外动脉和椎动脉的收缩期峰值血流速率、舒张末期血流速率、平均血流速率和阻力指数.结果 观察组患者患病侧颈外动脉血流方向为逆向.与对照组比较,观察组患者患病侧颈内动脉的收缩期峰值血流速率、舒张末期血流速率、平均血流速率以及阻力指数均显著降低,差异均具有统计学意义(P<0.05);观察组患者健康侧颈外动脉、椎动脉以及患病侧椎动脉的收缩期峰值血流速率、舒张末期血流速率、平均血流速率以及阻力指数均显著升高,差异均具有统计学意义(P<0.05).结论 颈总动脉闭塞患者的颈内动脉压降低,颈外动脉和椎动脉的血流速率均增大,颈外动脉能够通过侧支循环倒灌颈内动脉,增加的侧支循环血流代偿入颅供血.%Objective To study the ultrasound characteristics of carotid artery blood flow in patients with ca-rotid artery occlusion.Methods Fifty patients with common carotid artery occlusion in the People's Hospital of San-ya City were selected on as the study group,and 50 healthy individuals showed normal in color Doppler ultrasound ex-amination were enrolled as the control group.The peak systolic velocity,end diastolic velocity,mean blood flow veloc-ity and resistance index of internal carotid artery,external carotid artery and vertebral artery were compared between the two groups.Results The blood flow direction of external carotid artery on the diseased side was reverse for the study group patients.Compared with the control group,the peak systolic velocity,end diastolic velocity,mean blood flow velocity and resistance index of internal carotid artery on the diseased side in the study group were significantly decreased (P<0.05).The peak systolic velocity,end diastolic velocity,mean blood flow velocity and resistance index of external carotid artery and vertebral artery on the healthy side,vertebral artery on the diseased side in the study group increased significantly (P<0.05).Conclusion Internal carotid artery pressure of patients with carotid artery oc-clusion is decreased,and the blood flow rate of the external carotid artery and vertebral artery is increased.The exter-nal carotid artery can flow backward to internal carotid artery with collateral circulation,and the increased collateral circulation compensates blood flow into the cranial blood flow.