高、低踝肱指数的颈动脉超声探测

Carotid artery ultrasound detection of high and lowankle- brachial indexes

目的 分析高、低踝肱指数颈动脉内中膜厚度与斑块的发生率，探讨亚临床血管病变的筛查与诊断切点。 方法 对213例受试者进行踝肱血压测试，将所测得的踝肱血压数据分为≤0.9的低踝肱指数组、0.91～1.29的正常踝肱指数组和≥1.3的高踝肱指数组；同时进行超声仪探测，对比三组间颈动脉内中膜厚度及颈动脉斑块发生率，寻找出高发组群。 结果 低踝肱指数、正常踝肱指数、高踝肱指数各组，颈动脉内膜中层厚度分别为1.04±0.14mm、0.61±0.08mm、0.83±0.13mm；颈动脉斑块发生率分别为90.48%、18.52%、45.24%，呈U型分布；颈动脉内中膜厚度及颈动脉斑块发生率高、低踝肱指数组与踝肱指数正常组比较，均P＜0.05。 结论 ABI＞1.3与ABI＜0.9的高、低踝肱指数者，均为动脉粥样硬化的高发群体，应重点监测、预防干预。

Objective This paper analyses the incidence of high and low ankle-brachial index carotid intima-media thickness（IMT） and plaque to explore screening and diagnostic cutpoint of subclinical vascular alterations. Methods By testing ankle-brachial blood pressure of 213 volunteers, the results can be separated into low ankle-brachial index group （≤0.9）,normal ankle-brachial index group （0.91～1.29）,and high ankle-brachial index group （≥1.3）;meanwhile, by ultrasound detection, the authors compare the incidence of carotid intima-media thickness（IMT） and plaque among the three groups, and find out the high incidence group. Results As to the low ankle-brachial index group, normal ankle-brachial index group, and high ankle-brachial index group, carotid intima-media thickness are 1.04±0.14mm、0.61±0.08mm、0.83±0.13mm respectively; the incidences of carotid plaque are 90.48%、18.52%、45.24% respectively, and display U type; compared carotid intima-media thickness（IMT） and plaque high incidence group to low ankle-brachial index group and normal ankle-brachial index group, P of the three groups are all 〈0.05. Conclusion ABI〉1.3 high ankle-brachial index group and ABI〈0.9 low ankle-brachial index group are Arteriosclerosis high incidence groups, and should be monitored, prevented and intervened.