血管回声跟踪技术评价健康孕妇妊娠晚期颈动脉弹性的改变

E-tracking technique in evaluating carotid artery elasticity in late pregnancy and pregnancy concurred with hy-pertension

目的探讨血管回声跟踪(E-Tracking,ET)技术在健康孕妇妊娠晚期颈动脉弹性改变中的应用价值。方法对妊娠晚期健康孕妇45名和该年龄段的非妊娠健康女性38名应用ET技术检测双侧颈总动脉的硬化度(β)、弹性系数(Eρ)、动脉顺应性(AC)、膨大系数(AI)及单点脉搏波传导速度(PWVβ)及二维结构[内膜中层厚度(IMT)]的测量。并对所得数据进行统计学分析。结果妊娠组β、Eρ、AI、PWVβ与非妊娠健康组比较明显升高,AC降低,差异有统计学意义(P<0.05)。结论血管回声跟踪技术在评价妊娠晚期健康孕妇血管弹性、内皮功能方面具有一定的价值。

Objective To explore the function of carotid arterial elasticity in late pregnancy in the way of quantitatively detected by echo tracking technique in hypertensive disorders in pregnancy. Methods 45 cases of normal late pregnancy and the age of non-pregnant 38 female cases were studied. High resolution ultrasound and echo traeking technique was used to measure the vascular elastic indexes, such as stiffiless parameter （13）, pressure-strain elasticity modulus （El3）, arterial compliance （AC）, augmentation index （AI） and one-point pulse wave velocity （PWVβ）, and two-dimensional structure（IMT） of bilateral common carotid arteries, then the data were analyzed statistically. Results In normal late pregnancy group, β, Ep, AI, PWVβ were significantly higher compared wilh the non-pregnant group; AC was lower, and the differerrces were significant （P〈0.05）. Conclusion The echo tracking technique is valuable in assessing the vascular elasticity and endothelial function of normal pregnancy