探讨正常孕11～14周子宫动脉及螺旋动脉的多普勒超声特征  

Doppler ultrasound characteristics of uterine and spiral artery at 11—14 weeks normal gestation

作　　者：谢亦农[1] 江岚[1] 陈智毅[1] 梁伟翔[1] 严宝妹[1] 蔡款[1] 

机构地区：[1]广州医学院第三附属医院医学超声科,广东广州510150

出　　处：《中国医学影像技术》2012年第12期2220-2224,共5页Chinese Journal of Medical Imaging Technology

基　　金：广东省卫生厅科研项目(A2010272)

摘　　要：目的分析正常孕11～14周子宫动脉及螺旋动脉的多普勒超声的特征。方法选取410名正常孕11～14周孕妇,根据孕周分为Ⅰ组(≥11周且<12周)、Ⅱ组(≥12周且<13周)和Ⅲ组(13周～14周),按胎盘位置分为居中胎盘组、左侧胎盘组和右侧胎盘组;根据阻力指数(RI)分为<0.60组、0.60～0.69组、0.70～0.74组、0.75～0.79组及≥0.80组;分析不同孕周、不同胎盘位置的子宫动脉和螺旋动脉的多普勒超声参数特征,以及子宫动脉不同RI值舒张早期存在α切迹的情况。结果Ⅲ组子宫动脉平均RI值低于Ⅰ组(P<0.05);Ⅲ组平均搏动指数(PI)值低于其他两组(P均<0.05)。居中胎盘组右侧子宫动脉PI低于左侧胎盘组(P<0.05),左、右侧胎盘组子宫动脉收缩期最大血流速度/舒张末期血流速度(S/D)及RI差异无统计学意义(P均>0.05)。左侧胎盘组左侧子宫动脉S/D、RI及PI均低于右侧胎盘组(P均<0.01);右侧胎盘组右侧子宫动脉S/D、RI及PI均低于左侧胎盘组(P均<0.01)。在子宫动脉RI≥0.75的孕妇中,右侧α切迹发生率79.49%(31/39),左侧89.80%(44/49)。螺旋动脉各项多普勒超声参数在不同孕周、不同胎盘位置孕妇间差异均无统计学意义(P均>0.05)。结论正常孕11～14周子宫动脉、螺旋动脉多普勒参数及胎盘位置存在一定特征,可为临床早期诊疗提供参考。Objective To analyze characteristics of Doppler ultrasound of uterine and spiral artery at 11-14 weeks nor- mal gestation. Methods A total of 410 pregnant women were divided into 3 groups according to gestational week, i.e. Ⅰgroup （≥11 weeks and 〈12 weeks）, Ⅱ group （≥12 weeks and 〈13 weeks） and Ⅲ group （13-14 weeks）. They were also divided into 3 groups according to the location of placenta, i.e. central placenta group, placenta on the left side and on the right side. Then the pregnant women were divided into 5 groups according to resistance index （RI） ： RI〈0. 60 group, 0.60-0, 69 group, 0.70-0.74 group, 0. 75-0.79 group and ≥0.80 group. Doppler ultrasound parameters of uterine and spiral artery were measured in different gestational ages and different location of the placenta, while a-notch of RI index values in early diastolic of uterine artery were observed. Results The mean RI value of uterine artery inⅢ group was less than that in Ⅰ group （P〈0. 05）. The mean pulsatility index （PI） of uterine artery in m group was less than that in the other two groups （both P〈0. 05）. PI index value of right uterine artery was lower than that of the left placenta group in central placenta group （P〈0.05）. Systolic-to-diastolic ratio （S/D） and RI index value were not different.among central, left and right placenta groups （both P〉0.05）. In left placenta group, S/D, RI and PI index value of left uterine artery were all lower than those of the right （both P〈0.01）. In right placenta group, S/D, RI and PI index value of right uterine artery were all lower than those of the left （both P〈0.01）. Incidence rate of a-notch detected in the right and left uterine artery （RI≥0.75） was 79.49% （31/39） and 89.80% （44/49）, respectively. There was no significant difference among different gestational weeks and location of the placenta in parameters of spiral artery （all P〉0. 05）. Conclusion There are certain relationship between Doppler ultra

关 键 词：超声检查 产前 子宫动脉 螺旋动脉 妊娠期 早期 

分 类 号：R445.1[医药卫生—影像医学与核医学]