摘要
目的探讨前置胎盘患者孕中、晚期子宫动脉血流动力学变化规律。方法选取105例孕中、晚期胎盘距宫颈内口距离<20 mm的孕妇作为观察对象,监测其21～26周、28～31周双侧子宫动脉收缩期与舒张末期最大血流速度比值(S/D)、搏动指数(PI)及阻力指数(RI)的平均值,根据孕末期胎盘位置分为前置胎盘组(观察组,31例)和对照组(74例)。结果观察组2次子宫动脉S/D(2.13±0.36、1.87±0.24)、PI(0.80±0.19、0.67±0.14)、RI(0.51±0.07、0.45±0.07)平均值均低于对照组[S/D(2.38±0.48、2.08±0.36)、PI(0.94±0.25、0.80±0.19)、RI(0.55±0.07、0.50±0.08)],差异均有统计学意义(P<0.05)。结论妊娠中晚期子宫动脉血流动力学参数变化与前置胎盘发生有一定相关性。
Objective To investigate the hemodynamic changes of uterine artery in patients with placenta previa during the trimester.Methods Totally 105 pregnant women whose placental edge was within 20 mm from the internal os during the second trimester were selected for observation. The systolic to diastolic velocity ratios (S/D), pulsatility index (PI) and resistance index (RI) of uterine artery were measured for all subjects in the second (21st-26th gestational weeks) and the third (28th-31th gestational weeks) trimester. All subjects were categorized into two groups according to the placenta position measured after 36 weeks gestation: placenta previa group (31 cases) and control group (74 cases).Results The mean values of S/D (2.13±0.36, 1.87±0.24), PI (0.80±0.19, 0.67±0.14) and RI (0.51±0.07, 0.45±0.07) of the uterine artery in the placenta previa group were lower than those in control group [S/D (2.38±0.48, 2.08±0.36), PI (0.94±0.25, 0.80±0.19), RI (0.55±0.07, 0.50±0.08)] (P<0.05).Conclusion The changes of uterine arterial blood flow parameters in middle and late pregnancy are correlated with placenta previa.
作者
武轶伦
陆彧
Wu Yilun;Lu Yu Shanghai(First Maternity and Infant Hospital,Tongji University School of Medicine,Shanghai 201204,China)
出处
《中华生殖与避孕杂志》
CAS
CSCD
北大核心
2018年第11期935-936,共2页
Chinese Journal of Reproduction and Contraception
关键词
前置胎盘
子宫动脉
超声
Placenta previa
Uterine artery
Ultrasound
