超声多普勒对藏族孕晚期胎儿脐带血流动力学的影响  

The influence of ultrasonic Doppler on the dynamics of umbilical cord blood flow in thethird trimester of Tibetan fetuses

作　　者：李丹 尼玛玉珍[1] Li Dan;Ni Mayuzhen(People’s hospital of Tibet Autonomous Region,Lhasa,Tibet 850000,China)

机构地区：[1]西藏自治区人民医院超声科,西藏拉萨850000

出　　处：《西藏医药》2024年第2期24-25,共2页Tibetan Medicine

基　　金：西藏自治区人民医院院内课题(XZQYY2020029)。

摘　　要：目的探讨超声多普勒对藏族孕晚期胎儿脐带血流动力学的影响。方法选取2022年1月~2023年12月在我院行产前检查及生产的孕产妇69例。以孕周将28~31+6周设为A组、32~35+6周设为B组、36~40周设为C组,用彩色多普勒超声系统自动测量功能,采集胎儿脐动脉的搏动指数(PI)、阻力指数(RI)、脐动脉收缩期/舒张期流速比值(S/D)参数,记录并进行统计学处理。结果PI:A组1.17±0.13、B组1.04±0.14、C组0.96±0.15;RI:0.67±0.06、0.63±0.05和0.60±0.06;RI:3.10±0.52、2.87±0.51和2.53±0.40;PI、RI及S/D在不同孕周之间均有统计学差异,随着孕周增长呈下降趋势。结论高原地区(>3000米)正常妊娠胎儿脐带胎盘循环阻力随着孕周增加逐渐减低,孕晚期胎儿脐动脉PI、RI及S/D平均值较平原地区高。Objective To investigate the effect of ultrasonic Doppler on the umbilical cord blood flow dynamics of Tibetan fe⁃tuses in the third trimester. Methods: A total of 69 pregnant women who underwent prenatal examination and delivery in ourhospital from January 2022 to December 2023 were selected. Group A (28~31+6 weeks of gestation), group B (32~35+6 weeksof gestation) and group C (36~40 weeks of gestation). The pulsatility index (PI), resistance index (RI) and systolic/diastolic veloc⁃ity ratio (S/D) of fetal umbilical artery were collected by the automatic measurement function of color Doppler ultrasound system. Results: PI: group A 1.17±0.13, group B 1.04±0.14, group C 0.96±0.15;RI: 0.67±0.06, 0.63±0.05 and 0.60±0.06;RI: 3.10±0.52, 2.87±0.51 and 2.53±0.40;PI, RI and S/D were statistically different among different gestational weeks, and showed adownward trend with the increase of gestational weeks. Conclusions: The umbilical cord placental circulation resistance of nor⁃mal pregnant women in plateau area (>3000 m) gradually decreases with the increase of gestational age, and the umbilical arteryPI, RI and S/D in the third trimester are higher than those in plain area.

关 键 词：超声多普勒 胎儿脐动脉 高原地区 孕晚期 

分 类 号：R445.1[医药卫生—影像医学与核医学] R714.5[医药卫生—诊断学]