正常孕妇子宫动脉和胎儿脐动脉的多普勒血流

Doppler Blood Flow of Uterine Artery and Umbilical Artery in Healthy Pregnant Women

应用Acuson 128彩色电脑超声仪,检查了90名正常孕妇各孕周的子宫动脉和胎儿脐动脉血流、建立了血流指标的正常范围和数学方程,同时探讨了不同的检查者和检查时间及同一血管不同检查部位对血流指标测定值的影响。结果表明:随着孕周的增加,正常孕妇子宫动脉和胎儿脐动脉血管阻力下降,血流量渐增加;超声多普勒血流检查有较好的重复性,检查者间和不同检查时间之间的测定值变异小;脐动脉和子宫动脉的受检部位应选择在脐动脉近胎盘端,近胎盘一侧子宫动脉的上行支。

In this study the umbilical artery and uterine artery blood flow was measured by Acuson 128 color computer ultrasound in 90 healthy pregnant women, and the reference ranges and mathematical models of its indices were established. The variation of observers and measurement time and the effect of different areas of the same vessel on measured blood flow values were also studied. The results show reducing of resistance and increasing of blood flow of the umbilical and uterine arteries in healthy pregnancy with increased gestational age. Doppler blood flow measurement has a good repeatability and is worth while to be used universally. The Doppler signals shound be recorded from near placenta part of umbilical artery and upper branch of uterine artery in a side near to placenta.