Hecher K, Spernol R, Szalay S
Department of Obstetrics and Gynecology, General Hospital Klagenfurt, Austria.
Arch Gynecol Obstet. 1989;246(3):133-7. doi: 10.1007/BF00934074.
In 19 out of 20 human fetuses we recorded blood velocity waveforms in the renal artery by means of a duplex Doppler sector scanner. One fetus was at 22 weeks gestation, 7 fetuses were between 32 and 35 weeks, and 12 fetuses between 36 and 40 weeks. There was no evidence of intrauterine growth retardation and there was a normal quantity of amniotic fluid in all pregnancies. We also recorded waveforms in the umbilical artery, the descending aorta, and the internal carotid artery. The RI in these vessels showed normal values in all cases. There was no end-diastolic flow in four of the seven fetuses studied at 32 to 35 weeks gestation. The mean RI of fetuses with end-diastolic flow was 0.86 (SD 0.03). The interpretations of these results, and ideas for future studies are discussed.
我们使用双功多普勒扇形扫描仪记录了20例人类胎儿中19例肾动脉的血流速度波形。1例胎儿妊娠22周，7例胎儿在32至35周之间，12例胎儿在36至40周之间。所有妊娠均无宫内生长受限的证据，羊水数量正常。我们还记录了脐动脉、降主动脉和颈内动脉的波形。这些血管的阻力指数在所有病例中均显示正常。在妊娠32至35周研究的7例胎儿中，有4例无舒张末期血流。有舒张末期血流的胎儿平均阻力指数为0.86（标准差0.03）。讨论了这些结果的解释以及未来研究的思路。
