Jakobovits A, Jörn H
Szülészeti és Nögyógyászati Klinika, Aacheni RWT Egyetem, Orvostudományi Kar.
Orv Hetil. 1993 Sep 26;134(39):2139-42.
Blood flow velocity waveforms in the fetal middle cerebral arteries and umbilical arteries were studied with color flow imaging in 21 pregnancies complicated by oligohydramnios. According to the authors results 3 groups of fetuses may divided: 1. the blood flow in both vessels are normal; 2. the impedance rises to flow within the middle cerebral artery, but blood flow in the umbilical arteries remain normal; 3. the impedance to flow decrease in the middle cerebral arteries, therefore the blood supply of brain improve. On the other hand the impedance of blood flow in umbilical arteries are abnormally large. Results of the study show that the blood flow in these two arteries reacts not on the same manner in cases of the oligohydramnios and this may shed light on the different pathogenetic factors too.
在21例合并羊水过少的妊娠中，采用彩色血流成像技术研究了胎儿大脑中动脉和脐动脉的血流速度波形。根据作者的结果，胎儿可分为3组：1. 两条血管的血流均正常；2. 大脑中动脉内血流阻抗升高，但脐动脉血流仍正常；3. 大脑中动脉内血流阻抗降低，因此脑供血改善。另一方面，脐动脉血流阻抗异常增大。研究结果表明，在羊水过少的情况下，这两条动脉的血流反应方式不同，这也可能有助于揭示不同的发病因素。
