Farquharson R G, Depares J
Eur J Obstet Gynecol Reprod Biol. 1984 Oct;18(3):121-5. doi: 10.1016/0028-2243(84)90009-1.
Umbilical cord vein and artery blood samples were taken at birth from 26 cases of breech presentation delivered vaginally or by caesarean section. All babies were full term and there were no congenital abnormalities. The blood samples were analysed for pH level and progesterone concentration. The cord artery pH was found to correlate strongly with the cord vein progesterone concentration. The cord vein progesterone correlated strongly with the cord artery concentration, showing fetal abstraction of progesterone.
对26例经阴道分娩或剖宫产的臀位分娩病例在出生时采集脐带静脉和动脉血样本。所有婴儿均为足月产，且无先天性异常。对血样本进行pH值水平和孕酮浓度分析。发现脐动脉pH值与脐静脉孕酮浓度密切相关。脐静脉孕酮与脐动脉浓度密切相关，表明胎儿对孕酮的摄取。
