van Eyck J, Wladimiroff J W, van den Wijngaard J A, Noordam M J, Prechtl H F
Department of Obstetrics & Gynaecology, Erasmus University Rotterdam, The Netherlands.
Br J Obstet Gynaecol. 1987 Aug;94(8):736-41. doi: 10.1111/j.1471-0528.1987.tb03718.x.
The relation between the blood flow velocity waveform in the fetal internal carotid artery (n = 12) and umbilical artery (n = 15) and fetal behavioural states at 37-38 weeks of gestation was studied. In the fetal internal carotid artery, under standardized fetal heart rate conditions, the pulsatility index (PI), as a measure of peripheral vascular resistance, was significantly lower during behavioural state 2F (active sleep) compared with state 1F (quiet sleep) according to the classification by Nijhuis et al. (1982), suggesting increased fetal cerebral blood flow during state 2F. In the umbilical artery, no significant difference in PI between the two behavioural states could be established. This suggests a fetal origin of the state dependency observed in fetal blood flow velocity waveforms.
研究了妊娠37 - 38周时胎儿颈内动脉（n = 12）和脐动脉（n = 15）的血流速度波形与胎儿行为状态之间的关系。在胎儿颈内动脉中，根据Nijhuis等人（1982年）的分类，在标准化胎儿心率条件下，作为外周血管阻力指标的搏动指数（PI）在行为状态2F（主动睡眠）期间显著低于状态1F（安静睡眠），这表明在2F状态下胎儿脑血流量增加。在脐动脉中，两种行为状态之间的PI没有显著差异。这表明在胎儿血流速度波形中观察到的状态依赖性源于胎儿自身。
