van der Mooren K, van Eyck J, Wladimiroff J W
Department of Obstetrics and Gynecology, Academic Hospital Rotterdam-Dijkzigt, The Netherlands.
Am J Obstet Gynecol. 1989 Feb;160(2):371-4. doi: 10.1016/0002-9378(89)90448-1.
In 16 normal pregnancies the relationship between the blood flow velocity waveform and fetal behavioral states at 37 to 38 weeks' gestation was studied. Whereas behavioral state independency was established for the acceleration time, peak flow velocity demonstrated a statistically significant reduction during active sleep, compared with quiet sleep. These data reflect reduced ductal flow and suggest a redistribution in the left-ventricular and right-ventricular output in favor of the left side of the heart during active sleep. Peak flow velocities in the fetal ductus arteriosus were independent of fetal heart rate.
对16例正常妊娠孕妇在妊娠37至38周时的血流速度波形与胎儿行为状态之间的关系进行了研究。虽然加速时间与行为状态无关，但与安静睡眠相比，主动睡眠期间的峰值流速显示出统计学上的显著降低。这些数据反映了动脉导管血流减少，并提示在主动睡眠期间左心室和右心室输出重新分配，有利于心脏左侧。胎儿动脉导管的峰值流速与胎儿心率无关。
