Maĭkibaeva G A, Grishina A A, Zakharov A N, Kuz'menko V A, Nadirashvili S A
Zh Evol Biokhim Fiziol. 1981 Jul-Aug;17(4):427-30.
During the last half of pregnancy, in fetal guinea pigs studied have been made on the blood pressure in the navelstring artery, the placental connection of the fetus remaining intact. During prolonged experiments, fetal circulation exhibited spontaneous fluctuations in the form of reversible bradycardia and the decrease in the blood pressure. These changes were not associated with motor activity of the fetus. Age peculiarities of these fluctuations reflected the degree of maturity of circulation control mechanisms during prenatal development of animals.
在怀孕的后半期，对豚鼠胎儿进行了研究，在胎儿脐带动脉血压测量过程中，胎儿的胎盘连接保持完整。在长时间的实验中，胎儿循环呈现出自发性波动，表现为可逆性心动过缓和血压下降。这些变化与胎儿的运动活动无关。这些波动的年龄特点反映了动物产前发育过程中循环控制机制的成熟程度。
