Gabbe S G, Ettinger B B, Freeman R K, Martin C B
Am J Obstet Gynecol. 1976 Oct 1;126(3):353-5. doi: 10.1016/0002-9378(76)90549-4.
Impairment of umbilical cord blood flow has been associated with periodic fetal heart rate changes termed "variable decelerations." These patterns may be observed after amniotomy. A chronic fetal rhesus monkey preparation has been used to investigate this clinical observation. Loss of amniotic fluid produced variable deceleration patterns, while restoration of amniotic fluid volume eliminated such changes. These experimental data demonstrate that amniotic fluid may be critical in protection of the cord and maintenance of normal umbilical cord blood flow.
脐带血流受损与称为“变异减速”的周期性胎儿心率变化有关。这些模式可能在人工破膜后观察到。一种慢性胎儿恒河猴模型已被用于研究这一临床观察结果。羊水流失产生了变异减速模式，而羊水量的恢复消除了此类变化。这些实验数据表明，羊水对于保护脐带和维持正常脐带血流可能至关重要。
