目的探讨延期妊娠并发羊水过少对母婴的影响。方法采用回顾性分析方法，对延期妊娠分娩的产妇羊水正常组244例及羊水过少组96例进行对比分析。结果羊水过少组中羊水Ⅱ度以上粪染、胎盘成熟Ⅲ+级及胎盘钙化、胎儿宫内窘迫、新生儿窒息率、产后出血率及剖宫产率明显高于羊水正常组。结论羊水过少是胎儿宫内慢性缺氧最敏感的特异性指标，无论是延期妊娠还是过期妊娠一经确珍，应积极引产，估计短时间内不能分娩者，宜行剖宫产结束妊娠。%Objective To study the effects of oligohydramnios in post expected date of confinement pregnancies on both mothers and their babies. Methods 340 cases in post expected date of confinement pregnancies were retrospectively analysed. Women were divided into two groups (Oligohydramnios group, n=96, normal amniotic fluid group, n=244). Results The rate of amniotic fluid turbidity Ⅱ—Ⅲ degree, placental maturity Ⅲ+ degree and calcification, fetal distress, asphyxia neonatorum, labor induced, postpartum hemorrhage and cesarean section in the oligohydramnios group were significantly higher than those in the normal amniotic fluid group. Conclusion In post expected date of confinement pregnancies or prolonged pregnancies, oligohydramnios is a most specific and sensitive marker to diagnose fetal anoxia in uterus. Once it is accurately diagnosed, we must actively terminate the pregnancy. Cesarean section should be the first choice if the vaginal delivery can't be expected to initiate in a short time.
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