Clinical analysis of pregnancy outcomes on 287 full-term pregnancy with oligohydramnios

Objective To explore the impact of oligohydramnios on delivery outcomes of full-term pregnant women and perineonates. Methods A total of 287 cases of full-term pregnant women with oligohydramnios(oligohydramnios group) in the First Affiliated Hospital of Third Military Medical University from January 2013 to December 2014 were selected as study objects, and a total of 300 cases of normal full-term pregnant women in the same period were randomly selected and bringing into control group.The differences of incidence rate of fetal anomaly, prolonged pregnancy, fetal growth restriction(FGR), hypertensive disorders in pregnancy and the cesarean section between two groups, and perineonate outcomes between two delivery ways in each group were compared statistically. Results ① The incidence rate of fetal anomaly, prolonged pregnancy, FGR and hypertensive disorders in pregnancy, and the cesarean section rate in oligohydramnios group were all higher than those of control group, and the differences were statistically significant(1.7% vs 0.3%, χ2=2.83, P<0.01; 13.2% vs 3.0%, χ2=20.88, P<0.05; 3.8% vs 0.6%, χ2=6.70, P<0.01; 7.0% vs 1.6%, χ2=10.11, P<0.05; 82.9% vs 30.7%, χ2=162.76, P<0.01). ② In oligohydramnios group, the average weight of newborns, incidence rate of fetal distress, aspiration pneumonitis of newborns and neonatal asphyxia were all higher in pregnancy with vaginal delivery than those in pregnancy with cesarean section delivery, and the differences were statistically significant [(3 308±346) g vs (3 194±373) g, t=2.03, P<0.05; 36.7% vs 18.1%, χ2=8.46, P<0.05; 32.6% vs 17.6%, χ2=5.52, P<0.01; 30.6% vs 15.6%, χ2=6.22, P<0.01]. Conclusions For full-term pregnancy with oligohydramnios patients, the risk of vaginal delivery is higher than normal amniotic fluid patients.So, strengthen prenatal care and regular prenatal examination may be good to improve delivery outcome. Key words: Full-term pregnancy; Oligohydramnios; Cesarean section; Pregnancy outcome