Influence of oligohydramnios on perinatal outcome

Objective It is to assess the effect of oligohydramnios in third trimester on the perinatal outcome. Methods Perinatal outcome of 125 cases with oligohydramnios were evaluated by determining the amniotic fluid index (AFI) with B ultrasonography. Results Occurrence of oligohydramnios in 40～42 + th gestational week constituted 9.52% (58/610). Occurrence of oligohydramnios with high-risk pregnancy in 37～39 6/7 gestational week constituted 68.12% (47/69). In 125 cases of oligohydramnios, there were 59 cases of fetal distress, 48 cases of contaminated amniotic fluid of degree Ⅱ and 30 cases of degree Ⅲ, 9 cases of low Apgar's score and no perinatal mortality. The rate of predicting oligohydramnios correctly with AFI was 96.94%. The rate of cesarean section was 92.80%. Conclusion Oligohydramnios is deleterious to perinatal in different period, and pregnancy should be ended.