Abstract：Objective To describe the characteristics of obstetric outcomes of adolescent pregnancy. Methods A retrospective case-control study was performed of 316 cases of adolescent pregnancy and 301 cases of adult pregnancy in Maternal and Children’s Health Hospital of Haidian District, Beijing. Results The rates of natural delivery (79.7%), premature delivery (13.0%), and precipitate labor(4.4%) in the adolescent group were higher than those of the adult group (49.5%, 2.3%, and 1.3%, respectively). The rates of preeclampsia (10.1%), anemia (7.6%), fetal growth restriction (3.5%), postpartum hemorrhage (2.8%), cervical laceration (2.8%), and hematoma of vagina (22.4%) in the adolescent group were higher than those of the adult group (4.0%, 1.3%, 1.0%, 0.7%, 0.7%, and 3.7%, respectively). In addition, the rates of low birth weight (5.3%),neonatal malformations(2.5%) and neonatal asphyxia (3.5%) in the adolescent group were higher than the rates in the adult group (1.9%, 0.3%and 1.0%, respectively). The rates of premature rupture of membranes, gestational diabetes mellitus, antepartum hemorrhage, fetal distress and fetal death in the adolescent group were not statistically different from those in the adult group. Conclusion There were substantial differences in the obstetric and neonatal outcomes between the adult group and the adolescent group. Perinatal care targeting to adolescent pregnancy should be strengthened in order to improve the perinatal outcomes.
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