[Body weight and gestational outcomes in women with high normotension during pregnancy]

To investigate the pre-pregnancy body mass index(BMI), gestational weight gain(GWG)and gestational outcomes in women with high normotension during pregnancy.

The clinical data of 1500 pregnant women who recieved antenatal care and delivered in Songjiang District Maternal and Child Hospital, Shanghai from 2015 to 2017 were retrospectively analyzed. The women were divided into high normotension group, normotension group and hypertensive disorder of pregnancy (HDP) group with 500 cases in each group. The general information, pre-pregnancy body mass index, gestational weight gain and gestational outcomes were analyzed.

There were significant differences in pre-pregnancy BMI and GWG between the high normotension group and the normotension group (all P<0.017), and there was significant difference in pre-pregnancy BMI between the high normotension group and HDP group (P<0.017). In terms of adverse pregnancy outcomes, the incidence of oligohydramnios, placental abruption, postpartum hemorrhage, fetal distress and small for gestational age infant were higher in the high normotension group than those in the normotension group, but the differences were not of statistical significance (all P>0.017); the incidence of oligohydramnios, placental abruption, cesarean section, postpartum hemorrhage, premature delivery and small for gestational age infant in HDP group were higher than those in high normotension group (all P<0.01). In high normotension women with adverse gestational outcomes, the proportion of low GWG or too much GWG was higher and the proportion of normal GWG was lower than those in high normotension women without adverse gestational outcomes (all P<0.01).

Pre-pregnancy BMI and GWG are correlated with pregnancy blood pressure and gestational outcomes. Reasonable intervention to gestational weight gain of pregnant women with high normotension is of significance to improve the gestational outcomes.