Analysis of pregnancy and neonatal outcomes in primiparas with different pre-pregnancy BMI and gestational weight gain
Objective To analyze the pregnancy and neonatal outcomes of the primiparas with different pre-pregnancy BMI and gestational weight gain(GWG).Methods The clinical data of 3 531 primiparas were retrospectively analyzed.According to pre-pregnancy BMI,the primiparas were divided into groups of A(BMI<18.5 kg/m2,373 cases),B(18.5 kg/m2≤BMI<24.0 kg/m2,1 986 cases),C(24.0 kg/m2≤BMI<28.0 kg/m2,766 cases)and D(BMI≥28.0 kg/m2,406 cases).According to GWG,group A was subdivided into groups of A1(GWG<11.0 kg),A2(11.0 kg≤GWG≤16.0 kg)and A3(GWG>16.0 kg),group B was subdivided into groups of B1(GWG<8.0kg),B2(8.0 kg≤GWG≤14.0 kg)and B3(GWG>14.0 kg),group C was subdivided into groups of C1(GWG<7.0 kg),C2(7.0 kg≤GWG≤11.0 kg)and C3(GWG>11.0 kg),and group D was subdivided into groups of DI(GWG<5.0 kg),D2(5.0 kg≤GWG≤9.0 kg)and D3(GWG>9.0 kg).The general data,pregnancy and neonatal outcomes were compared among the groups.Results The age,pre-delivery weight,pre-delivery BMI and neonatal weight in groups of B,C and D were higher than those in group A(P<0.05).GWG was lower in group D than that in groups of A,B and C(P<0.05).The pre-delivery weight and pre-delivery BMI in group C and group D were higher than those in group B(P<0.05).There were significant differences in the proportions of Cesarean section,gestational hypertension,gestational hyperglycemia,preterm birth,macrosomia and low birth weight among the groups of A,B,C and D(P<0.05).There were statistical differences in the proportions of Cesarean section,gestational hypertension,gestational hyperglycemia,preterm birth,macrosomia and low birth weight among the different GWG primiparas groups(P<0.05).Conclusion Pre-pregnancy BMI and GWG are closely related to the pregnancy and newborn outcomes.Strengthening pre-pregnancy and pregnancy management,controlling pre-pregnancy BMI within normal range and rationally controlling pregnancy weight gain can effectively improve the pregnancy and newborn outcomes.