Abstract:

Objective To evaluate the effects of pre-gravid body weight, gestational weight gain (GWG) on the prevalence of macrosomia. Methods Healthy pregnancy women with singleton in Renji Hospital and Changning Maternal and Child Health Care Center were recruited for the study. Maternal (age, education, disease history, gestational age, GWG, and triglycerides) and neonatal (gender and birthweight) indexes were obtained according to medical records. Pre-gravid body weight was obtained after delivery by a trained nutritionist and classified by body mass index (BMI). Results A total number of 1 286 pregnancy women aged (28.8±3.7) years were enrolled in the study. The number of undernutrition, normal, and overweight women before pregnancy was 239 (18.6%), 872 (67.8%), and 175 (13.6%), respectively. The mean GWG was (15.4±4.7) kg in our study population. Among them, 16.0% (206/1 286) gained body weight less than low value of GWG recommendation, while 37.9% (488/1 286) were in normal range, and 46.0% (592) exceeded the upper value of recommendation GWG. The mean birth weight was (3 380±384) g and the prevalence of macrosomia was 6.0% (77/1 286). Gestational age, pre-gravid BMI, GWG, and triglyceride level were obvious higher in macrosomia group compared with those in normal birth weight group. Pre-gravid overweight, increase of gestational age and GWG, and hypertriglyceridemia were the risk factors for macrosomia by multivariate logistical regression. Conclusion Pre-gravid overweight, increase of gestational age and GWG, hypertriglyceridemia are closely related with macrosomia.