摘要
Prevalence of overweight and obesity has continued to increase among women of child bearing age all over the world in recent decades. Its impact on short-term and long-term maternal and fetal outcomes continued to grow, such as increased risk of gestational diabetes mellitus, gestational hypertension, preeclampsia, fetal macrosomia, perinatal mortality and chance for cesarean deliveries） What＇s more, underweight before pregnancy also has some hazardous effects on pregnant women and fetus, such as increased risk of delivering infants small for gestational age and preterm delivery.2 The present study determined the prevalence of each body mass index （BMI） group of an obstetric population of the mainland of China, and effects of the maternal pre-pregnancy BMI on multiple antepartum, intrapartum and neonatal outcomes.
Prevalence of overweight and obesity has continued to increase among women of child bearing age all over the world in recent decades. Its impact on short-term and long-term maternal and fetal outcomes continued to grow, such as increased risk of gestational diabetes mellitus, gestational hypertension, preeclampsia, fetal macrosomia, perinatal mortality and chance for cesarean deliveries） What＇s more, underweight before pregnancy also has some hazardous effects on pregnant women and fetus, such as increased risk of delivering infants small for gestational age and preterm delivery.2 The present study determined the prevalence of each body mass index （BMI） group of an obstetric population of the mainland of China, and effects of the maternal pre-pregnancy BMI on multiple antepartum, intrapartum and neonatal outcomes.
