Influence of early pregnancy body mass index(BMI)and gestation weight gain(GWG)on adverse pregnancy outcomes
- Author:
Jing-quan LU
1
;
Zhi-mei WANG
1
;
Qi-ying ZHU
1
Author Information
- Publication Type:Journal Article
- Keywords: early pregnancy body mass index; gestation weight gain; outcome of pregnancy
- From: Chinese Journal of Practical Gynecology and Obstetrics 2019;35(11):1244-1247
- CountryChina
- Language:Chinese
- Abstract: OBJECTIVE: To explore the impact of early pregnancy body mass index(BMI)and weight gain during pregnancy(GWG)on adverse pregnancy outcome in mothers and children.METHODS: The clinical data of 890 primiparas of childbearing age who underwent regular antenatal examination and delivered in the First Affiliated Hospital of Xinjiang Medical University from March to August 2018 were analyzed retrospectively. The cases were divided into low body bass group(BMI<18.5),normal body mass group(18.5≤BMI<25),overweight group(25≤BMI<30),and obesity group(BMI≥30);low GWG group,normal GWG group,excessive GWG group(regardless of early pregnancy BMI grouping,those with GWG below the IOM recommended range were included in the low GWG group,within the recommended range in the normal GWG group,and higher than the recommended range in the excessive GWG group)according to early pregnancy BMI and GWG guideline revised by American Institute of Medicine(IOM)in 2009 based on early pregnancy BMI and GWG;analyze the impacts of early pregnancy BMI and GWG on cesarean section rate,gestational complications and adverse neonatal outcomes.RESULTS: Low body mass group accounted for 15.1%(134 cases),normal body mass group represented 73.0%(650 cases),overweight group occupied 9.9%(88 cases),and obesity group accounted for 2.0%(18 cases).Early pregnancy BMI overweight and obesity increased the risk of cesarean section(OR 2.46,5.20),gestational diabetes(OR 1.86,1.33),gestational hypertensive diseases(OR 4.07,4.53),fetal macrosomia(OR 5.72,2.87)and premature delivery(OR 2.15,9.19). Regardless of early pregnancy BMI,GWG exceeding the IOM recommended weight gain range increased the risk of cesarean section(OR=2.93),gestational diabetes(OR=1.10),gestational hypertensive diseases(OR=1.50)and fetal macrosomia(OR=1.15). Advanced age(>35-40 years old)also increased the risk of cesarean section(OR=6.42),gestational diabetes(OR=4.89),gestational hypertensive diseases(OR=3.98),and premature rupture of fetal membranes(OR=2.48).CONCLUSION: Early pregnancy overweight or obesity,excessive GWG and advanced age will increase cesarean section rate,leading to adverse outcomes in mothers and children. Therefore,it is of great importance to control the weight in the preparation of pregnancy and to increase the weight reasonably during pregnancy.
