Effect of overweight and obesity on pregnancy and birth outcomes

ABSTRACT

OBJECTIVES: To determine the effect of maternal overweight and obesity on pregnancy and birth outcome. DESIGN AND METHODS: This prospective study invited 160 women who attended their first antenatal visit at the University Hospital of the West Indies to participate in the study between June 2012 and February 2013. Maternal demographics, socioeconomic status, past medical and obstetric history, complications in pregnancy and birth outcome were collected. Body mass index (BMI) categories were created. Descriptive statistics reporting means ñ SD, Analysis of Variance (ANOVA), Chi Squared Test and regression analyses to determine whether maternal BMI or weight were independent predictors of birth and placental size were performed. RESULTS: Of the 160 women recruited, 126 (78.8%) were used for final analysis. There was an even distribution of mothers in each BMI category. A significant difference in blood pressure was seen between normal weight and obese women (systolic BP p = 0.002, diastolic BP p = 0.01). There was no statistical difference in women who developed an illness in pregnancy and in the admission rates across BMI categories (p = 0.92; p = 0.09 respectively). There was no significant difference in birth outcome across BMI categories. CONCLUSION: Overweight or class I obese women did not have an increased risk of adverse maternal and birth outcomes as compared to women with a normal BMI.