Abstract
Objective
The purpose of this study was to compare maternal weight gain in pregnancy and obstetric outcomes between women with obesity in early pregnancy and those with a normal body mass index (BMI) in early pregnancy.
Methods
This was a retrospective cohort study of women with obesity in early pregnancy and those with a normal BMI who were seen at three teaching hospitals in South-East Nigeria. Statistical analysis was performed using Statistical Package for the Social Sciences version 17.0 software, with descriptive and inferential statistics at the 95% level of confidence.
Results
The study sample consisted of 648 women (324 obese and 324 healthy-weight). The mean age of the obese women was 26.7 ± 5.1 years and that of the healthy-weight women was 26.6 ± 4.9 years. Although both excessive weight gain (odds ratio [OR] 0.35, 95% confidence interval [CI] 0.23–0.54) and inadequate weight gain (OR 0.08, 95% CI 0.04–0.15) were less common in women with early pregnancy obesity than in healthy-weight women, a significantly higher proportion of obese women with excessive weight gain had adverse fetomaternal outcomes. Also, a significantly higher proportion of obese women had specific complications, such as premature rupture of membranes (OR 2.36, 95% CI 1.12–5.04), gestational hypertension/pre-eclampsia (OR 2.31, 95% CI 1.12–5.04), antepartum hemorrhage (OR 2.78, 95% CI 1.02–7.93), gestational diabetes (OR 4.24, 95% CI 1.62–11.74), cesarean delivery (OR 2.3, 95% CI 1.2–5.44), macrosomia (OR 4.08, 95% CI 1.06–8.41), severe birth asphyxia (OR 2.8, 95% CI 1.2–6.63), abnormal Apgar scores (OR 2.67, 95% CI 1.46–4.93), and newborn special care admissions (OR 1.18, 95% CI 1.0–3.29).
Conclusion
Early pregnancy obesity was associated with a wide range of adverse fetomaternal outcomes, and could be a genuine risk factor for increased pregnancy-related morbidity and/or mortality in this population. Interventions to reduce prepregnancy obesity could therefore be useful in this low-resource African setting.
Supplementary table
Table S1 New recommendations from the Institute of Medicine for total weight gain during pregnancy according to prepregnancy BMITable Footnote*
Acknowledgments
We thank Drs Augustine Asogwa, Emeka Onyia, and Ugochukwu Ezenyirioha, as well as the nursing staff of the labor wards at the University of Nigeria Teaching Hospital, Enugu State University Teaching Hospital (ESUTH), and Federal Medical Centre Abakaliki for their assistance with collection of data for this study.
Disclosure
The authors report no conflicts of interest in this work.