Maternal obesity and gestational weight gain
Summary
Obese women gain less weight during pregnancy but are more likely to exceed recommendations. Maternal obesity, not weight gain, increases risks for complications like pre-eclampsia and C-sections.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Public Health Nutrition
Background:
- Gestational weight gain (GWG) is crucial for maternal and fetal health.
- Obesity is a growing concern in pregnancy, impacting outcomes.
- Understanding GWG in relation to BMI categories is essential for risk assessment.
Purpose of the Study:
- To analyze gestational weight gain (GWG) across different body mass index (BMI) categories.
- To investigate the association between GWG and pregnancy complications.
- To differentiate the impact of maternal obesity versus GWG on adverse outcomes.
Main Methods:
- Prospective cohort study including 604 women recruited in the first trimester.
- Calculation of Body Mass Index (BMI) based on initial weight and height.
- Measurement of weight at 38 weeks' gestation to determine GWG.
- Collection of clinical details to assess pregnancy complications.
Main Results:
- Obese women had lower mean GWG (10.4 kg) compared to normal BMI women (12.6 kg) (p < 0.001).
- Despite lower GWG, obese women were more likely to exceed recommended GWG guidelines.
- Maternal obesity, not the amount of GWG, was significantly associated with increased risks of induction of labor, cesarean section, and pre-eclampsia.
Conclusions:
- Obese women tend to gain less weight but exceed recommended GWG limits more frequently.
- Maternal obesity is a stronger predictor of pregnancy complications than GWG itself.
- Clinical focus should prioritize managing maternal obesity to mitigate pregnancy risks.
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