Effects of Gestational Weight Gain on Pregnancy Outcomes According to Siriraj Recommendations in Thai Obese Women

Abstract

Objectives: To evaluate the effect of gestational weight gain on maternal and fetal outcomes according to Siriraj recommendations in Thai obese women.Materials and Methods: This was a retrospective cohort study of obese Thai women with term-singleton pregnancy. We used The Regional Office for Western Pacific Region of WHO (WPRO) BMI criteria for Asians to define obesity. Data was collected from 1 January 2014 to 31 December 2015. Three hundred and eighty patients were included into this study, 235 patients were in obese class I (BMI 25-29.9 kg/m2) and 145 patients were in obese class II (BMI >30 kg/m2). Statistical analyses of adverse maternal and neonatal outcomes between excessive gestational weight gain (GWG) and normal GWG, based on Siriraj recommendations, were assessed.Results: When compare with normal GWG group, excessive GWG in obese class I and obese class II had greater risk of adverse neonatal outcomes including large for gestational age (LGA), macrosomia and higher birth weight, with statistical significance. Excessive GWG in obese class I and obese class II also had statistically-significant higher risk of adverse maternal outcomes, including severe preeclampsia, postpartum hemorrhage (PPH), cephalopelvic disproportion (CPD) and increased rate of cesarean delivery.Conclusion: Obese Thai women with term-singleton pregnancy should have GWG according to Siriraj recommendations. Excessive GWG women were associated with increased risk of LGA, macrosomia and higher birth weight. Adverse maternal outcomes were also greater including preeclampsia, PPH, CPD and increased rate of cesarean section.

Keywords

• gestational weight gain
• obesity
• pregnancy outcomes
• Siriraj recommendations