1311Postpartum weight retention and pregnancy weight gain in women with Gestational Diabetes Mellitus (GDM)

Abstract

Abstract Background Since GDM is important risk factor for type 2 diabetes and maternal obesity can potentiate this outcome, the study sought to describe gestational weight gain and one-year postpartum weight retention (PPWR) in women with GDM. Methods Multicentre cohort study of 598 women with GDM enrolled in prenatal clinics of the Brazilian National Health System and followed by telephone up to 1-year postpartum. Socioeconomic and nutritional data were evaluated in recruitment. Gestational weight gain (GWG) and pre-pregnancy BMI were classified according to Institute of Medicine, 2009. PPWR was the difference between weights 1-year postpartum and pre-pregnancy. Chi-square test compared proportions of PPWR, pre-gestational BMI and GWG. Results Women had mean age 31.2 ± 6.1 years. Mean pre-pregnancy BMI was 30.3 ± 6.5 kg/m², GWG was 9.6 ± 7.3 kg and PPWR was 0.8 ± 6.8. Pre-pregnancy BMI over 25 kg/m² was found in 78%, excessive GWG in 37.6% and PPWR 1-year in 47.7%. PPWR ≥ 5kg was found in 27.6% and was higher in excessive GWG (p < 0.001). Women with excessive GWG, 55.2% had PPWR ≥ 5kg. For all categories of pre-pregnancy BMI, there was higher proportion of PPWR ≥ 5kg in those who had excessive GWG. Conclusions Almost half of women who had GDM presented weight retention in 1-year postpartum. We found more PPWR in who had excessive pregnancy weight gain. Key messages PPWR is common in women with GDM and there is higher proportion of PPWR ≥ 5kg in women with excessive GWG in all pre-pregnancy BMI categories.