Abstract
BACKGROUND: To assess the incidence of dysglycaemia and metabolic syndrome and factors associated with them 5 months postpartum in women with gestational diabetes mellitus (GDM) in their last pregnancy. METHODS: We conducted an observational prospective cohort study in 558 women with previous GDM who attended a 5-month postpartum follow-up clinic. Backward elimination was performed to select significant factors for the multivariable logistic regression model. Dysglycaemia (prediabetes and type 2 diabetes (T2D)) and metabolic syndrome were used as outcomes in separate models. RESULTS: Dysglycaemia was diagnosed in 202 (36.2%) women, including 174 (31.2%) with prediabetes and 28 (5.0%) with T2D. Women with dysglycaemia, compared with those with normoglycaemia, were more likely to be of black ethnicity (33.2 vs. 20.5%) and have severe GDM (31.7 vs. 16%), a higher postpartum BMI (29.5 vs. 27.6 kg/m(2)), and metabolic syndrome (20 vs. 7%). Multivariable logistic regression analysis showed that significant predictors of dysglycaemia were black (OR 2.09; 95% CI: 1.27-3.46) and mixed ethnicity (OR 3.05; 95% CI: 1.26-7.42), diagnosis of GDM before 24 weeks gestation (OR 3.05, 95% CI: 1.90-4.91), and treatment of GDM with metformin (OR 1.63; 95% CI: 1.05-2.55) or insulin (OR 2.08; 95% CI: 1.14-3.79) rather than diet alone. Significant predictors of metabolic syndrome were postpartum maternal BMI (OR 5.49; 95% CI: 2.60-11.59) and absence of breastfeeding (OR 2.14; 95% CI: 1.21-3.77). CONCLUSIONS: At 5 months postpartum, a high proportion of women who developed GDM showed evidence of dysglycaemia. Future studies should investigate interventions that could reduce the risk of short- and long-term consequences of suboptimal cardiometabolic health in such women.