Abstract
Aims/IntroductionTo evaluate whether the neonatal birthweight (NBW) is associated with early postpartum glucose intolerance in women with gestational diabetes mellitus.Materials and MethodsA total of 1,113 women diagnosed with gestational diabetes mellitus who completed an oral glucose tolerance test at 6–9 weeks postpartum between 1 April 2014 and 8 January 2020 were included in this observational prospective cohort study. They were grouped by neonatal birthweight quartiles, and the odds ratios of postpartum glucose intolerance for different levels of neonatal birthweight were assessed.ResultsA lower NBW quartile was associated with an increased maternal risk of postpartum glucose intolerance after gestational diabetes mellitus. The adjusted odds ratios for maternal glucose intolerance were 1.69 (95% confidence interval 1.13–2.51) in the lowest NBW quartile (NBW 1,980–2,930 g) when compared with the highest NBW quartile (NBW 3,410–4,610 g). The association between lower NBW and maternal glucose intolerance was significantly stronger in women who delivered a girl. Additionally, NBW ≥3,100 g appears to be associated with a lower risk of maternal glucose intolerance postpartum.ConclusionsOur findings suggest that low NBW is a previously unrecognized risk factor for maternal glucose intolerance after gestational diabetes in early postpartum in South China.
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