Gestational diabetes & diabetes in pregnancy

Treatment of women with mild gestational diabetes mellitus decreases the risk of adverse perinatal outcomes

Diabetes MetabPublished Retrospective cohort study

Authors' conclusion

The diagnosis of GDM using the two-step OGTT fails to identify subgroups of women with mild hyperglycemia that would benefit from treatment to lower the risk for adverse maternal and neonatal outcomes. Treatment of women with mild hyperglycemia decreased the risk of LGA and birthweight >4000 g by 3-fold.

Study context

Population
Women with singleton pregnancies >32-week gestation and intermediate hyperglycemia (FPG 5.1–5.2 mmol/L, 1 h PG 10.0–10.5 mmol/L, or 2 h PG 8.5–8.9 mmol/L at 75 g oral glucose tolerance test (OGTT)), two tertiary care centers11,553 charts reviewed
Participants
630 women
Exposure
Untreated vs treated intermediate hyperglycemia
  • Untreatedn = 334
  • Treatedn = 296reference
Outcome
Adverse maternal and neonatal outcomes
Methodological detailstwo tertiary care centres, chart review
  • Two tertiary care centres
  • Chart review

Main finding

As reported in the abstract

Adjusted odds ratio

6.02

P = 0.002

gestational hypertension

Adjusted odds ratio

3.73

P < 0.001

Large for gestational age (LGA)

Adjusted odds ratio

3.35

P = 0.001

birthweight > 4000 g

NNT to prevent one LGA birth
11
NNT to prevent 1 birthweight > 4000 g
13

Observational data: associations, not effects.

Original publication

Treatment of women with mild gestational diabetes mellitus decreases the risk of adverse perinatal outcomes. Diabetes Metab. Published 17 June 2023. doi:10.1016/j.diabet.2023.101458

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