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Hyperglycemia and adverse pregnancy outcome study: neonatal glycemia

Boyd E Metzger1, Bengt Persson, Lynn P Lowe

  • 1Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA. bem@northwestern.edu

Pediatrics
|November 17, 2010
PubMed

Insights

Neonatal glucose levels are stable post-birth. Hypoglycemia risk increases with higher cord C-peptide, larger infant size, and maternal glucose levels, suggesting fetal insulin production links.

Area of Science:

  • Perinatology
  • Neonatal Metabolism
  • Endocrinology

Background:

  • Neonatal glucose homeostasis is critical for infant well-being.
  • Understanding factors influencing neonatal glucose levels is essential for identifying at-risk infants.

Purpose of the Study:

  • To characterize neonatal plasma glucose patterns after birth.
  • To investigate associations between neonatal glucose, maternal glucose tolerance, cord C-peptide, and neonatal anthropometrics.

Main Methods:

  • Analysis of 17,094 mother-infant dyads from the Hyperglycemia and Adverse Pregnancy Outcome Study.
  • Maternal oral glucose tolerance tests (OGTT) during gestation.
  • Collection of cord blood and neonatal blood samples for glucose and C-peptide analysis.

Main Results:

  • Neonatal plasma glucose remained stable in the first 5 hours postpartum.
  • Neonatal hypoglycemia showed weak associations with maternal OGTT glucose but strong associations with elevated cord C-peptide.
  • Larger and/or adiposer infants had a higher incidence of hypoglycemia.

Conclusions:

  • Stable neonatal glucose suggests normal postnatal adaptation.
  • Elevated cord C-peptide and increased neonatal size/adiposity are significant risk factors for hypoglycemia.
  • Findings indicate a physiological link between maternal glycemia, fetal insulin production, and neonatal glucose regulation.
Abstract

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