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Neonatal Glycaemia and Neurodevelopmental Outcomes: A Systematic Review and Meta-Analysis

Rajesh Shah1, Jane Harding1, Julie Brown1

  • 1Liggins Institute, University of Auckland, Auckland, New Zealand.

Neonatology
|November 9, 2018
PubMed

Insights

Neonatal hypoglycemia, a common newborn metabolic issue, is linked to later neurodevelopmental problems like visual-motor and executive function deficits. Further research is needed to establish optimal management strategies for at-risk infants.

Area of Science:

  • Neonatal Medicine
  • Developmental Neuroscience
  • Pediatric Endocrinology

Background:

  • Neonatal hypoglycemia is a prevalent metabolic disturbance in newborns.
  • There is ongoing debate regarding safe blood glucose thresholds due to neurodevelopmental concerns.
  • Existing evidence on long-term neurodevelopmental effects of neonatal hypoglycemia requires systematic evaluation.

Purpose of the Study:

  • To systematically review the association between neonatal hypoglycemia and neurodevelopmental outcomes in childhood and adolescence.
  • To synthesize evidence regarding the impact of early hypoglycemia on cognitive, visual-motor, and executive functions.
  • To identify research gaps concerning the long-term neurodevelopmental sequelae of neonatal hypoglycemia.

Main Methods:

  • Comprehensive literature search across major databases (MEDLINE, EMBASE, CINAHL, PsycINFO) up to February 2018.
  • Inclusion of studies comparing neurodevelopmental outcomes in infants with and without neonatal hypoglycemia, excluding specific congenital disorders.
  • Meta-analysis using inverse variance and fixed-effects models, with risk of bias and quality of evidence assessments (ROBINS-I, GRADE).

Main Results:

  • Eleven studies (12 publications) were included, analyzing data from 1,657 infants.
  • In early childhood, neonatal hypoglycemia was associated with visual-motor impairment (OR=3.46) and executive dysfunction (OR=2.50).
  • In mid-childhood, associations were found with neurodevelopmental impairment (OR=3.62), low literacy (OR=2.04), and numeracy (OR=2.04).

Conclusions:

  • Neonatal hypoglycemia may lead to significant, lasting adverse neurodevelopmental effects manifesting in later childhood.
  • The findings underscore the importance of monitoring neurodevelopmental outcomes in children with a history of neonatal hypoglycemia.
  • Further well-designed randomized controlled trials with long-term follow-up are essential to guide optimal management.
Abstract

Keywords:
Child developmentHypoglycaemiaInfantNeurodevelopmental disordersNewborn

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