Opioid exposure on the preterm brain: qualitative and quantitative MRI analysis

S de Munck1, F Savvopoulos2, J Dudink3

  • 1Department of Paediatric Surgery, Erasmus MC Sophia Children's Hospital, Rotterdam, The Netherlands.

Abstract

Insights

Neonatal opioid exposure in preterm infants is linked to worse early childhood neurodevelopmental outcomes. However, early MRI brain measures did not predict these long-term effects.

Area of Science:

  • Neonatal neuroscience
  • Developmental pediatrics
  • Neuroimaging

Background:

  • Opioid exposure in neonatal intensive care units (NICUs) is common for preterm infants.
  • The impact of neonatal opioid exposure on neurodevelopmental outcomes requires further investigation.
  • The role of early brain MRI measures in modifying this association is unclear.

Purpose of the Study:

  • To determine if neonatal opioid exposure affects neurodevelopmental outcomes in preterm infants.
  • To assess if early qualitative (lesions) or quantitative (volumetric) brain MRI measures modify this association.

Main Methods:

  • Retrospective cohort study of 280 preterm infants (≤30 weeks gestation).
  • Brain MRI at ~30 weeks postmenstrual age (PMA) for injury scoring and volumetric analysis.
  • Neurodevelopmental assessment at ages 2 (Bayley-III) and 5 (WPPSI-III, M-ABC-2).
  • Multivariable regression and interaction models analyzed associations.

Main Results:

  • Opioid exposure correlated with lower cognitive scores at age 2 and poorer motor scores at age 5.
  • Increased risk of intraventricular hemorrhage and post-hemorrhagic ventricular dilatation observed with opioid use.
  • No significant association found between opioid exposure and brain volumes or lesion presence.
  • No significant interaction identified between opioid exposure and brain measures on neurodevelopmental outcomes.

Conclusions:

  • Neonatal opioid exposure is associated with poorer neurodevelopmental outcomes in early childhood.
  • Early MRI-assessed brain injury or volumes did not appear to modify the association.
  • Longitudinal studies and advanced imaging may offer deeper insights into opioid's long-term neurodevelopmental effects.

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