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Related Experiment Videos

Serial visual evoked potentials and outcome in term birth asphyxia.

S C Muttitt1, M J Taylor, J S Kobayashi

  • 1Division of Neonatology, University of Toronto, Ontario, Canada.

Pediatric Neurology
|March 1, 1991
PubMed
Summary

Visual evoked potentials (VEPs) accurately predict neurodevelopmental outcomes in infants with birth asphyxia. Serial VEP testing provides reliable prognostic information for managing neonatal hypoxic-ischemic encephalopathy.

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Area of Science:

  • Neonatal Medicine
  • Neuroscience
  • Pediatric Neurology

Background:

  • Birth asphyxia is a leading cause of neonatal mortality and morbidity.
  • Predicting neurologic outcomes in survivors, especially with moderate hypoxic-ischemic encephalopathy, remains challenging.
  • Visual evoked potential (VEP) measures cortical function and reflects central nervous system changes due to asphyxia.

Purpose of the Study:

  • To investigate the relationship between serial VEPs and neurodevelopmental outcomes at 18 months in term infants with birth asphyxia.
  • To assess the accuracy, sensitivity, and specificity of VEPs in predicting outcomes.
  • To evaluate VEP utility in clinical management.

Main Methods:

  • Serial VEPs were performed on 36 term infants with documented birth asphyxia.

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  • Neurodevelopmental outcomes were assessed at 18 months of age.
  • VEPs were analyzed in relation to clinical outcomes and asphyxia severity (Sarnat and Sarnat criteria).

    • Main Results:

    • Fourteen neurologically intact infants had normal VEPs within the first week.
    • Twenty-two infants had adverse outcomes (death or significant handicap); 20 had persistent abnormal VEPs beyond day 7.
    • Abnormal VEPs predicted abnormal outcomes with 100% accuracy, 91% sensitivity, and 100% specificity.
    • In moderately asphyxiated infants, VEPs showed 100% accuracy, sensitivity, and specificity.

    Conclusions:

    • VEPs correlate well with neurodevelopmental outcomes in term infants experiencing birth asphyxia.
    • Serial VEP testing provides accurate prognostic information crucial for clinical management.
    • VEPs are a valuable tool for predicting outcomes in neonatal hypoxic-ischemic encephalopathy.