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Adaptation of Microelectrode Array Technology for the Study of Anesthesia-induced Neurotoxicity in the Intact Piglet Brain
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Anesthesia and Developing Brains: Unanswered Questions and Proposed Paths Forward

Caleb Ing1, David O Warner, Lena S Sun2

  • 1Departments of Anesthesiology, Columbia University Vagelos College of Physicians and Surgeons, New York, New York; the Department of Anesthesiology, Mailman School of Public Health, Columbia University, New York, New York.

Anesthesiology
|January 11, 2022
PubMed

Insights

Anesthetic exposure in children shows no link to intelligence deficits but may affect behavior. Further research is needed to understand potential neurotoxicity and behavioral outcomes in pediatric patients.

Area of Science:

  • Neuroscience
  • Developmental Pediatrics
  • Anesthesiology

Background:

  • Animal models suggest anesthetic agents disrupt neurodevelopment.
  • Human evidence regarding anesthetic neurotoxicity in children is mixed.
  • Identifying a clear phenotype of anesthetic-induced injury in children has been difficult.

Purpose of the Study:

  • To describe expert consensus and disagreement on anesthetic neurotoxicity in children.
  • To summarize preclinical and clinical evidence on anesthetic effects on neurodevelopment.
  • To propose future clinical research directions and compare anesthetic agents to other neurotoxins.

Main Methods:

  • Review of preclinical animal studies and clinical human trials.
  • Analysis of neurodevelopmental outcomes, including intelligence and behavior.
  • Expert opinion synthesis regarding anesthetic neurotoxicity.

Main Results:

  • Brief or single early anesthetic exposure in children is not linked to broad intelligence deficits.
  • Behavioral deficits are more consistently reported in human studies and align with nonhuman primate findings.
  • The concept of anesthetic neurotoxicity in children remains debated.

Conclusions:

  • While broad intelligence appears unaffected by early anesthetic exposure, behavioral outcomes warrant further investigation.
  • Behavioral deficits may represent a key phenotype of anesthetic neurotoxicity in pediatric populations.
  • Continued research is crucial to clarify the long-term neurodevelopmental effects of anesthetics in children.

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