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Related Experiment Videos

The auditory evoked potential and paediatric anaesthesia

S W O'Kelly1, D C Smith, S N Pilkington

  • 1Shackleton Department of Anaesthesia, Southampton General Hospital.

British Journal of Anaesthesia
|October 1, 1995
PubMed
Summary

Auditory evoked responses (AER) in children under two years old are often unreliable due to irregular patterns and superimposed ECG artifact. Modifications to current methods may be needed for pediatric anesthesia practice.

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Area of Science:

  • Neuroscience
  • Anesthesiology
  • Pediatrics

Background:

  • Auditory evoked responses (AER) are used to assess auditory pathway function.
  • Reliable AER measurement is crucial in pediatric anesthesia for monitoring neurological status.

Purpose of the Study:

  • To evaluate the reliability of AER in children undergoing general anesthesia.
  • To identify age-related differences in AER patterns and potential confounding factors.

Main Methods:

  • Examined raw electroencephalogram (EEG) and AER in 35 children (3 days to 13 years) under general anesthesia.
  • Presented binaural stimuli at 6.12 Hz, recording EEG with specialized software.
  • Averaged 512 sweeps (125 ms duration) to generate AER.

Main Results:

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  • AER patterns were irregular in children under 2 years old.
  • Children older than 2 years exhibited AER patterns similar to adults.
  • ECG artifact, synchronized with heart rate, often superimposed EEG in younger children.

Conclusions:

  • AER may be unreliable in children under 2 years old.
  • Current AER methodology may require modification for pediatric anesthetic applications.
  • Further research is needed to optimize AER techniques for infants and young children.