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Sevoflurane requirements during electroencephalogram (EEG)-guided vs standard anesthesia Care in Children: A

Melody H Y Long1, Evangeline H L Lim1, Gustavo A Balanza2

  • 1Department of Pediatric Anesthesia, KK Women's and Children's Hospital, 100 Bukit Timah Road, 229899, Singapore..

Journal of Clinical Anesthesia
|June 30, 2022
PubMed

Insights

Electroencephalography (EEG)-guided anesthesia reduced sevoflurane use and burst suppression in children undergoing surgery. This method provides real-time brain response visualization, aiding anesthetic titration and potentially improving outcomes.

Area of Science:

  • Anesthesiology
  • Neuroscience
  • Pediatric Critical Care

Background:

  • Intraoperative electroencephalographic (EEG) monitoring offers real-time visualization of brain activity during anesthesia.
  • Titrating anesthetic agents like sevoflurane based on cardiorespiratory parameters alone may not fully capture individual patient responses.
  • Understanding brain response to anesthesia is crucial for optimizing anesthetic depth and minimizing adverse events in pediatric patients.

Purpose of the Study:

  • To evaluate if EEG-guided anesthesia reduces sevoflurane requirements in children compared to standard care.
  • To determine the impact of EEG-guided anesthesia on the incidence of burst suppression and emergence characteristics.
  • To assess the utility of EEG spectrograms in guiding anesthetic management in pediatric patients.

Main Methods:

  • A randomized controlled trial involving 200 children aged 1-6 years undergoing sevoflurane anesthesia for minor surgery.
  • Patients were randomized to either EEG-guided anesthesia (EEG-G) or standard care (SC).
  • In the EEG-G group, sevoflurane was titrated to maintain specific EEG patterns (slow/delta oscillations, avoiding burst suppression) and a patient state index (PSI) between 25-50.

Main Results:

  • The EEG-G group received significantly lower end-tidal sevoflurane concentrations during induction (4.80% vs 5.67%) and maintenance (2.23% vs 2.38%).
  • The incidence of intraoperative burst suppression was lower in the EEG-G group (3.1% vs 10.9%).
  • Pediatric Anesthesia Emergence Delirium (PAED) scores were similar between groups; younger children (<2 years) required higher sevoflurane doses regardless of the group.

Conclusions:

  • EEG-guided anesthesia effectively reduces sevoflurane requirements in pediatric patients undergoing general anesthesia.
  • This approach may decrease the incidence of intraoperative burst suppression without negatively impacting emergence characteristics.
  • Intraoperative EEG monitoring provides valuable insights into brain responses, enabling precise anesthetic titration and highlighting age-related variations in sevoflurane needs.
Abstract

Keywords:
Depth of anesthesia monitoringEEG-guided anesthesiaEEG-monitoring in childrenEmergence deliriumPediatric anesthesiaSevoflurane anesthesia depth

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