Related Experiment Video
Updated: Jun 17, 2026

Recording Brain Electromagnetic Activity During the Administration of the Gaseous Anesthetic Agents Xenon and Nitrous Oxide in Healthy Volunteers
Published on: January 13, 2018
Processed EEG Monitoring During Pediatric Procedural Sedation: Correlation Between the Narcotrend Index and the
Hendryk Schneider1, Daniel Matheisl1, Martin Kuntz1
1Division of Neonatology and Pediatric Intensive Care Medicine, Center for Pediatrics, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
The Narcotrend Index (NI) shows a moderate to good correlation with the Pediatric Sedation State Scale (PSSS) for assessing pediatric procedural sedation. This processed EEG monitoring may help prevent over- or under-sedation in children.
Area of Science:
- Pediatric Anesthesiology
- Neurophysiology
- Clinical Monitoring
Background:
- Objective assessment of pediatric sedation depth is challenging.
- Processed electroencephalogram (pEEG) systems like the Narcotrend monitor offer continuous sedation depth information.
- Maintaining spontaneous breathing and protective reflexes during sedation is crucial in children.
Purpose of the Study:
- To investigate the correlation between the Narcotrend Index (NI) and the Pediatric Sedation State Scale (PSSS).
- To evaluate the utility of pEEG monitoring for procedural sedation in children.
- To assess sedation depth during propofol and fentanyl administration.
Main Methods:
- Included children and adolescents (6 months to 17 years) undergoing procedural sedation.
- Assessed sedation depth using the Narcotrend monitor and PSSS.
- Calculated Spearman's rank correlation coefficient to analyze the NI and PSSS relationship.
Main Results:
- Analyzed 311 paired measurements from 29 patients.
- Found a moderate to good correlation between NI and PSSS (r=0.61).
- Median NI for deep sedation (PSSS 2) was 39 (IQR 30-50).
Conclusions:
- The Narcotrend Index (NI) correlates acceptably with the Pediatric Sedation State Scale (PSSS).
- pEEG monitoring with NI can be a valuable adjunct for optimizing pediatric procedural sedation.
- This monitoring may help prevent both over-sedation and inadequate sedation in pediatric patients.
Related Concept Videos
Stages of General Anesthesia
Parenteral Anesthetics: Overview
