Related Experiment Video
Updated: Jun 25, 2026
Application of an Amplitude-integrated EEG Monitor (Cerebral Function Monitor) to Neonates
Published on: September 6, 2017
A pilot study of continuous limited-channel aEEG in term infants with encephalopathy
Russell Lawrence1, Amit Mathur, Sylvie Nguyen The Tich
1Department of Pediatrics, St Louis Children's Hospital, Washington University, St Louis, MO 63110, USA. Lawrence_r@kids.wustl.edu
Insights
Limited-channel amplitude integrated electroencephalogram (aEEG) accurately detects seizures in encephalopathic infants. This monitoring method shows a trend toward reduced seizure burden when visible to clinicians.
Area of Science:
- Neonatal neurology
- Clinical neurophysiology
- Pediatric critical care
Background:
- Neonatal encephalopathy poses significant management challenges.
- Accurate seizure detection is crucial for optimal infant outcomes.
- Conventional EEG-video (cEEG) is resource-intensive.
Purpose of the Study:
- To assess the accuracy and feasibility of limited-channel amplitude integrated electroencephalogram (aEEG) for seizure monitoring in encephalopathic infants.
- To evaluate the impact of visible vs. blinded aEEG monitoring on seizure burden.
Main Methods:
- Encephalopathic infants underwent 72-hour limited-channel aEEG monitoring with a seizure event detector.
- Simultaneous 12-hour conventional EEG-video (cEEG) was recorded.
- Infants were randomized to blinded or visible aEEG monitoring; clinical teams interpreted detected events in the visible group.
Main Results:
- The seizure event detector identified 55% of 1116 seizures, with improved detection for longer seizures (>60 seconds: 87%).
- Bedside physicians accurately distinguished true seizures from false positives using the aEEG algorithm.
- The visible monitoring group showed a trend toward a 52% reduction in seizure burden compared to the blinded group.
Conclusions:
- Limited-channel aEEG monitoring is accurate and feasible for detecting seizures in encephalopathic infants.
- aEEG monitoring compares favorably to cEEG.
- Visible aEEG monitoring is associated with a potential reduction in seizure burden.
Objective:
To evaluate the accuracy, feasibility, and impact of limited-channel amplitude integrated electroencephalogram (aEEG) monitoring in encephalopathic infants.
Study Design:
Encephalopathic infants were placed on limited-channel aEEG with a software-based seizure event detector for 72 hours. A 12-hour epoch of conventional EEG-video (cEEG) was simultaneously collected. Infants were randomly assigned to monitoring that was blinded or visible to the clinical team. If a seizure detection event occurred in the visible group, the clinical team interpreted whether the event was a seizure, based on review of the limited-channel aEEG. EEG data were reviewed independently offline.
Results:
In more than 68 hours per infant of limited-channel aEEG monitoring, 1116 seizures occurred (>90% clinically silent), with 615 detected by the seizure event detector (55%). Detection improved with increasing duration of seizures (73% >30 seconds, 87% >60 seconds). Bedside physicians were able to accurately use this algorithm to differentiate true seizures from false-positives. The visible group had a 52% reduction in seizure burden (P = .114) compared with the blinded group.
Conclusions:
Monitoring for seizures with limited-channel aEEG can be accurately interpreted, compares favorably with cEEG, and is associated with a trend toward reduced seizure burden.
