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Updated: Jun 24, 2026

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Published on: April 5, 2011
[Electroencephalography in status epilepticus: Glossary, protocol and interpretation]
P Gelisse1, P Thomas, N Engrand
1Unité médicochirurgicale de l'épilepsie, hôpital Gui-de-Chauliac, 80, avenue Fliche, 34295 Montpellier cedex 05, France. p-gelisse@chu-montpellier.fr
Electroencephalography (EEG) aids in diagnosing and managing status epilepticus (SE), confirming seizure cessation, and identifying subclinical seizures. It guides treatment, especially for refractory SE, and helps differentiate SE from other conditions.
Area of Science:
- Neurology
- Clinical Neurophysiology
Context:
- Status epilepticus (SE) presents with diverse clinical and electroencephalographic (EEG) patterns.
- Differentiating SE from other conditions like psychogenic seizures or encephalopathies can be challenging based on clinical signs alone.
Purpose:
- To outline the utility of EEG in the diagnosis, management, and prognostication of status epilepticus (SE).
- To propose a standardized protocol, guidelines, and vocabulary for EEG interpretation in SE.
Summary:
- EEG is crucial for diagnosing non-convulsive SE and guiding treatment in refractory cases.
- EEG helps confirm SE termination, detect subclinical seizures, and distinguish SE from mimics.
- Periodic epileptiform discharges in SE can be controversial, requiring clinical correlation.
Impact:
- Improved diagnostic accuracy and timely management of status epilepticus.
- Enhanced understanding and interpretation of EEG findings in SE for clinicians.
- Facilitation of evidence-based protocols for EEG use in SE management.
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