Related Experiment Video
Updated: May 26, 2026
09:16
Use of a Wireless Video-EEG System to Monitor Epileptiform Discharges Following Lateral Fluid-Percussion Induced Traumatic Brain Injury
Published on: June 21, 2019
Electroencephalographic findings in acute subdural hematoma
Leslie A Rudzinski1, Alejandro A Rabinstein, Seung Y Chung
1Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
Summary
Electroencephalogram (EEG) findings in acute subdural hematoma (SDH) patients with epileptiform activity can predict outcomes. Specific EEG patterns correlate with midline shift and early functional status, while improvement over time predicts long-term recovery.
Area of Science:
- Neuroscience
- Neurology
- Clinical Neurophysiology
Background:
- Acute subdural hematoma (SDH) is a critical neurosurgical condition.
- Epileptiform activity on electroencephalogram (EEG) is common in SDH patients.
- Predicting functional outcome in SDH is crucial for patient management.
Purpose of the Study:
- To identify electroencephalogram (EEG) findings that predict functional outcome in patients with acute subdural hematoma (SDH).
- To correlate specific epileptiform discharge patterns with neuroimaging and clinical outcomes.
Main Methods:
- Retrospective review of 24 patients with acute SDH and epileptiform activity on EEG.
- Analysis of EEG findings, including midline and periodic lateralized epileptiform discharges (PLEDs).
- Correlation of EEG data with preoperative CT scans and functional outcomes at discharge and long-term follow-up.
Main Results:
- 87% of patients exhibited epileptiform discharges on EEG.
- Midline and PLEDs were associated with midline shift on CT scans.
- Bilateral, midline, and bilateral independent multifocal discharges correlated with poor early outcomes.
- Improvement in follow-up EEGs predicted good long-term functional outcome.
Conclusions:
- EEG findings are complex but valuable in predicting outcomes for SDH patients with epileptiform activity.
- Specific EEG patterns, such as midline and PLEDs, are linked to structural changes and functional prognosis.
- Serial EEG monitoring can offer insights into long-term functional recovery potential.
