Is Routine Continuous EEG for Traumatic Brain Injury Beneficial?

Area of Science:

• Neurology
• Neurosurgery
• Critical Care Medicine

Background:

• Severe traumatic brain injury (TBI) increases seizure risk.
• Continuous electroencephalography (cEEG) can detect subclinical seizures post-TBI.
• The routine use of cEEG after TBI is debated.

Purpose of the Study:

• To determine the incidence of subclinical seizures detected by cEEG in moderate to severe TBI patients.
• To evaluate the clinical characteristics of TBI patients with and without detected seizures.
• To inform guidelines on the use of cEEG monitoring after TBI.

Main Methods:

• Retrospective analysis of 106 moderate to severe TBI patients undergoing cEEG within 7 days of admission.
• Data collected included demographics, injury severity (head AIS), and antiseizure prophylaxis.
• Comparison of clinical characteristics between patients with and without cEEG-detected seizures.

Main Results:

• Subclinical seizures were identified in only 3.8% of TBI patients.
• Patients with seizures were older (80 vs 54 years) and had higher head AIS scores (5.0 vs 4.0).
• Most patients (93%) were on antiseizure prophylaxis during cEEG monitoring.

Conclusions:

• The low incidence of subclinical seizures detected by cEEG in TBI patients challenges the benefit of routine monitoring.
• Older age and severe head injury were associated with detected seizures.
• Recommend cEEG monitoring for TBI patients only when clinically indicated due to cost and low yield.