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A Murine Model of Dengue Virus-induced Acute Viral Encephalitis-like Disease
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Electrographic Seizures in Patients with Acute Encephalitis
Tanuwong Viarasilpa1,2, Nicha Panyavachiraporn1,2, Gamaleldin Osman1
1Department of Neurology, Henry Ford Hospital, 2799 W Grand Blvd, Detroit, MI, 48202, USA.
Neurocritical Care
|September 12, 2018
Summary
Electrographic seizures occur in 41% of encephalitis patients. Low sodium and brain imaging abnormalities are linked to these seizures, but aggressive treatment may minimize their clinical impact.
Area of Science:
- Neurology
- Neurophysiology
Background:
- Clinical seizures are common in encephalitis, potentially leading to poor outcomes.
- Continuing electroencephalography (cEEG) is crucial for detecting subclinical seizures in altered consciousness.
Purpose of the Study:
- To determine the frequency and risk factors of electrographic seizures in encephalitis patients with altered consciousness.
- To assess the clinical impact of these seizures using cEEG.
Main Methods:
- Retrospective analysis of 54 encephalitis patients undergoing cEEG monitoring.
- Identification of electrographic seizures and associated clinical and EEG findings.
Main Results:
- Electrographic seizures were detected in 41% of patients.
- Seizures correlated with lower serum sodium, cortical abnormalities, and specific EEG patterns (LPDs, delta background, low voltage, focal slowing).
- No association found between electrographic seizures and short-term clinical outcome.
Conclusions:
- Approximately 40% of acute encephalitis cases involve electrographic seizures.
- Low serum sodium, cortical abnormalities, and EEG findings are associated factors.
- Aggressive treatment may mitigate the clinical impact of electrographic seizures in encephalitis.
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