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Area-selective stimulus-provoked seizures in post-anoxic coma.
S D Gatzonis1, Ch Zournas, A Michalopoulos
1Department of Neurology, Athens Medical School, Eginition Hospital, Athens, Greece. sgatzon@cc.uoa.gr
Seizure
|August 21, 2002
Summary
This case study details rare stimulus-provoked hemiconvulsive seizures in a patient with severe brain damage. These seizures, triggered by tactile stimuli, highlight the impact of diffuse brain injury on neurological function.
Area of Science:
- Neurology
- Neurophysiology
- Clinical Neuroscience
Background:
- A 70-year-old patient experienced hemiconvulsive seizures following cardiac arrest, metabolic derangement, multiple strokes, and post-anoxic coma.
- The patient presented with complex neurological deficits secondary to severe brain injury.
Observation:
- Hemiconvulsive seizures were observed to be provoked by specific stimuli.
- A light tactile stimulus to the left-trigeminal nerve area frequently triggered seizures.
- Occasional strong tapping on the right-trigeminal nerve area also elicited seizures.
Findings:
- The study identified an extremely rare instance of stimulus-provoked hemiconvulsive seizures.
- Clinical evaluation, electroencephalography (EEG), and computed tomography (CT) brain scans were utilized for assessment.
- The findings suggest a link between diffuse and severe brain damage and the provocation of seizures by sensory input.
Implications:
- This case underscores the potential for sensory stimuli to trigger seizures in individuals with extensive brain damage.
- Understanding these rare seizure phenomena can inform clinical management and diagnostic approaches in neurocritical care.
- The findings contribute to the understanding of aberrant neuronal excitability following severe hypoxic-ischemic events and cerebrovascular accidents.