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Fatal outcome in hemiconvulsion-hemiplegia syndrome
Himali Jayakody1, Charuta Joshi
11Division of Child Neurology, University of Iowa Children's Hospital, Iowa City, IA, USA.
Insights
Hemiplegia-hemiconvulsion-epilepsy syndrome can lead to severe complications. A case report details a fatal outcome due to malignant cerebral edema, highlighting the importance of continuous EEG monitoring.
Area of Science:
- Pediatric Neurology
- Epileptology
- Neurocritical Care
Background:
- Hemiplegia-hemiconvulsion-epilepsy syndrome involves unilateral seizures and subsequent hemiplegia.
- Focal status epilepticus can cause unilateral cerebral edema and hemiatrophy.
Observation:
- A 3-year-old girl with this syndrome developed malignant cerebral edema and temporal lobe herniation.
- Voltage suppression on continuous EEG indicated clinical status worsening after seizure freedom.
Findings:
- The case presented with neuroimaging, EEG, and autopsy findings consistent with fatal cerebral edema.
- Literature review revealed no recent reports of malignant edema or death in this syndrome.
Implications:
- This case underscores the potential for severe, fatal complications in hemiplegia-hemiconvulsion-epilepsy syndrome.
- Continuous EEG monitoring is crucial for detecting subtle clinical deterioration in the pediatric intensive care unit.
Abstract:
Hemiplegia-hemiconvulsion-epilepsy syndrome is characterized by prolonged unilateral clonic seizures in a child followed by the development of hemiplegia. Focal status epilepticus results in unilateral cerebral edema of the epileptic hemisphere in the acute phase followed by cerebral hemiatrophy. Literature in the last 5 years does not describe malignant cerebral edema or resultant death. We report a case of a 3-year-old girl with hemiplegia-hemiconvulsion-epilepsy syndrome who died due to malignant cerebral edema and temporal lobe herniation. The first indication of worsening of clinical status after being seizure free was voltage suppression on continuous electroencephalography (EEG). We describe neuroimaging, EEG findings, and neuropathologic findings at autopsy and review pertinent literature. We also evaluate the evolving role of continuous EEG monitoring in the pediatric intensive care unit.
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