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Ictal ontogeny in Dravet syndrome

 Se Hee Kim  ;  Douglas R. Nordli  ;  Anne T. Berg  ;  Sookyong Koh  ;  Linda Laux 
 Clinical Neurophysiology, Vol.126(3) : 446-455, 2015 
Journal Title
 Clinical Neurophysiology 
Issue Date
OBJECTIVE: To define seizure characteristics of Dravet syndrome (DS) with video-electroencephalographic (EEG) recording in different age groups. METHODS: We reviewed 23 patients with 63 seizures in different age groups: group 1 (0-5years old); group 2 (6-10years old); and group 3 (11 or above). RESULTS: We included 7, 11 and 5 patients in groups 1, 2, and 3 respectively. Younger children had seizures while awake (p=0.005), provoked seizures (p=0.05), focal seizure semiology (p=0.02) and long seizure duration (p=0.0004). Older children had seizures from sleep (p=0.004), generalized seizure semiology (p=0.01) and short seizure duration (p=0.0007). A generalized ictal discharge was the most commonly observed EEG pattern (15/23, 65%), more frequently found in older children (p=0.01). Ten patients (43%) had unclassified seizures or seizures with discordant EEG results. Postictal EEG suppression was found in 9 (39%). CONCLUSION: The phenotype of seizures and ictal EEG patterns in DS vary with age. SIGNIFICANCE: These findings will enhance the recognition of DS in the adolescent population. The incidence of postictal EEG suppression seen in DS is significant because it is a possible biomarker for sudden unexpected death in epilepsy.
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1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Se Hee(김세희) ORCID logo https://orcid.org/0000-0001-7773-1942
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