Document Detail

Usefulness of focal rhythmic discharges on scalp EEG of patients with focal cortical dysplasia and intractable epilepsy.
MedLine Citation:
PMID:  8641147     Owner:  NLM     Status:  MEDLINE    
We examined the significance and frequency of occurrence of rhythmic epileptiform discharges (REDs) on the scalp EEGs of 74 patients with intractable partial epilepsy. We also analyzed the relationship of this abnormality to the continuous epileptiform discharges (CEDs) recorded on ECoG. Both REDs and CEDs had been found to be highly specific and sensitive indicators of focal cortical dysplastic lesions. Thirty-four patients (group I) had focal cortical dysplastic lesions (FCDLs) and 40 (group II) had non-dysplastic structural lesions. REDs were observed in 15 (44%) of the 34 patients of group I and in none of group II. REDs did not occur in isolation, were associated with more intermittent interictal spikes involving other regions, but had a greater (P < 0.05) significance for the localization of the epileptogenic area. A strong relationship was observed between the presence of REDs on scalp EEG and the occurrence of CEDs on ECoG recordings. Twelve (80%) of 15 patients with REDs had CEDs. Focal cortical dysplastic lesions are likely to be present when rhythmic epileptiform discharges are found.
A Gambardella; A Palmini; F Andermann; F Dubeau; J C Da Costa; L F Quesney; E Andermann; A Olivier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Electroencephalography and clinical neurophysiology     Volume:  98     ISSN:  0013-4694     ISO Abbreviation:  Electroencephalogr Clin Neurophysiol     Publication Date:  1996 Apr 
Date Detail:
Created Date:  1996-07-17     Completed Date:  1996-07-17     Revised Date:  2008-09-09    
Medline Journal Info:
Nlm Unique ID:  0375035     Medline TA:  Electroencephalogr Clin Neurophysiol     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  243-9     Citation Subset:  IM    
Department of Neurology and Neurosurgery, McGill University, Montreal, Que., Canada.
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MeSH Terms
Cerebral Cortex / abnormalities*
Child, Preschool
Epilepsies, Partial / diagnosis,  physiopathology*
Magnetic Resonance Imaging
Retrospective Studies

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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