Document Detail


The localizing yield of sphenoidal and anterior temporal electrodes in ictal recordings: a comparison study.
MedLine Citation:
PMID:  12366735     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To compare the localizing yield of sphenoidal electrodes placed under fluoroscopic guidance (SEs) and anterior temporal electrodes (ATEs) in ictal recordings from a group of patients with seizure disorders of anterior temporal origin. METHODS: We compared ictal recordings of 156 seizures obtained with SEs and ATEs from 40 consecutive patients with seizures of anterior temporal origin. Four electroencephalographers reviewed ictal recordings independently and blind to the patients' identity, presurgical data, and inclusion of ATEs or SEs. Outcome variables included (a) number of correctly localized seizures with SE and ATE recordings by at least three raters; (b) number of ictal foci in which all seizures were localized only with SEs; and (c) number of seizures in which SEs identified the ictal onset > or =5 s earlier than ATEs. RESULTS: Interrater agreement among the four raters was significantly greater with SE than with ATE recordings (p < 0.0001). The number of seizures correctly localized was significantly greater with SEs (n = 144) than with ATEs (n = 99; p < 0.0001). All the seizures [n = 36 (23%)] originating from 14 ictal foci (29%) in 11 patients (27.5%) were localized only with SEs. Finally, the ictal onset was detected at SEs > or =5 s earlier than at ATEs in 67 (43%) seizures originating from 33 (69%) foci in 30 (75%) patients. CONCLUSIONS: SEs improve interrater agreement in the localization of seizures of anterior temporal origin, and in about one fourth of patients, SEs add ictal data not identified by ATEs.
Authors:
Andres M Kanner; Jaime Parra; Antonio Gil-Nagel; Arnoldo Soto; Sue Leurgans; Jorge Iriarte; Leyla deToledo-Morrell; Susan Palac
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Epilepsia     Volume:  43     ISSN:  0013-9580     ISO Abbreviation:  Epilepsia     Publication Date:  2002 Oct 
Date Detail:
Created Date:  2002-10-07     Completed Date:  2002-11-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2983306R     Medline TA:  Epilepsia     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1189-96     Citation Subset:  IM    
Affiliation:
Department of Neurological Sciences, Rush Medical College, and Rush Epilepsy Center, Rush-Presbyterian St. Luke's Medical Center, Chicago, Illinois 60612, USA. akanner@rush.edu
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Brain Mapping / methods
Electrodes, Implanted*
Electroencephalography / methods*,  statistics & numerical data
Epilepsy, Temporal Lobe / diagnosis*,  physiopathology,  surgery
Female
Fluoroscopy / methods
Heart Septum
Humans
Male
Middle Aged
Sphenoid Bone*
Temporal Lobe / physiopathology*,  surgery
Comments/Corrections
Comment In:
Epilepsia. 2003 May;44(5):732-3; author reply 733   [PMID:  12752477 ]

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


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