Document Detail

Qualitative and quantitative abnormalities of breath counting during brief generalized 3 Hz spike and slow wave 'subclinical' discharges.
MedLine Citation:
PMID:  8575099     Owner:  NLM     Status:  MEDLINE    
We aimed to validate the technique of breath counting during overbreathing in revealing ictal impairment of cognition during brief generalized 3 Hz spike and slow wave discharges. A retrospective study of 66 patients with video-electroencephalographic documentation of typical absence seizures revealed 8 patients in whom there was no clinical suspicion of absences but who had brief (less than 4 seconds) generalized 3 Hz spike-wave discharges. The only clinical manifestations of the absences were abnormalities in breath counting during overbreathing. These consisted of slowing of speech, delay in counting, repetition of numbers and counting out of sequence combined with delay. Abnormalities were more likely to occur during longer discharges. Detection of these abnormalities led to important changes in the classification of the patients' epilepsies and in the recommendations for treatment. The technique of breath counting during overbreathing is a simple practical and reliable method for detecting even mild cognitive impairment during 3 Hz spike-wave discharges.
S Giannakodimos; C D Ferrie; C P Panayiotopoulos
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical EEG (electroencephalography)     Volume:  26     ISSN:  0009-9155     ISO Abbreviation:  Clin Electroencephalogr     Publication Date:  1995 Oct 
Date Detail:
Created Date:  1996-03-11     Completed Date:  1996-03-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0236454     Medline TA:  Clin Electroencephalogr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  200-3     Citation Subset:  IM    
Department of Clinical Neurophysiology and Epilepsy, St. Thomas' Hospital, London, UK.
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MeSH Terms
Epilepsy / physiopathology
Seizures / physiopathology*

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

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