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Eur Neurol. 2004;51(3):153-6. Epub 2004 Mar 12.

Predicting nonepileptic seizures utilizing seizure frequency, EEG, and response to medication.

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  • 1Montana Epilepsy Program, Great Falls, MT 59405, USA. ansdocs@yahoo.com

Abstract

The objective was to develop criteria that would prompt evaluation with video EEG monitoring in order to shorten the time to diagnosis of nonepileptic seizures. Over a period of 3 consecutive years, all patients being seen for seizures or the consideration of seizures meeting the following criteria were admitted for video EEG monitoring: (1) at least two events per week, (2) refractory to at least two medications, and (3) no prior EEG studies with epileptiform abnormalities after at least two attempts. A total of 13 patients met all three criteria, 11 of these patients had nonepileptic seizures, yielding a positive predictive value of 0.85. The median time from onset of symptoms until referral to the study institution was 3 years, with a range of 0-15 years. The median time from the first patient visit to a definitive diagnosis on video EEG monitoring was 1 month, with a range of 0-7 months. Patients meeting these three criteria frequently have nonepileptic seizures. These patients should undergo video EEG monitoring in a timely fashion to clarify the diagnosis.

Copyright 2004 S. Karger AG, Basel

PMID:
15017116
[PubMed - indexed for MEDLINE]
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