Accuracy of seizure detection using abbreviated EEG during polysomnography

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society
Nancy Foldvary-SchaeferHarold Morris

Abstract

The purpose of this study was to determine the validity of abbreviated EEG montages for seizure detection during polysomnography. Three electroencephalographers reviewed files containing seizures or nonepileptic events using 8- and 18-channel montages. Files were rated as to whether they contained seizures and assigned a "probability of seizure" score from 0% to 100% reflecting the confidence that it was a seizure. Readers then localized seizures as temporal, frontal, parieto-occipital, or nonlocalized and provided a probability of correct localization with 0% to 100% confidence. Data were analyzed using the Adjusted McNemar Test method of Obochuwski. The probability of seizure score was measured using the receiver operating characteristic curve. Observed agreement was 78% and 84% for 8- and 18-channel montages, respectively. Readers were better able to distinguish seizures from nonepileptic events using the 18-channel montage (P = 0.004). Seizures localized to the temporal and parieto-occipital regions were more likely to be correctly identified and localized. Readers were able to correctly localize 27% and 49% of seizures using the 8- and 18-channel montages, respectively (P < 0.001). Abbreviated EEG montages are inadequate i...Continue Reading

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Citations

Mar 15, 2011·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Martina Vendrame, Sanjeev V Kothare
Mar 15, 2011·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Madeleine Grigg-Damberger, Frank Ralls
Dec 3, 2014·Child and Adolescent Psychiatric Clinics of North America·Madeleine M Grigg-Damberger, Nancy Foldvary-Schaefer
Aug 20, 2008·Pediatric Annals·Madeliene Grigg-Damberger
Jul 20, 2007·Sleep Medicine·Oscar Sans CapdevilaDavid Gozal
Jul 31, 2007·European Journal of Neurology : the Official Journal of the European Federation of Neurological Societies·N N TrajanovicA Ong
Jun 19, 2014·Seizure : the Journal of the British Epilepsy Association·Ellen J BubrickMilena K Pavlova
Jun 30, 2015·Critical Care Clinics·Dawn Eliashiv, Alon Y Avidan
Dec 29, 2018·Annals of the American Thoracic Society·Joanna E Wrede, Lourdes M DelRosso

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