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Baseline EEG pattern on continuous ICU EEG monitoring and incidence of seizures

dc.contributor.author Husain, AM
dc.contributor.author Shah, D
dc.contributor.author Sinha, SR
dc.contributor.author Swisher, Christa Brittany
dc.date.accessioned 2017-03-01T15:11:29Z
dc.date.available 2017-03-01T15:11:29Z
dc.date.issued 2015-01-01
dc.identifier.issn 0736-0258
dc.identifier.uri http://hdl.handle.net/10161/13725
dc.description.abstract © 2015 by the American Clinical Neurophysiology Society..Purpose: To identify the probability of detecting nonconvulsive seizures based on the initial pattern seen in the first 30 minutes of continuous EEG (cEEG) monitoring. Methods: Continuous EEG monitoring reports from 243 adult patients were reviewed, assessing the baseline cEEG monitoring pattern and the presence of seizures during the entire monitoring period. The baseline EEG patterns were classified into nine categories: seizures, lateralized periodic discharges, generalized periodic discharges, focal epileptiform discharges, burst suppression, asymmetric background, generalized slowing, generalized periodic discharges with triphasic morphology, and normal. Results: Overall, 51 patients (21%) had nonconvulsive seizures at any time during cEEG monitoring. Notably, 112 patients had generalized slowing as the initial EEG pattern, and none of these patients were noted to have seizures. Seizure rates among the types of baseline EEG findings were as follows: lateralized periodic discharges (56%, n = 9), burst suppression (50%, n = 10), generalized periodic discharges (50%, n = 2), normal (33%, n = 3), focal epileptiform discharges (31%, n = 35), and asymmetric background (11%, n = 46). Conclusions: Patients with only generalized slowing seen on the baseline EEG recording are unlikely to develop seizures on subsequent cEEG monitoring. Depending on the clinical circumstance, the standard duration of cEEG recording (24-48 hours) may be unnecessary in patients with generalized slowing as their only cEEG abnormality
dc.relation.ispartof Journal of Clinical Neurophysiology
dc.relation.isversionof 10.1097/WNP.0000000000000157
dc.title Baseline EEG pattern on continuous ICU EEG monitoring and incidence of seizures
dc.type Journal article
pubs.begin-page 147
pubs.end-page 151
pubs.issue 2
pubs.organisational-group Clinical Science Departments
pubs.organisational-group Duke
pubs.organisational-group Neurology
pubs.organisational-group Neurology, Epilepsy and Sleep
pubs.organisational-group Neurology, Neurocritical Care
pubs.organisational-group School of Medicine
pubs.publication-status Published
pubs.volume 32
dc.identifier.eissn 1537-1603


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