Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-12-01T00:28:09.275Z Has data issue: false hasContentIssue false

Chapter 24 - Status Epilepticus

from Part III - Specific Conditions

Published online by Cambridge University Press:  24 June 2021

Neville M. Jadeja
Neville M. Jadeja
Affiliation:
University of Massachusetts Medical School
Get access

Summary

SE is defined as 5 minutes or longer of continuous clinical and/or electrographic seizure activity or recurrent seizures without interval recovery; t1 refers to the time point beyond which there is failure of mechanisms responsible for seizure termination or initiation of mechanisms which lead to abnormally prolonged seizures, and t2 refers to the time point beyond which there are long term consequences due to neuronal injury, death, and alteration of neuronal networks. Semiologically, SE can be classified as with or without prominent motor features. Convulsive SE may evolve into NCSE in a significant minority after convulsive activity ceases. NCSE may be diagnosed on EEG in a significant minority of critically ill patients. EPC may not be associated with ictal activity on surface EEG. De novo absence SE may be seen in older individuals in the setting of abrupt benzodiazepine withdrawal. They may have a previous or family history of IGE.

Keywords

convulsive status epilepticusnonconvulsive status epilepticusepilepsia partialis continuaabsence statustonic statusclonic statusatonic statusmyoclonic status
Type
Chapter
Information
How to Read an EEG , pp. 230 - 238
Publisher: Cambridge University Press
Print publication year: 2021

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Brophy, G, Bell, R, Alldredge, A, et al. Neurocritical Care Society Status Epilepticus Guideline: guidelines for the evaluation and management of status epilepticus. Neurocritical Care. 2012;17:3–23.CrossRefGoogle ScholarPubMed
Scott, RC, King, MD, Gadian, DG, Neville, BG, Connelly, A. Hippocampal abnormalities after prolonged febrile convulsion: a longitudinal MRI study. Brain. 2003 Nov 1;126(11):2551–7.CrossRefGoogle ScholarPubMed
Trinka, E, Cock, H, Hesdorffer, D, et al. A definition and classification of status epilepticus – report of the ILAE Task Force on Classification of Status Epilepticus. Epilepsia. 2015 Oct;56(10):1515–23.CrossRefGoogle ScholarPubMed
Verma, A, Radtke, R. EEG of partial seizures. Journal of Clinical Neurophysiology. 2006 Aug 1;23(4):333–9.CrossRefGoogle ScholarPubMed
Yuan, F, Yang, F, Li, W, et al. Nonconvulsive status epilepticus after convulsive status epilepticus: clinical features, outcomes, and prognostic factors. Epilepsy Research. 2018 May 1;142:53–7.CrossRefGoogle ScholarPubMed
Pender, RA, Losey, TE. A rapid course through the five electrographic stages of status epilepticus. Epilepsia. 2012 Nov;53(11):e193–5.CrossRefGoogle ScholarPubMed
Jette, N, Claassen, J, Emerson, RG, Hirsch, LJ. Frequency and predictors of nonconvulsive seizures during continuous electroencephalographic monitoring in critically ill children. Archives of Neurology. 2006 Dec 1;63(12):1750–5.CrossRefGoogle ScholarPubMed
Thomas, JE, Reagan, TJ, Klass, DW. Epilepsia partialis continua: a review of 32 cases. Archives of Neurology. 1977 May 1;34(5):266–75.Google Scholar
Thomas, P, Lebrun, C, Chatel, M. De novo absence status epilepticus as a benzodiazepine withdrawal syndrome. Epilepsia. 1993 Mar;34(2):355–8.CrossRefGoogle ScholarPubMed
Zhang, YX, Liu, JR, Jiang, B, et al. Lance–Adams syndrome: a report of two cases. Journal of Zhejiang University SCIENCE B. 2007 Sep 1;8(10):715–20.CrossRefGoogle ScholarPubMed

Save book to Kindle

To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×