Nonconvulsive Status Epilepticus: EEG Analysis in a Large Series
- 1 January 1994
- Vol. 35 (1) , 42-47
- https://doi.org/10.1111/j.1528-1157.1994.tb02910.x
Abstract
We analyzed EEG characteristics comprehensively in a large series of nonconvulsive status epilepticus (NCSE) cases. Eighty-five ictal episodes in 78 patients were analyzed. The ictal discharges were generalized (group G) in 59 episodes (69%), diffuse with focal predominance (group GF) in 15 (18%), and focal (group F) in 11 (13%). The morphologies and patterns of persistence varied greatly. Frequency of ictal discharge was also variable and was almost always < 3 Hz. Demonstration of focal epileptic features in response to intravenous (i.v.) diazepam (DZP) and the presence of interictal focal epileptiform discharges in some cases in groups G and GF suggested possible focal onset secondarily generalized in these cases. This study suggests that electrographically NCSE is a highly heterogeneous epileptic state, and i.v. DZP may serve as a valuable diagnostic tool in differentiating generalized from focal onset NCSE.Keywords
This publication has 20 references indexed in Scilit:
- Nonconvulsive Status Epilepticus in Adults: Thirty‐Two Consecutive Patients from a General Hospital PopulationEpilepsia, 1992
- Nonconvulsive Status Epilepticus: High Incidence of Complex Partial StatusEpilepsia, 1986
- Complex partial status epilepticus: A depth‐electrode studyAnnals of Neurology, 1985
- Unilateral Limbic Epileptic Status Activity: Stereo EEG, Behavioral, and Cognitive DataEpilepsia, 1985
- Complex Partial Status EpilepticusArchives of Neurology, 1983
- Nonconvulsive Status Epilepticus following Generalized Tonic-Clonic SeizuresEuropean Neurology, 1982
- Absence Status (Petit Mal Status) With Focal CharacteristicsArchives of Neurology, 1979
- Acute Prolonged Confusion in Later Life as an Ictal StateEpilepsia, 1978
- A glossary of terms most commonly used by clinical electroencephalographersElectroencephalography and Clinical Neurophysiology, 1974
- Differentiation of “Absence Status” and “Temporal Lobe Status”*Epilepsia, 1971