Journal article
Misleading EEG Lateralization Associated With Midline Shift
Journal of clinical neurophysiology, Vol.34(6), pp.542-545
11/01/2017
DOI: 10.1097/WNP.0000000000000385
PMID: 28682826
Abstract
Midline discharges, lateralized periodic discharges, and seizures have been described with ipsilateral lesions that result in midline shift (MLS). Periodic discharges and seizures arising contralateral to a known lesion have not previously been described as a sign of MLS. We present four patients with focal brain lesions, resulting in MLS and epileptiform discharges arising from the contralateral hemisphere. Patient 1 underwent a right anterior temporal lobectomy. On postoperative day 2, computed tomography demonstrated a right to left MLS of 12 mm, and EEG was remarkable for left temporal nonconvulsive status epilepticus. Patient 2 experienced a subarachnoid hemorrhage, which was more prominent on the left. Computed tomography after craniotomy demonstrated left to right MLS of 6 mm, and EEG was remarkable for right lateralized periodic discharges. Patient 3 had a right subdural hematoma and underwent craniotomy for evacuation. On postoperative day 3, computed tomography demonstrated a right MLS of 7 mm, and EEG was remarkable for left temporal nonconvulsive status epilepticus. Patient 4 had traumatic brain hemorrhages with maximal left frontotemporal involvement. Six days after the trauma, computed tomography was significant for left to right MLS of 9 mm, and EEG showed right lateralized periodic discharges. Epileptiform discharges and seizures occurring contralateral to a known lesion may be an indicator of MLS.
Details
- Title: Subtitle
- Misleading EEG Lateralization Associated With Midline Shift
- Creators
- Gena R. Ghearing - University of PittsburghSergiu Abramovici - Univ Pittsburgh, Dept Neurol, Pittsburgh, PA 15260 USAAlexandra Popescu - Univ Pittsburgh, Dept Neurol, Pittsburgh, PA 15260 USAMaria E. Baldwin - Univ Pittsburgh, Dept Neurol, Pittsburgh, PA 15260 USA
- Resource Type
- Journal article
- Publication Details
- Journal of clinical neurophysiology, Vol.34(6), pp.542-545
- Publisher
- Lippincott Williams & Wilkins
- DOI
- 10.1097/WNP.0000000000000385
- PMID
- 28682826
- ISSN
- 0736-0258
- eISSN
- 1537-1603
- Number of pages
- 4
- Language
- English
- Date published
- 11/01/2017
- Academic Unit
- Neurology
- Record Identifier
- 9984302202102771
Metrics
15 Record Views