Abstract:
:We reviewed the prognostic significance of preoperative EEG findings in 25 patients who underwent functional hemispherectomy. Bilateral independent epileptogenic foci, found in five patients, generally indicate a less satisfactory outcome, with only three of the five patients becoming seizure free following hemispherectomy. In contrast, abnormalities of background activity over the "good" hemisphere, multifocal epileptic activity confined to the side of operation, or bilaterally synchronous discharges were associated with a good outcome and should not be considered as contraindications to operation. Postoperatively, discharges may occur in the functionally isolated frontal and occipital cortex, which are benign, with no other clinical significance than showing that the isolated cortex remains viable and continues to generate epileptogenic potentials.
journal_name
Neurologyjournal_title
Neurologyauthors
Smith SJ,Andermann F,Villemure JG,Rasmussen TB,Quesney LFdoi
10.1212/wnl.41.11.1790subject
Has Abstractpub_date
1991-11-01 00:00:00pages
1790-4issue
11eissn
0028-3878issn
1526-632Xjournal_volume
41pub_type
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