Functional hemispherectomy: EEG findings, spiking from isolated brain postoperatively, and prediction of outcome.

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

Neurology

journal_title

Neurology

authors

Smith SJ,Andermann F,Villemure JG,Rasmussen TB,Quesney LF

doi

10.1212/wnl.41.11.1790

subject

Has Abstract

pub_date

1991-11-01 00:00:00

pages

1790-4

issue

11

eissn

0028-3878

issn

1526-632X

journal_volume

41

pub_type

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