Hostname: page-component-6bf8c574d5-gr6zb Total loading time: 0 Render date: 2025-02-23T11:40:38.112Z Has data issue: false hasContentIssue false
  • English
  • Français

Relative Localizing Value of Common Tests used in the Preoperative Investigation of Epileptic Patients

Published online by Cambridge University Press:  18 September 2015

Jean-Marc Saint-Hilaire ,
Francois Richer ,
André Turmel ,
Isabelle Rouleau  and
Guy Bouvier
Jean-Marc Saint-Hilaire*
Affiliation:
Service de Neurologie, Hôpital Notre-Dame, Université de Montréal, Montreal
Francois Richer
Affiliation:
Service de Neurologie, Hôpital Notre-Dame, Université de Montréal, Montreal Université du Québec a Montréal, Montreal
André Turmel
Affiliation:
Service de Neurologie, Hôpital Notre-Dame, Université de Montréal, Montreal
Isabelle Rouleau
Affiliation:
Service de Neurologie, Hôpital Notre-Dame, Université de Montréal, Montreal
Guy Bouvier
Affiliation:
Université du Québec a Montréal, Montreal
*
Service de Neurologie, Hôpital Notre-Dame, 1560 Sherbrooke E., Montréal, Québec, Canada H2L 4M1
Rights & Permissions [Opens in a new window]

Abstract:

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We have compared the relative localizing value of common tests in the presurgical evaluation of epilepsy in 73 patients with depth electrode (SEEG) confirmed epileptogenic foci and excellent surgical outcome. We found the tests of abnormality (CT, amytal, neuropsychology) to be frequently non-informative and often discordant with SEEG. The EEG was concordant with the SEEG in 38% of cases and provided lateralization in 78%. EEG was less localizing than ictal behavior in frontals but not in temporals. The need for SEEG is rather evident in these results but could become attenuated by the development of the localizing power of scalp EEG.

Type
Research Article
Information
Canadian Journal of Neurological Sciences , Volume 18 , Issue S4 , November 1991 , pp. 598 - 600
Copyright
Copyright © Canadian Neurological Sciences Federation 1991

References

REFERENCES

1.Ajmone-Marsan, C.Clinical-electrographic correlations of partial seizures. In: Wada, JA, ed. Modern perspectives in epilepsy. Montreal: Eden, 1978; 76–98.Google Scholar
2.Engel, J, Rausch, R, Lieb, JP, et al. Correlation of criteria used for localizing epileptic foci in patients considered for surgical therapy of epilepsy. Ann Neurol 1981; 9: 215–01224.CrossRefGoogle ScholarPubMed
3.Gloor, P.Contributions of electroencephalography and electrocorticography to the neurosurgical treatment of the epilepsies. In: Purpura, DP, Penry, JK, Walter, RD, eds. Neurosurgical management of the epilepsies. Advances in Neurology vol. 8. New York: Raven Press, 1975; 59–105.Google Scholar
4.Engel, J.Outcome with respect to epileptic seizures. In: Wada, J., ed. Surgical treatment of the epilepsies. New York: Raven Press, 1987; 553–571.Google Scholar
5.Saint-Hilaire, JM, Bouvier, G, Lymburner, J, et al. La stéréoencéphalographie synchronisée avec l’enregistrement visuel et sonore dans l’exploration chronique de l’épilepsie. Union Med Can 1976; 105: 1538–1542.Google Scholar
6.Saint-Hilaire, JM.Presurgical evaluation protocol at Notre-Dame Hospital. In: Wada, J., ed. Surgical treatment of the epilepsies. New York: Raven Press, 1987; 675–676.Google Scholar
7.Achim, A, Richer, F, Wong, P, Saint-Hilaire, JM.Application of Spatio-temporal dipole modeling with a model adequacy test to interictal spikes in Rolandic epilepsy. Electroencephalogr Clin Neurophysiol. In press.Google Scholar
8.Sherg, M.Fundamentals of dipole source potential analysis. In: Hoke, M, Grandori, F, Romani, GL, eds. Auditory evoked magnetic fields and potentials. Adv Audiol. Basel: Karger, 1989; 1–30.Google Scholar
9.Beatty, J, Barth, D, Richer, F, et al. Neuromagnetometry. In: Coles, MGH, Donchin, E, Porges, S, eds. Psychophysiology. New York: Guilford Press, 1986; 26–40.Google Scholar