KOCHEN Sara Silvia
congresos y reuniones científicas
Our experience in stereoelectroencephalography and electrical stimulation in a public hospital
GIAGANTE B; SILVIA O; PATRICIA S; KOCHEN SS; NASSIMBERA A; PRINCICH JP; SANTIAGO C; D ALESSIO L; FERNANDEZ LIMA M; LOMLOMJIAN C; SEOANE P
Congreso; Word Epilepsy Congress; 2019
Purpose: Stereo-electroencephalography (SEEG) is aprocedure performed for patients with intractable epilepsy in order to anatomicallydefine the epileptogenic zone (EZ) and the possible related functional corticalareas. Electrical stimulation (ES) was developed to identify with precisioncortical structures essential to language and motor function, and to triggerseizures. The aim of this study is to analyze electrical stimulation (ES)findings in our patient population.Method: We analyzed 30 patients with drug resistant epilepsy from ourVideo-EEG Unit, who underwent a SEEG as part of a surgical plan. Cognitivetasks performed during ES were: hand tapping, naming, automatic speech(counting), reading and verbal fluency.Results: From the 30 patients, we trigger theirs usual seizures in 25(83.33%), 159 seizures: 25 (15.5 %) were trigger with hippocampus stimulation,15 (9.4 %) amygdala, 30 (18.8 %) other temporal areas, 50 (31.4 %) frontalareas, 15 (9.4 %) parieto-occipital areas, and 24 seizures (15 %) were obtainedwith the stimulation of two continues areas. In 14 (46.6 %) patients westimulate eloquent brain regions: 8 (57 %) language, 7 (50 %) patients wereevaluated the motor area, 2 (14.2 %)sensitive areas, 4 (28.4 %) visual and 5(28.4 %)auditory sensations. We define EZ in all of the patients, 8 (26.6%)mesial temporal lobe epilepsy, 2 (6.6%) other temporal areas, 13 (43.3%)frontal lobe epilepsy, 5 (21.7%) parieto-occipital epilepsy, 2 (6.6%) insularepilepsy.Conclusion: ES is a procedure that allowed us the accurate location ofthe EZ, the temporal space dynamics of the epiletogenic network and thefunctional mapping, to plan cortical resection without overlap and to improvepost-surgical prognosis.