Analysis of the initial ictal phenomenon in patients with temporal lobe epilepsy

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Abstract

We aimed to assess the localizing value of the initial semiological element in temporal lobe epilepsy (TLE). Video-EEG-documented seizures of 97 adult TLE patients were studied in relation to seizure origin (left versus right; mesial versus extra-mesial). Strikingly, seizures with mesial onset started with very few ictal phenomena, while seizures of extra-mesial origin began with a larger variety of ictal elements. Furthermore, following noticeable distributions were observed for the mesial group: (i) aura was the most common initial ictal phenomenon in the total patient collective, occurring significantly more frequently in mesial than in extra-mesial seizure onset. Aura appeared most often in seizures of left mesial origin. (ii) Vocalization presented a trend towards mesial left seizure origin. (iii) Oral automatisms showed a trend towards mesial seizure origin. Following noticeable distribution was observed for the extra-mesial group: In patients without aura, restlessness as initial ictal phenomenon appeared exclusively in seizures of extra-mesial right origin. Finally, behavioral arrest showed a trend towards left-sided seizure origin. In conclusion, the initial ictal element may add useful information concerning differentiation of seizure onset in TLE. © 2010 British Epilepsy Association.

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Hoffmann, J. M., Elger, C. E., & Kleefuss-Lie, A. A. (2010). Analysis of the initial ictal phenomenon in patients with temporal lobe epilepsy. Seizure, 19(4), 217–221. https://doi.org/10.1016/j.seizure.2010.02.005

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