Hernández CJ, Varela BJ, Álvarez NS, García S

Language: Spanish
References: 18
Page: 11-17
PDF size: 261.05 Kb.

ABSTRACT

Objective: To evaluate the superficial electroencephalographic characteristics in patients with refractory epilepsy from the Neurophysiologic Service of Centro Médico Nacional 20 de Noviembre.
Patients and method: In a prospective study, 43 patients with refractory epilepsy were included. It were made four interictal studies in each subject. 10-20 system electrodes placement and a conventional activation maneuvers were used. Visual analysis was made for diagnostic interpretation.
Results: 58.1% were female and 41.9% male. Groups from 20 to 29 years old and from 40 to 49 years old were the most frequent; both were 55.8% of sample. The first study showed abnormalities in 94% with focal alterations in 82.4% of them and generalized alterations in 11.6%, normal studies were obtained in 6%. In the second study abnormalities were found in 97.7% with focal alterations in 88.5% and generalized alterations in 9.2%, normal study in 2.3%. In the third register 95.3% were abnormal studies of which were focal alterations in 86%, generalized alterations in 9.3% and without alterations in 4.6%. In the fourth register 93% of abnormal register was found, 83.7% with focal alterations, 9.3% widespread alterations and 7% of them was normal.
Conclusions: Conventional register electroencephalogram is an excellent diagnostic method to detect electrical abnormalities in patients with refractory epilepsies. Interictal left temporal focal alterations were the most frequent.

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