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Rev Neurol ; 67(10): 382-386, 2018 Nov 16.
Article in Spanish | MEDLINE | ID: mdl-30403281

ABSTRACT

INTRODUCTION: Fifty million people are affected by epilepsy. Up to 30% are not controlled with the aid of antiepileptic drugs. The vagus nerve stimulator (VNS) is a therapeutic alternative that must be taken into account. AIMS: To determine the effect of the VNS in a cohort of paediatric patients with refractory epilepsy. PATIENTS AND METHODS: A retrospective study of children with a VNS implanted between 2008 and 2017 in a tertiary hospital. Epidemiological, aetiological, clinical and electrophysiological data, along with VNS parameters were analysed. RESULTS: The study included 35 patients, with a mean age when the VNS was implanted of 12.84 years (range: 3.1-18.7 years) and a mean time between onset of epilepsy and implantation of 7.2 years (range: 1.3-17.7 years). The causation was structural in 62.9% of cases. The most frequent epileptic conditions were: Lennox-Gastaut syndrome and focal epilepsy, with a predominance of tonic seizures (57.1%). The video electroencephalogram showed multifocal anomalies (54%) and a pattern of epileptic encephalopathies (34.3%). Intellectual disability was associated in 94% of the cases. The mean of previous antiepileptic drugs was 9.6 ± 3 (range: 4-16). 43% responded to treatment (>= 50% reduction in number of seizures), with a mean reduction of 67.3%, which improved with higher ages of onset of epilepsy. Three patients were seizure-free (8.5%). The number of seizures decreased by 33% at six months and by 47.4% at 24 months. There was also a notable degree of cognitive (57%) and behavioural improvement (53%). In 28% of cases there were some side effects, but in general they were mild. CONCLUSIONS: The VNS is a valid option in refractory epilepsy, with improvements not only in terms of seizures but also regarding cognitive-behavioural aspects, this being very important for the paediatric population.


TITLE: Diez años de experiencia con el estimulador del nervio vago en una poblacion pediatrica.Introduccion. La epilepsia afecta a 50 millones de personas. Hasta un 30% no se controla con farmacos antiepilepticos. El estimulador del nervio vago (ENV) constituye una alternativa terapeutica que hay que valorar. Objetivo. Determinar el efecto del ENV en una cohorte pediatrica con epilepsia refractaria. Pacientes y metodos. Estudio retrospectivo de niños con ENV implantado entre 2008 y 2017 en un hospital terciario. Se han analizado datos epidemiologicos, etiologicos, clinicos, electrofisiologicos y parametros del ENV. Resultados. Se incluyo a 35 pacientes, con una mediana de edad de implantacion de 12,84 años (rango: 3,1-18,7 años) y una mediana de evolucion entre el inicio de la epilepsia y la implantacion de 7,2 años (rango: 1,3-17,7 años). La etiologia fue estructural en el 62,9% de los casos. Cuadros epilepticos mas frecuentes: sindrome de Lennox-Gastaut y epilepsia focal, con predominio de las crisis tonicas (57,1%). El videoelectroencefalograma mostro anomalias multifocales (54%) y un patron de encefalopatia epileptica (34,3%). El 94% asociaba discapacidad intelectual. La media de farmacos antiepilepticos previos fue de 9,6 ± 3 (rango: 4-16). El 43% fueron respondedores (>= 50% reduccion de crisis), con una media de reduccion del 67,3%, mejor cuanto mayor era la edad de inicio de la epilepsia. Tres pacientes quedaron libres de crisis (8,5%). La reduccion de crisis fue del 33% a los 6 meses y del 47,4% a los 24 meses. Mejoria cognitiva (57%) y conductual (53%). El 28% tuvo efectos secundarios, generalmente leves. Conclusiones. El ENV es una opcion valida en la epilepsia refractaria con mejoria no solo de las crisis, sino tambien cognitiva y conductual, con la importancia que ello tiene para la poblacion pediatrica.


Subject(s)
Drug Resistant Epilepsy/therapy , Vagus Nerve Stimulation , Adolescent , Child , Child, Preschool , Female , Humans , Implantable Neurostimulators , Male , Retrospective Studies , Time Factors
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