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1.
Rev. neurol. (Ed. impr.) ; 66(5): 147-153, 1 mar., 2018. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-172311

RESUMO

Introducción. La hemisferectomía funcional es una de las técnicas quirúrgicas con intención paliativa que se pueden realizar en pacientes con epilepsia farmacorresistente y síndromes hemisféricos. Se basa en la desconexión neuronal del hemisferio afectado preservando el árbol vascular. Objetivo. Analizar el pronóstico y la seguridad a largo plazo de las hemisferectomías realizadas en nuestro centro. Pacientes y métodos. Revisión retrospectiva de los casos intervenidos, recogiendo las siguientes variables clínicas: edad, sexo, edad de inicio de la epilepsia, tipo de crisis, etiología de la epilepsia, edad de intervención, pronóstico posquirúrgico y posibles complicaciones. El seguimiento mínimo fue de cinco años. Resultados. Cinco pacientes (60% mujeres) fueron intervenidos entre 1999 y 2010. La edad de inicio de la epilepsia fue de 36 meses, y el tiempo de evolución hasta la cirugía, de 7 años. El tipo de crisis más habitual fueron las crisis parciales simples motoras con generalización secundaria (n = 5). Tres pacientes permanecieron libres de crisis tras la cirugía, y otro paciente mejoró más de un 90%. El tiempo medio de seguimiento fue de 13 años. Como complicaciones, una paciente sufrió una meningitis bacteriana sin secuelas posteriores. A los seis años de la cirugía, un paciente presentó una hidrocefalia que requirió la implantación de una válvula de derivación ventriculoperitoneal. Conclusiones. La hemisferectomía funcional constituye un procedimiento quirúrgico eficaz para el tratamiento de pacientes con epilepsia farmacorresistente, patología hemisférica extensa y crisis limitadas a ese hemisferio. Hay complicaciones que pueden aparecer tardíamente, por lo que se aconseja un seguimiento a largo plazo de estos pacientes (AU)


Introduction. Functional hemispherectomy consists in palliative epilepsy surgical procedure usually performed in patients with pharmaco-resistant epilepsy and hemispheric syndromes. It is based on the neural disconnection of the affected hemisphere with preservation of the vascular supply. Aim. To analyze long-term prognosis and safety of the hemispherectomies performed in our institution. Patients and methods. Retrospective analysis collecting the following variables: age, gender, age of epilepsy onset, type of seizures, etiology, age of epilepsy surgery, prognosis and potential surgical complications. All patients had a minimum of five years of follow up. Results. Five patients (60% females) underwent hemispherotomy between 1999 and 2010. Age of epilepsy onset was 36 months and time of evolution until surgery was 7 years. The most frequent type of seizures were simple motor seizures with secondary generalization (n = 5). Three patients remained seizure free persistently after surgery and another patient had a more than 90% improvement. Time of follow up was 13 years. One patient suffered a bacterial meningitis without sequelae. Six years after surgery a patient suffered hydrocephalous requiring ventriculoperitoneal shunt. Conclusions. Functional hemispherectomy constitutes an effective method to treat patients with pharmaco-resistant epilepsy, extensive unihemispheric pathology and seizures limited to that hemisphere. Late complications may occur thus long-term follow-up is needed (AU)


Assuntos
Humanos , Masculino , Feminino , Lactente , Pré-Escolar , Hemisferectomia/métodos , Epilepsia Resistente a Medicamentos/cirurgia , Tempo/análise , Cuidados Paliativos/métodos , Porencefalia/cirurgia , Paresia/cirurgia , Malformações Vasculares do Sistema Nervoso Central/cirurgia
3.
Neurosci Lett ; 398(1-2): 139-44, 2006 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-16448750

RESUMO

This study investigated the effects of mobile-phone-type radiation on the cerebral activity of seizure-prone animals. When rats transformed into an experimental model of seizure-proneness by acute subconvulsive doses of picrotoxin were exposed to 2 h GSM-modulated 900 MHz radiation at an intensity similar to that emitted by mobile phones, they suffered seizures and the levels of the neuronal activity marker c-Fos in neocortex, paleocortex, hippocampus and thalamus increased markedly. Non-irradiated picrotoxin-treated rats did not suffer seizures, and their cerebral c-Fos counts were significantly lower. Radiation caused no such differences in rats that had not been pretreated with picrotoxin. We conclude that GSM-type radiation can induce seizures in rats following their facilitation by subconvulsive doses of picrotoxin, and that research should be pursued into the possibility that this kind of radiation may similarly affect brain function in human subjects with epileptic disorders.


Assuntos
Encéfalo/efeitos da radiação , Telefone Celular , Convulsivantes , Micro-Ondas/efeitos adversos , Picrotoxina , Proteínas Proto-Oncogênicas c-fos/metabolismo , Convulsões/etiologia , Convulsões/metabolismo , Animais , Encéfalo/efeitos dos fármacos , Encéfalo/metabolismo , Masculino , Ratos , Ratos Sprague-Dawley
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