Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
Rev Neurol ; 75(s03): S01-S08, 2022 09 30.
Artigo em Espanhol | MEDLINE | ID: mdl-36168136

RESUMO

In Spain organ transplantation constitutes one of the greatest challenges and teamwork of hospital centres. It is estimated that in the year 2020 Spain contributed 19% of all donors to the European Union. The confirmatory support diagnosis recommends by law some complementary techniques in certain cases, including neurophysiological techniques, especially the use of electroencephalogram and evoked potentials. These cases require the clinical neurophysiologist to make the right clinical and technical decisions for the correct performance and interpretation of the same. To date, there is no national consensus on the performance of these techniques. Updated bibliographic review on neurophysiological techniques (electroencephalogram and evoked potentials). Analysis by Delphi method and expert judgment of the working group of the Clinical Neurophysiology Society of the Communities of Valencia and Murcia. Neurophysiological techniques can be a support in the diagnosis of encephalic death, both confirmatory and to shorten observation times. In order to perform them, minimum technical standards are required to allow optimal performance of the studies, especially taking into account medication, hemodynamic situation, absence of hypothermia, and age group. We present the first guide in Spanish elaborated by the Society of Neurophysiology of the Communities of Valencia and Murcia for the performance in our hospitals of neurophysiological techniques in the diagnosis of brain death.


TITLE: Recomendaciones para el empleo de técnicas neurofisiológicas en el diagnóstico de muerte encefálica de la Sociedad de Neurofisiología Clínica de las Comunidades de Valencia y Murcia.En España, el trasplante de órganos constituye uno de los mayores retos y trabajo en equipo de los centros hospitalarios. Se estima que en 2020 España aportó a la Unión Europea el 19% de la totalidad de los donantes. El diagnóstico de apoyo confirmatorio recomienda por ley algunas técnicas complementarias en determinados casos, entre ellas las técnicas neurofisiológicas, en especial el uso del electroencefalograma y los potenciales evocados. Estos casos plantean al neurofisiólogo clínico la toma acertada de decisiones tanto clínicas como técnicas para su correcta realización e interpretación. Hasta ahora no existe a nivel nacional un consenso de realización de estas técnicas. Es una revisión bibliográfica actualizada sobre las técnicas neurofisiológicas (electroencefalograma y potenciales evocados), con análisis mediante método Delphi y juicio de expertos del grupo de trabajo de la Sociedad de Neurofisiología Clínica de las Comunidades de Valencia y Murcia. Las técnicas neurofisiológicas permiten ser un apoyo en el diagnóstico de muerte encefálica, tanto de forma confirmatoria como para acortar tiempos de observación. Para su realización se precisan unos mínimos estándares técnicos que permitan realizar de forma óptima los estudios. Especialmente hay que tener en cuenta la medicación, la situación hemodinámica, la ausencia de hipotermia y el grupo de edad. Presentamos la primera guía en castellano elaborada por la Sociedad de Neurofisiología de las Comunidades de Valencia y Murcia para la realización en nuestros hospitales de las técnicas neurofisiológicas en el diagnóstico de muerte encefálica.


Assuntos
Morte Encefálica , Neurofisiologia , Encéfalo , Morte Encefálica/diagnóstico , Eletroencefalografia , Potenciais Evocados , Humanos
2.
Rev Neurol ; 44(6): 339-42, 2007.
Artigo em Espanhol | MEDLINE | ID: mdl-17385169

RESUMO

INTRODUCTION: Obtaining vestibular-evoked myogenic potentials (VEMP) by means of the vestibulocollic reflex is a readily available technique that provides an image of vestibular functioning and is useful for evaluating the pathologies that involve compromise of the anatomical pathway of the reflex. Although normal patterns do exist, responses vary at different ages. AIM: To obtain reference values of the vestibulocollic reflex according to different age groups. SUBJECTS AND METHODS: We studied 40 volunteers with no symptoms of auditory or vestibular compromise. Each ear was stimulated separately by a series of clicks (sounds lasting 0.1 s; 3 pps; intensities of 100 dB nHL and 85 dB nHL) and recordings were made in the sternocleidomastoid muscles by means of surface electrodes as patients who were lying on their backs contracted these muscles as they lifted their heads. We studied the latency of the initial p13-n23 positive-negative potential and the peak-to-peak amplitude. The existence of later n34-p44 potentials was evaluated. RESULTS: No statistically significant differences were found between genders or between the two ears. We did not find any differences between the latencies of the waves according to the intensity of the stimulus, but there is a relationship between the amplitude of the p13-n23 potential and the intensity of the stimulus. The latencies of the responses in children under 10 years of age differ from those of the other groups, but no differences were found among those over the age of 11. CONCLUSIONS: The VEMP display steady and easily identifiable latencies. We obtained different reference values for latency in children under the age of 10 and those over 11 years old. The amplitude decreases with the intensity of the stimulus.


Assuntos
Potenciais Evocados Auditivos , Reflexo Acústico , Vestíbulo do Labirinto/fisiologia , Adolescente , Adulto , Fatores Etários , Criança , Pré-Escolar , Eletromiografia , Feminino , Humanos , Lactente , Masculino , Pessoa de Meia-Idade , Músculos do Pescoço/metabolismo
3.
Rev. neurol. (Ed. impr.) ; 44(6): 339-342, mar. 2007. ilus, tab
Artigo em Es | IBECS | ID: ibc-054499

RESUMO

Introducción. La obtención de potenciales vestibulares miogénicos evocados (PVME) mediante la realización del reflejo vestibulocervical es una técnica de fácil obtención que da una imagen de la función vestibular y es útil para valorar las patologías que impliquen afectación de la vía anatómica del reflejo. Aunque existen patrones normales, a distintas edades podemos encontrar variaciones en las respuestas. Objetivo. Obtener valores de referencia por tramos de edad del reflejo vestibulocervical. Sujetos y métodos. Estudiamos a 40 voluntarios sin síntomas de afectación auditiva o vestibular. Se estimula mediante clics (sonidos de 0,1 s de duración; 3 pps; intensidades de 100 dB nHL y 85 dB nHL), cada oído por separado, y se registra en los músculos esternocleidomastoideos mediante electrodos de superficie mientras el paciente los contrae al alzar la cabeza desde el decúbito supino. Hemos estudiado la latencia del potencial positivo-negativo inicial p13-n23 y la amplitud pico-pico. Se valora la existencia de potenciales más tardíos n34-p44. Resultados. No encontramos diferencias estadísticamente significativas entre géneros ni entre ambos oídos. No observamos diferencias entre latencias de las ondas en función de la intensidad del estímulo, y existe una relación entre la amplitud del potencial p13-n23 y la intensidad del estímulo. Las latencias de las respuestas en menores de 10 años difieren del resto de grupos, pero no existen diferencias en los mayores de 11 años. Conclusiones. Los PVME muestran unas latencias estables y fácilmente identificables. Obtenemos los valores de referencia de latencia diferentes para menores de 10 años y para los mayores de 11. La amplitud decrece en función de la intensidad del estímulo


Introduction. Obtaining vestibular-evoked myogenic potentials (VEMP) by means of the vestibulocollic reflex is a readily available technique that provides an image of vestibular functioning and is useful for evaluating the pathologies that involve compromise of the anatomical pathway of the reflex. Although normal patterns do exist, responses vary at different ages. Aim. To obtain reference values of the vestibulocollic reflex according to different age groups. Subjects and methods. We studied 40 volunteers with no symptoms of auditory or vestibular compromise. Each ear was stimulated separately by a series of clicks (sounds lasting 0.1 s; 3 pps; intensities of 100 dB nHL and 85 dB nHL) and recordings were made in the sternocleidomastoid muscles by means of surface electrodes as patients who were lying on their backs contracted these muscles as they lifted their heads. We studied the latency of the initial p13-n23 positive-negative potential and the peak-to-peak amplitude. The existence of later n34-p44 potentials was evaluated. Results. No statistically significant differences were found between genders or between the two ears. We did not find any differences between the latencies of the waves according to the intensity of the stimulus, but there is a relationship between the amplitude of the p13-n23 potential and the intensity of the stimulus. The latencies of the responses in children under 10 years of age differ from those of the other groups, but no differences were found among those over the age of 11. Conclusions. The VEMP display steady and easily identifiable latencies. We obtained different reference values for latency in children under the age of 10 and those over 11 years old. The amplitude decreases with the intensity of the stimulus


Assuntos
Masculino , Feminino , Lactente , Pré-Escolar , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Humanos , Potenciais Evocados Auditivos , Reflexo Acústico , Vestíbulo do Labirinto/fisiologia , Fatores Etários , Eletromiografia , Músculos do Pescoço/metabolismo
4.
Vigilia sueño ; 16(supl.1): 33-39, mar. 2004.
Artigo em Espanhol | IBECS | ID: ibc-150822

RESUMO

Los inconvenientes del consumo prolongado de benzodiazepinas, hipnoticos, y de las nuevas moléculas no benzodiazepínicas, motivan la búsqueda del alternativas en el tratamiento farmacológico del insomnio. La importante comorbilidad entre el insomnio y la depresión, junto con el impacto de algunos antidepresivos en los mecanismos de neurotransmisión en la regulación del sueño, justifican su utilización en los pacientes insomnes. Hay pocos estudios controlados realizados con antidepresivos en pacientes insomnes no deprimidos y se necesita una mayor información, pero los resultados con los fármacos ensayados son positivos en general. De hecho en los últimos años se observa una tendencia a incrementar la prescripción de fármacos antidepresivos para tratar el insomnio y una retracción en el uso de los fármacos agonistas de los receptores benzodiazepínicos (AU)


The drawbacks in the prolongate consume of the BZD hypnotics and the new no-BZD molecules, cause the searching of alternatives in the pharmacological treatment of insomnia. The important comorbility between insomnia and depression, added to the impact of some antidepressants in the sleep regulation neurotransmission mechanisms, justify their use in the insomniacs patients. There are few controlated studies made with antidepressants in no-depressed insomniacs patients and it is necessary more information, but the results with the assayed drugs are in general positive. In fact, in the last years it is observed an increased tendency in the prescription of antidepressants drugs in the treatment of insomnia and a retraction in the use of the BZD-receptors antagonist drugs (AU)


Assuntos
Humanos , Masculino , Feminino , Distúrbios do Início e da Manutenção do Sono/complicações , Distúrbios do Início e da Manutenção do Sono/epidemiologia , Distúrbios do Início e da Manutenção do Sono/terapia , Benzodiazepinas/efeitos adversos , Benzodiazepinas/farmacologia , Benzodiazepinas/farmacocinética , Hipnóticos e Sedativos/efeitos adversos , Hipnóticos e Sedativos/farmacologia , Hipnóticos e Sedativos/farmacocinética , Antidepressivos/efeitos adversos , Antidepressivos/farmacologia , Antidepressivos/farmacocinética , Depressão/complicações , Depressão/patologia , Depressão/terapia , Comorbidade
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...