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1.
Rev Neurol ; 33(1): 10-6, 2001.
Artigo em Espanhol | MEDLINE | ID: mdl-11562854

RESUMO

INTRODUCTION: A patient with type 2 spino cerebellar ataxia has difficulty in carrying out alternate movements such as pronation and supination. OBJECTIVES. To evaluate the function of an automatized system for measuring disorders of alternate movements. PATIENTS AND METHODS: We studied the measurement of diadochokinesia in two groups of healthy patients, a first group (64 persons) to determine the normal intervals and a second group to validate the test (52 persons). We also studied 100 patients for validation of the system. A further 53 patients were evaluated before and after rehabilitation. RESULTS: Analysis of the basic measurements for diagnosis of duodochokinesia showed that the higher the cut off point, the greater the sensitivity of the test, whereas the opposite occurred with the specificity. Thus, regarding a higher cut off, there is a five times greater probability of a positive results in the patients than in healthy persons. However, the probability of a normal result is six times higher in healthy than in affected persons. The results of variant analysis done on patients before and after rehabilitation suggest that the presence of quantitative changes in the second study was due to the positive effect of neuro rehabilitation. CONCLUSION: The technique used is effective for differentiation of affected from healthy persons and its use is justified in the evaluation of co ordination ability after rehabilitation


Assuntos
Braço/fisiopatologia , Movimento/fisiologia , Ataxias Espinocerebelares/fisiopatologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
2.
Rev. neurol ; 32(7): 601-606, 2001. tab
Artigo em Espanhol | CUMED | ID: cum-36373

RESUMO

Implementation of quantitative techniques to study disorders of coordination of movements inhereditary ataxias permits an objective description of the disease. To make an objective evaluation of the maindisorders of coordination in patients with ataxia and compare healthy persons with those affected. Wemade a prospective transverse study of 43 normal persons and 50 patients with type 2 spinocerebellar ataxia (SCA2). In allcases we made a qualitative examination of Rombergs sign in two stages to increase the sensitivity. We observed how longthe person could keep his balance or whether he swayed and fell. The finger-nose test and diadochokinesia were alsoquantitatively analyzed using a specially designed system connected to a computer which permitted quantitative analysis. We showed that the patients with SCA2 swayed when standing upright. However, they swayed and fell more whenthe test became more sensitive. This showed loss of postural sense. The maximum variables of the period and standarddeviation were increased, whilst the effectiveness was significantly reduced in the group of patients (finger-nose test).Quantitative examination of diadochokinesia showed increased values for the maximum period, standard deviation andintegral. Conclusions. The techniques developed allow measurement of the main disorders of coordination in patients withSCA2, help to differentiate affected persons...(AU)


Assuntos
Humanos , Transtornos dos Movimentos , Ataxia Cerebelar , Ataxias Espinocerebelares/epidemiologia
3.
Rev. neurol. (Ed. impr.) ; 33(1): 10-16, 1 jul., 2001.
Artigo em Es | IBECS | ID: ibc-20746

RESUMO

Introducción. El paciente con ataxia espinocerebelosa tipo 2 presenta dificultades en la ejecución de los movimientos alternativos tales como la pronación y la supinación. Objetivos. Evaluar el desempeño del sistema automatizado para la cuantificación de los trastornos de los movimientos alternativos. Pacientes y métodos. Estudiamos la cuantificación de la diadococinesia en dos grupos de sujetos sanos, un primer grupo (64 sujetos) para la determinación de los intervalos de normalidad y el segundo para la validación de la prueba (52 sujetos). Además, fueron incluidos 100 enfermos para realizar la validación del sistema. Otros 53 pacientes se evaluaron antes y después de la rehabilitación. Resultados. El análisis de las medidas básicas para la discriminación diagnóstica de la diadococinesia demostró que la sensibilidad del test era mayor mientras mayor era el punto de corte, y que al analizar la especificidad ocurría un efecto contrario. Así, respecto al punto de corte mayor, la probabilidad de un resultado positivo es aproximadamente cinco veces superior en los enfermos que en los no enfermos, pero la probabilidad de un resultado negativo es seis veces mayor en los no enfermos que en los enfermos.Los resultados del análisis de varianza realizado a pacientes antes y después de la rehabilitación sugirió la existencia de cambios cuantitativos en el segundo estudio como traducción del efecto positivo de la neurorrehabilitación. Conclusión. La técnica empleada es eficaz en la diferenciación de los sujetos enfermos de los sanos y justifica el empleo de las mismas en la evaluación de las capacidades coordinativas tras la rehabilitación (AU)


Assuntos
Pessoa de Meia-Idade , Criança , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Masculino , Feminino , Humanos , Potenciais Evocados P300 , Eletroencefalografia , Reprodutibilidade dos Testes , Movimento , Desempenho Psicomotor , Valores de Referência , Tempo de Reação , Ataxias Espinocerebelares , Braço
4.
Rev Neurol ; 32(7): 601-6, 2001.
Artigo em Espanhol | MEDLINE | ID: mdl-11391484

RESUMO

INTRODUCTION: Implementation of quantitative techniques to study disorders of coordination of movements in hereditary ataxias permits an objective description of the disease. OBJECTIVES: To make an objective evaluation of the main disorders of coordination in patients with ataxia and compare healthy persons with those affected. PATIENTS AND METHODS: We made a prospective transverse study of 43 normal persons and 50 patients with type 2 spinocerebellar ataxia (SCA2). In all cases we made a qualitative examination of Romberg's sign in two stages to increase the sensitivity. We observed how long the person could keep his balance or whether he swayed and fell. The finger-nose test and diadochokinesia were also quantitatively analyzed using a specially designed system connected to a computer which permitted quantitative analysis. RESULTS: We showed that the patients with SCA2 swayed when standing upright. However, they swayed and fell more when the test became more sensitive. This showed loss of postural sense. The maximum variables of the period and standard deviation were increased, whilst the effectiveness was significantly reduced in the group of patients (finger-nose test). Quantitative examination of diadochokinesia showed increased values for the maximum period, standard deviation and integral. CONCLUSIONS: The techniques developed allow measurement of the main disorders of coordination in patients with SCA2, help to differentiate affected persons from healthy ones and are useful for the detection of moderate changes in severity during progression of the disorder.


Assuntos
Movimento/fisiologia , Exame Neurológico , Ataxias Espinocerebelares/fisiopatologia , Adolescente , Adulto , Cuba , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Equilíbrio Postural , Estudos Prospectivos , Sensibilidade e Especificidade
5.
Rev. neurol. (Ed. impr.) ; 32(7): 601-606, 1 abr., 2001.
Artigo em Es | IBECS | ID: ibc-27039

RESUMO

Introducción. La implementación de las técnicas cuantitativas para el estudio de los trastornos de la coordinación de los movimientos en las ataxias hereditarias permite descripciones objetivas de la enfermedad. Objetivos. Evaluar de manera objetiva los principales trastornos de la coordinación de los enfermos de ataxia y establecer comparaciones entre los sujetos enfermos y sanos. Pacientes y métodos. Realizamos un estudio transversal de corte prospectivo en 43 sujetos normales y 50 enfermos con ataxia espinocerebelosa tipo 2 (SCA2). A todos los pacientes se les realizó una exploración cuantitativa del signo de Romberg en dos tiempos, para aumentar su sensibilidad, y se observó por cuánto tiempo el sujeto mantiene la posición de equilibrio o si, por el contrario, oscila y cae. La maniobra índice-punto y la diadococinesia también fueron analizadas cuantitativamente a través de un sistema diseñado para estos efectos y acoplado a un ordenador que permitió el análisis cuantitativo. Resultados. Se evidenció que los pacientes con SCA2 oscilan cuando permanecen en posición erguida; sin embargo, se balancean más y caen al sensibilizar el examen, lo que es una manifestación de pérdida del sentido postural. Las variables máximo del período y desviación estándar se encuentran aumentadas, mientras que la efectividad está disminuida de manera significativa en el grupo de enfermos (prueba índice-punto).El examen cuantitativo de diadococinesia mostró valores incrementados para el valor máximo del período, la desviación estándar y la integral. Conclusiones. Las técnicas desarrolladas permiten cuantificar los principales trastornos de la coordinación en pacientes con SCA2, ayudan a diferenciar a los sujetos enfermos de los sanos y son útiles en la detección de cambios moderados en la gravedad y en el curso evolutivo de la enfermedad (AU)


Assuntos
Pessoa de Meia-Idade , Adolescente , Adulto , Idoso de 80 Anos ou mais , Idoso , Humanos , Fatores de Risco , Conceitos Meteorológicos , Prognóstico , Estudos Retrospectivos , Hemorragias Intracranianas , Malformações Arteriovenosas Intracranianas , Cuba , Hipertensão
6.
Rev. neurol ; 33(1): 10-16, 2001. tab
Artigo em Espanhol | CUMED | ID: cum-36371

RESUMO

A patient with type 2 spinocerebellar ataxia has difficulty in carrying out alternate movements such aspronation and supination. Objectives. To evaluate the function of an automatized system for measuring disorders of alternatemovements. Patients and methods. We studied the measurement of diadochokinesia in two groups of healthy patients, a first group (64persons) to determine the normal intervals and a second group to validate the test (52 persons). We also studied 100 patients forvalidation of the system. A further 53 patients were evaluated before and after rehabilitation. Results. Analysis of the basic measurementsfor diagnosis of diadochokinesia showed that the higher the cutoff point, the greater the sensitivity of the test, whereas the oppositeoccurred with the specificity. Thus, regarding a higher cutoff, there is a five times greater probability of a positive results in the patientsthan in healthy persons. However, the probability of a normal result is six times higher in healthy than in affected persons. The resultsof variant analysis done on patients before and after rehabilitation suggest that the presence of quantitative changes in the second studywas due to the positive effect of neurorehabilitation...(AU)


Assuntos
Humanos , Ataxias Espinocerebelares , Extremidade Superior , Transtornos dos Movimentos
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