Navegando por Palavras-chave "somatosensory"

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    Comparação das alterações do potencial evocado somatosensorial no tratamento cirúrgico da escoliose idiopática entre técnicas com e sem amarrilha sublaminar
    (Sociedade Brasileira de Coluna, 2010-09-01) Ueta, Renato Hiroshi Salvioni [UNIFESP]; Del Curto, David [UNIFESP]; Wajchenberg, Marcelo [UNIFESP]; Martins Filho, Délio Eulálio [UNIFESP]; Ferreira, Ricardo [UNIFESP]; Puertas, Eduardo Barros [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    OBJECTIVE: to compare the number of events with alteration in the somatosensory evoked potentials (SSEP) and its repercussion between different techniques of surgical treatment for idiopathic scoliosis, with and without sublaminar wiring. METHODS: twenty-five surgical procedures with flexible curves for treatment of idiopathic scoliosis were reviewed in the period of November 1996 to September 1999. They were divided into two groups: without sublaminar wiring (Cotrel-Dubousset's system) (Group I); and with sublaminar wiring (Harrington-Luque's system and rectangle of Hartshill) (Group II). In all surgeries, the intraoperative neurophysiologic monitoring with Somatosensory Evoked Potentials (SSEPs) was used. RESULTS: according to the findings, a bigger frequency of monitoring changes was observed during and at the end of the surgery in Group II. A high incidence of false-negative changes was also verified. No patient with neurological damages was observed. CONCLUSION: There are still doubts about the safest method for the surgical treatment of idiopathic scoliosis. The results presented in this study suggest a smaller incidence of SSEPs changes in the patients treated with Cotrel-Dubousset's system.
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    The N18 component of the median nerve SEP is not reduced by vibration
    (Elsevier B.V., 1998-09-01) Manzano, G. M.; Negrao, N.; Nobrega, JAM; Universidade Federal de São Paulo (UNIFESP); Universidade de São Paulo (USP)
    Objective: To study the interference of mechanical vibration of the palm of the hand on the median nerve short-latency SEP components.Methods: Electrically-elicited short-latency median nerve SEP were obtained before and during mechanical vibration (120 Hz) of the palm in two groups of normal individuals (6 in group I and 9 in group II). the amplitude of the different components was compared between the two conditions through non-parametric statistical tests.Results: A significant reduction in the amplitude of the N9, P13/14 and N20 components was detected, however no overall significant changes were detected for the N18 component.Conclusions: Vibration interference reduced all studied components except the N18. these findings are interpreted as supporting evidence fur the proposed association between the N18 component and the inhibitory activities elicited in the dorsal column nuclei. (C) 1998 Elsevier Science Ireland Ltd. All rights reserved.
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    Potencial evocado por estimulação do nervo mediano (PESS): componentes subcortical
    (Academia Brasileira de Neurologia - ABNEURO, 1994-03-01) Manzano, Gilberto Mastrocola [UNIFESP]; Nóbrega, J.a.m. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    A review of the literature is done regarding designation, potential fields and implicated generators for subcortical components of the short latency median nerve somatosensory evoked potentials.
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    Potencial evocado por estimulação do nervo mediano: comparação do tempo de condução central definido por diferentes pontos de medida
    (Academia Brasileira de Neurologia - ABNEURO, 1994-03-01) Manzano, Gilberto Mastrocola [UNIFESP]; Nóbrega, J.a.m. [UNIFESP]; Novo, Neil Ferreira [UNIFESP]; Juliano, Y. [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    After stimulation of the right median nerve in 20 normal adult volunteers interpeak latency N13-N20 and the difference in onset latency of the components N11-N20 are compared. A fractionation of the last measure was made at the onset of the P13-14 complex. The results concur with the ones in the literature, and it has been observed that all points measured could be obtained without significant difference on the C6-FZ and P3-FZ montages.