Navegando por Palavras-chave "Nystagmus"

Agora exibindo 1 - 2 de 2
  • Imagem de Miniatura
    Item
    Acesso aberto (Open Access)
    Estimulação calórica gelada com ar nas vestibulopatias periféricas crônicas com nistagmo espontâneo
    (CEFAC Saúde e Educação, 2008-01-01) Cabral, Flavia Silveira dos Santos [UNIFESP]; Ganança, Cristina Freitas [UNIFESP]; Ganança, Fernando Freitas [UNIFESP]; Ganança, Mauricio Malavasi [UNIFESP]; Caovilla, Heloisa Helena [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Uniban Porograma de Pós-Graduação em Ciências da Reabilitação Neuro-Motora; Uniban
    PURPOSE: to analyze the effect of air caloric stimulation at 10ºC on the post-caloric responses in patients with chronic peripheral dysfunction who presented spontaneous nystagmus with the eyes closed. METHODS: 61 patients with spontaneous nystagmus with closed eyes were submitted to air caloric stimulation under the following temperatures: 42, 18 and 10ºC. RESULTS: in 42 patients (69.8%), abnormal values of directional preponderance and / or unilateral hypoexcitability were observed following the 42ºC and 18ºC stimulations. For the 10ºC stimulations an asymmetry within normal limits was seen in 52.5% of the patients, while abnormal values were seen in 16.4% (p=0.012). Unilateral hypoexcitability was confirmed in 11.5% of the cases. In 8.2% of the patients there were abnormal findings not evidenced under 42ºC and 18ºC stimulations. CONCLUSION: in patients with chronic peripheral labyrinthine disorders who show spontaneous nystagmus with closed eyes, the 10ºC caloric test makes it possible to remove the influence of the spontaneous nystagmus on the post-caloric responses.
  • Nenhuma Miniatura disponível
    Item
    Somente Metadadados
    Sweep visually evoked potentials and visual findings in children with West syndrome
    (Elsevier B.V., 2014-03-01) Dotto, Patricia de Freitas [UNIFESP]; Cavascan, Nivea Nunes [UNIFESP]; Berezovsky, Adriana [UNIFESP]; Sacai, Paula Yuri [UNIFESP]; Rocha, Daniel Martins [UNIFESP]; Pereira, Josenilson Martins [UNIFESP]; Salomão, Solange Rios [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    Background: West syndrome (WS) is a type of early childhood epilepsy characterized by progressive neurological development deterioration that includes vision.Aim: To demonstrate the clinical importance of grating visual acuity thresholds (GVA) measurement by sweep visually evoked potentials technique (sweep-VEP) as a reliable tool for evaluation of the visual cortex status in WS children.Methods: This is a retrospective study of the best-corrected binocular GVA and ophthalmological features of WS children referred for the Laboratory of Clinical Electrophysiology of Vision of UNIFESP from 1998 to 2012 (Committee on Ethics in Research of UNIFESP no 0349/08). the GVA deficit was calculated by subtracting binocular GVA score (logMAR units) of each patient from the median values of age norms from our own lab and classified as mild (0.1-0.39 logMAR), moderate (0.40-0.80 logMAR) or severe (>0.81 logMAR). Associated ophthalmological features were also described.Results: Data from 30 WS children (age from 6 to 108 months, median = 14.5 months, mean +/- SD = 22.0 +/- 22.1 months; 19 male) were analyzed. the majority presented severe GVA deficit (0.15-1.44 logMAR; mean +/- SD = 0.82 +/- 0.32 logMAR; median = 0.82 logMAR), poor visual behavior, high prevalence of strabismus and great variability in ocular positioning. the GVA deficit did not vary according to gender (P = .8022), WS type (P = .908), birth age (P = .2881), perinatal oxygenation (P = .7692), visual behavior (P = .8789), ocular motility (P = .1821), nystagmus (P = .2868), risk of drug-induced retinopathy (P = .4632) and participation in early visual stimulation therapy (P = .9010).Conclusions: the sweep-VEP technique is a reliable tool to classify visual system impairment in WS children, in agreement with the poor visual behavior exhibited by them. (C) 2013 European Paediatric Neurology Society. Published by Elsevier B.V. All rights reserved.