Navegando por Palavras-chave "Vestibular diseases"
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- ItemAcesso aberto (Open Access)Controle postural de idosos vestibulopatas crônicos com e sem histórico de quedas submetidos à estimulação visual por realidade virtual(Universidade Federal de São Paulo (UNIFESP), 2010) Gazzola, Juliana Maria [UNIFESP]; Ganança, Fernando Freitas [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Static posturography may assist the assessment of postural control in elderly patients with chronic vestibular disorder. Aims: To assess the postual control of elderly patients with chronic vestibular disorder, with or without history of falls through the static porturography integrated to virtual reality; to compare clinicalfunctional aspects between the elderly patients with chronic vestibular disorders, with or without history of falls. Method: A quantitative analytical research was performed through a transversal clinical study. Male and female elderly patients were included in the study, distributed into: control group (CG) - without falls or vestibular complaints, and functionally active; and group of patients with chronic vestibular disorder - group 1 (G1) with patients without history of falls, and group 2 (G2) with patients with history of falls. The static posturography assessment was performed using the Balance Rehabilitation Unit® (BRU®) to measure the parameters of the center of pressure (COP): stability limit (SL), COP area and velocity of body sway (VBS), in ten sensorial conditions. The following tests were used: Chi-Square or Fisher, ANOVA and Bonferroni, α=0,05. Results: Sample was constituted by 117 elderly patients: 67.5% female, mean age of 72.99 years, 41 (35.0%) of CG, 40 (34.2%) of G1 and 36 (30.8%) of G2. Groups did not present difference regarding gender, age and height. The SL of the CG was higher when compared to G1 (p<0.05) and G2 (p<0.05). The COP area presented higher values for G1 in comparison to GC (p<0.05) on firm surface conditions (FS) and closed eyes (CE), and on FS and visual vestibular interaction (VVI) in the horizontal direction. The COP area in all conditions, and the VBS in the condition of FS and open eyes (OE), FS and CE, FS and optokinetic stimulation downward and upward, and FS and VVI in the horizontal direction presented higher values for G2 in comparison to GC (p<0.05). The COP area in the condition of FS and OE, FS and CE, foam surface and CE, FS and saccadic stimulation, FS and optokinetic stimulation to the left and upward, and FS and VVI in the horizontal direction, and the VBS in the condition of FS and OE, FS and CE presented higher values for G2 in comparison to G1 (p<0.05). Elderly patients from G2 presented greater association with rotatory and non-rotatory dizziness (p<0.05) in comparison to G1. Conclusions: Healthy elderly patients presented better SL than elderly patients with chronic vestibular disorder with or without falls. Healthy elderly patients presented an area of COP and VBS similar to those of elderly patients with chronic vestibular disorder without falls, and better results in comparison with those who presented falls. Elderly patients with chronic vestibular disorder without falls presented a similar SL, better area of COP and similar VBS in comparison with those who presented falls; postural control in elderly patients with chronic vestibular disorder with falls was worse than it was in healthy elderly and patients with chronic vestibular disorder without falls.
- ItemSomente MetadadadosDas alterações vestibulares nas doenças do sistema nervoso central(Universidade Federal de São Paulo (UNIFESP), 1995) Zeigelboim, Bianca Simone [UNIFESP]; Ito, Yasuko Imasato [UNIFESP]
- ItemAcesso aberto (Open Access)Effects of conventional versus multimodal vestibular rehabilitation on functional capacity and balance control in older people with chronic dizziness from vestibular disorders: design of a randomized clinical trial(Biomed Central Ltd, 2012-12-31) Ricci, Natalia Aquaroni [UNIFESP]; Aratani, Mayra Cristina [UNIFESP]; Caovilla, Heloisa Helena [UNIFESP]; Gananca, Fernando Freitas [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)Background: There are several protocols designed to treat vestibular disorders that focus on habituation, substitution, adaptation, and compensation exercises. However, protocols that contemplate not only vestibular stimulation but also other components that are essential to the body balance control in older people are rare. This study aims to compare the effectiveness of two vestibular rehabilitation protocols (conventional versus multimodal) on the functional capacity and body balance control of older people with chronic dizziness due to vestibular disorders.Methods/design: A randomized, single-blind, controlled clinical trial with a 3 months follow-up period will be performed. the sample will be composed of older individuals with a clinical diagnosis of chronic dizziness resulting from vestibular disorders. the subjects will be evaluated at baseline, post-treatment and follow-up. Primary outcomes will be determined in accordance with the Dizziness Handicap Inventory (functional capacity) and the Dynamic Gait Index (body balance). Secondary outcomes include dizziness features, functional records, body balance control tests, and psychological information. the older individuals (minimum sample n = 68) will be randomized to either the conventional or multimodal Cawthorne&Cooksey protocols. the protocols will be performed during individual 50-minute sessions, twice a week, for 2 months (a total of 16 sessions). the outcomes of both protocols will be compared according to the intention-to-treat analysis.Discussion: Vestibular rehabilitation through the Cawthorne&Cooksey protocol has already proved to be effective. However, the addition of other components related to body balance control has been proposed to improve the rehabilitation of older people with chronic dizziness from vestibular disorders.
- ItemAcesso aberto (Open Access)Evaluation of postural control in unilateral vestibular hypofunction(Associação Brasileira de Otorrinolaringologia e Cirurgia Cervicofacial, 2014-07-01) Quitschal, Rafaela Maia [UNIFESP]; Fukunaga, Jackeline Yumi [UNIFESP]; Ganança, Mauricio Malavasi [UNIFESP]; Caovilla, Heloisa Helena [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)INTRODUCTION:Patients with vestibular hypofunction, a typical finding in peripheral vestibular disorders, show body balance alterations.OBJECTIVE:To evaluate the postural control of patients with vertigo and unilateral vestibular hypofunction.METHOD:This is a clinical cross-sectional study. Twenty-five patients with vertigo and unilateral vestibular hypofunction and a homogeneous control group consisting of 32 healthy individuals were submitted to a neurotological evaluation including the Tetrax Interactive Balance System posturography in eight different sensory conditions.RESULTS:For different positions, vertiginous patients with unilateral vestibular hypofunction showed significantly higher values of general stability index, weight distribution index, right/left and tool/heel synchronizations, Fourier transformation index and fall index than controls.CONCLUSION:Increased values in the indices of weight distribution, right/left and tool/heel synchronizations, Fourier transformation and fall risk characterize the impairment of postural control in patients with vertigo and unilateral vestibular hypofunction.
- ItemAcesso aberto (Open Access)Posturografia com estímulos de realidade virtual em adultos jovens sem alterações do equilíbrio corporal(Sociedade Brasileira de Fonoaudiologia, 2011-09-01) Ghiringhelli, Rosângela [UNIFESP]; Ganança, Cristina Freitas [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)PURPOSE: To analyze the findings of posturography with virtual reality stimuli carried out in young healthy adults with no otoneurological complaints, based on the parameters center of pressure, limit of stability and sway speed for different visual stimuli, and regarding differences between female and male genders. METHODS: Participants were 50 healthy individuals of both genders (50% female and 50% male) with ages ranging from 18 to 25 years (mean age 21.30 years), with no complaints regarding body balance, and with vestibular outcomes assessed through digital vectonistagmography within normal limits. Posturography was composed of 11 visual stimuli and determined the limit of stability area (LOS), the ellipse area, and the sway speed in ten sensorial conditions. Results were calculated for the studied age range and analyzed according to the values for each stimulus, with the aim to obtain normality parameters. RESULTS: The average values obtained in posturography regarding limit of stability, ellipse area and sway speed for stimuli with viso-vestibular interaction presented significant differences between genders, and, in all cases, women obtained lower values than men. CONCLUSION: The findings of posturography with virtual reality stimuli in healthy young adults evidence that the parameters center of pressure, limit of stability and sway speed present differences between genders and, therefore, must be considered separately.
- ItemAcesso aberto (Open Access)Posturografia com estímulos de realidade virtual nas diferentes disfunções vestibulares(Sociedade Brasileira de Fonoaudiologia, 2012-03-01) Yamamoto, Marcelo Eiji Inoue [UNIFESP]; Ganança, Cristina Freitas [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)PURPOSE: To assess body balance and to quantify possible alterations over the static posturography of the Balance Rehabilitation Unit (BRU TM) in patients with vestibular dysfunction. METHODS: Retrospective study, with files of 100 patients with topographic diagnosis of peripheral or central vestibular dysfunction and 100 healthy individuals that composed the control group, of both genders, with ages varying between 7 and 86 years. For the posturography, the Balance Rehabilitation Unit (BRU TM), of Medicaa® was used. The following parameters were analyzed: stability limits, elliptical area, and speed of oscillation in ten sensory conditions. RESULTS: Mean values of the stability limit, the elliptical area and the speed of oscillation in the experimental group was significant when compared to the control group in all conditions. The mean parameters of the female experimental group were significant when compared to the control group in all conditions. Patients with central vestibular dysfunction obtained higher values than patients with peripheral vestibular dysfunction in the variables elliptical area and speed of oscillation, however with lower value of the area of the stability limit. CONCLUSION: Posturography with virtual reality stimuli was an effective assessment method for detecting alterations related to the variables stability limits, elliptical area, and speed of oscillation, since the control group performed better, both between groups and between genders. Among the vestibular dysfunctions, individuals with peripheral condition performed better than those with central vestibular dysfunction in all the variables analyzed on posturography.