A newmethod to analyze the subjective visual vertical in patients with bilateral vestibular dysfunction

• Autor(a) principal: Funabashi, Martha
• Data de Publicação: 2012
• Outros Autores: Santos-Pontelli, Taiza Elaine Grespan, Colafêmina, José Fernando, Pavan, Theo Zeferino, Carneiro, Antonio Adilton Oliveira, Takayanagui, Osvaldo Massaiti
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Clinics
• Texto Completo: https://www.revistas.usp.br/clinics/article/view/47923
• topic: Vestibular Function Tests; Vestibular Labyrinth; Vestibular Diseases; Saccule; Utricule

OBJECTIVE: The aim of this study was to assess the subjective visual vertical in patients with bilateral vestibular dysfunction and to propose a new method to analyze subjective visual vertical data in these patients. METHODS: Static subjective visual vertical tests were performed in 40 subjects split into two groups. Group A consisted of 20 healthy volunteers, and Group B consisted of 20 patients with bilateral vestibular dysfunction. Each patient performed six measurements of the subjective visual vertical test, and the mean values were calculated and analyzed. RESULTS: Analyses of the numerical values of subjective visual vertical deviations (the conventional method of analysis) showed that the mean deviation was 0.326±1.13º in Group A and 0.301±1.87º in Group B. However, by analyzing the absolute values of the subjective visual vertical (the new method of analysis proposed), the mean deviation became 1.35±0.48º in Group A and 2.152±0.93º in Group B. The difference in subjective visual vertical deviations between groups was statistically significant (p,