Estudo do potencial evocado miogênico vestibular na vertigem posicional paroxística benigna

• Ano de defesa: 2010
• Autor(a) principal: Dorigueto, Ricardo Schaffeln [UNIFESP]
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Nistagmo posicional; Doenças do labirinto; Doenças vestibulares; Potenciais evocados; Vertigem; Nystagmus, physiologic; Labyrinth diseases; Vestibular Diseases; Evoked potentials; Vertigo
• Link de acesso: http://repositorio.unifesp.br/handle/11600/9567

Introduction: Benign Paroxysmal Positional Vertigo (BPPV) is a highly last longing disorder. Despite being benign, it may follow a chronic and resistive course. Therefore, it may lead to serious difficulties to patients’ quality of life. The study of the performance of otoliths organs by Vestibular Evoked Myogenic Potential (VEMP) testing may be the key to understand the involvement and recurrent function in BPPV. Objective: It is to determine if there is statistically meaningful difference in the saccule-collic reflex in a Control group when compared to patients with BPPV as well as between the recurrent and non recurrent form of BPPV. Method: The transversal study by VEMP diagnostic intervention, where the Control group and patients with recurrent or non-recurrent BPPV forms went through an assessment. Results: The frequency of changes in VEMP was significantly greater in the BPPV patient group than the Control group (p<0,001). Changes were found related to the lack of response, the asymmetric index (AI) and the latencies of p13 and n23, however, just the lack of responses (p<0,001) and asymmetric index (p<0,001) results showed statistically significant difference related to the Control group. There has been no statistic difference between the recurrent and non recurrent forms of BPPV associated with VEMP result (p=0,09). Conclusion: There has been statistically significant difference in the saccule-collic reflex behavior from the group with BPPV when related to the Control group. There has been no statistically significant difference in the saccule-cholic reflex behavior between the recurrent and non recurrent form of BPPV.