Navegando por Palavras-chave "Potenciais Evocados Miogênicos Vestibulares"

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    Avaliação vestibular na surdez súbita
    (Universidade Federal de São Paulo (UNIFESP), 2021) Maia, Nathalia De Paula Doyle [UNIFESP]; Gananca, Fernando Freitas [UNIFESP]; Universidade Federal de São Paulo
    Purpose: To evaluate vestibular function in patients with sudden hearing loss (SS) using cervical and ocular vestibular evoked myogenic potential (respectively, cVEMP and oVEMP), video head impulse test (vHIT), and caloric test. In addition, this study aims to assess the correlation between dizziness with vestibular tests and the correlation between vestibular tests and hearing recovery. Methods: This is an observational, longitudinal, prospective study comprising consecutive patients with SS who attended the emergency room and the outpatient clinic of the Otorhinolaryngology and Head and Neck Surgery Department of the Universidade Federal de São Paulo (UNIFESP) and met the eligible criteria, from November 2019 to March 2021. An otorhinolaryngologic assessment was performed, including audiometry, cVEMP, oVEMP, vHIT and caloric test. Audiometry was performed at the presentation and at the end of follow-up. A p-value ≤ 0,05 was considered statistically significant. Results: Seventeen patients were included in the study, 9 (52.94%) males and 8 (47.06%) females, with a mean age of 45.4 ± 11.1 years. The right side was affected in 9 patients (52.94%) and the left side in 8 (47.06%). Five patients (29,41%) presented dizziness and 15 (88,23%) tinnitus. All participants underwent vestibular assessment through cervical and ocular VEMP and vHIT, and 13 of them were evaluated by caloric test. cVEMP was abnormal in 5 (29.41%) patients, while oVEMP was abnormal in eleven (64.71%). vHIT and caloric test were abnormal in 7 (41.18%) and 5 (38.46%) patients, respectively. There was no statistically significant correlation between clinical data and vestibular tests or hearing recovery, neither between vestibular tests and hearing recovery. Conclusion: oVEMP, cVEMP, vHIT and caloric test revealed vestibular involvement in some patients. However, abnormal vestibular tests or its combination were not correlated with hearing recovery in SS.
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    Vertical visual subjetiva e potencial evocado miogênico vestibular na Doença de Menière
    (Universidade Federal de São Paulo (UNIFESP), 2021) Ferreira, Maristela Mian [UNIFESP]; Gananca, Heloisa Helena Caovilla Malavasi [UNIFESP]; Universidade Federal de São Paulo
    Introduction: The subjective visual vertical (SVV), the cervical vestibular evoked myogenic potential (cVEMP) and the ocular vestibular evoked myogenic potential (oVEMP) are tests that can help in the functional assessment of the static and dynamic otolithic system in the intercritical period of Menière's disease (MD). Objective: to evaluate the otolytic function by comparing the findings of SVV, cVEMP and oVEMP in patients in the intercritical period of unilateral defined MD. Method: The sample, consisting of an experimental group (n=22; 15 male and 17 female, with mean age of 38,7 ± 6,3 years) of unilateral defined MD and a control group (n=14; 5 male and 9 female, with mean age of 41,64 ± 13,45 years), was submitted to vestibular evaluation by means of SVV with the bucket method, cVEMP and oVEMP. The data were tabulated and submitted to statistical analysis. Results: The results of the SVV, evaluated by group of ears or by individuals, and those of cVEMP, oVEMP and cVEMP + oVEMP showed no significant difference, indicating that there was no disagreement among them. The group of ears with absence of oVEMP presented longer disease duration than the group with presence of oVEMP. Conclusion: SVV abnormalities combined with those of cVEMP and oVEMP and the agreement or disagreement between SVV findings and some parameters of cVEMP and oVEMP indicate that the complementary association of SVV with cVEMP and oVEMP contributes to improve the recognition of otolithic dysfunction in the intercritical period of unilateral defined Menière's disease.