Purpose: to evaluate the effect of age on vestibular-ocular reflex gain through v-HIT. Methods: this was a cross-sectional, analytical, observational study conducted with 90 subjects without self-reported otoneurological alterations, who underwent v-HIT examination in order to evaluate semicircular canal gain and cephalic pulse velocity. Results: the age of the sample ranged from 20 to 83 years. It was decided that the sample be divided into three age groups to facilitate the analysis: 18 to 30 years; 31 to 59 years, and over 60 years old. A decrease in vestibular-ocular reflex gains of the right and posterior semicircular canals was observed with increasing age. The average semicircular canal gain was close to one and the velocities above 100º/s. Conclusion: the average gain of the semicircular canals is within the normality standards found in the literature. Only the posterior and right anterior semicircular canals showed reduced gain with increasing age. RESUMO Objetivo: avaliar o efeito da idade sobre o ganho do reflexo vestíbulo-ocular por meio do v-HIT. Métodos: estudo transversal, analítico, observacional, realizado com 90 indivíduos sem alterações otoneurológicas autorrelatadas, que foram submetidos ao exame v-HIT, com o intuito de avaliar o ganho dos canais semicirculares e a velocidade dos impulsos cefálicos. Resultados: a idade da amostra variou de 20 a 83 anos. Optou-se pela divisão em três faixas etárias para facilitar a análise: 18 a 30 anos; 31 a 59 anos e maior que 60 anos. Houve diminuição dos ganhos do reflexo vestíbulo-ocular dos canais semicirculares anterior direito e posteriores com o aumento da idade. As médias do ganho dos canais semicirculares foram próximas a 1 e as velocidades, acima de 100º/s. Conclusão: as médias do ganho dos canais semicirculares estiveram de acordo com os padrões de normalidade da literatura. Apenas os canais semicirculares posteriores e o anterior direito apresentaram redução do ganho com o aumento da idade.
Paranasal sinus mucoceles are benign cystic lesions, filled with mucus, occurring due to an obstruction of involved sinus ostium. They are indolent, locally expansive, and destructive. Surgical treatment must be performed and, when done at the correct time, may prevent sequelae. We present a case of ethmoid sinus mucocele with orbit involvement and permanent optical nerve injury.
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