Potencial evocado auditivo de tronco encefálico por via óssea em indivíduos com perda auditiva sensorioneural

• Autor(a) principal: Fernandes, Luciana Castelo Branco Camurça [UNIFESP]
• Data de Publicação: 2013
• Outros Autores: Gil, Daniela [UNIFESP], Maria, Samylla Lopes de Santa, Azevedo, Marisa Frasson de [UNIFESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNIFESP
• Texto Completo: http://dx.doi.org/10.1590/S1516-18462012005000018; http://repositorio.unifesp.br/handle/11600/7772
• topic: Hearing; Electrophysiology; Hearing Loss; Audição; Eletrofisiologia; Perda Auditiva

PURPOSE: to characterize the results of ABR via bone in subjects with mild sensorineural hearing loss, comparing these data with the control group made up by subjects with normal hearing. METHOD: the sample consisted of 40 adults of both genders, 18 - 55 year old, divided into a control group of 30 subjects with normal hearing and a study group made up of 10 subjects with mild sensorineural hearing loss. ABR was carried out with Interacoustics brand EP15. The stimulus was the click presentation rate of 27.7 / s, for a total of 2000 stimuli with rarefaction polarity for AC and switched to VO and band-pass filter of 50Hz and 3000Hz. RESULTS: in subjects with mild sensorineural loss, there were no statistically significant differences between the ABR threshold via air and bone, and those thresholds were equivalent, with air-bone gap of less than 10dB. The latencies of wave V in the electrophysiological threshold and 50 dBnNA were lower latencies than those noted in subjects with normal hearing. CONCLUSION: we found electrophysiological thresholds via bone equivalent to thresholds obtained via air, with the presence of air-bone gap being less than 10dBnNA. Thus, the use of VO by ABR provides data for a more-detailed characterization of the type of hearing loss.