Avaliação da eficiência da prótese auditiva ancorada no osso para perda auditiva sensorioneural unilateral

Abstract

Introduction: Bone Anchored Hearing Aid (BAHA) or bone anchored hearing aid has the function of transmitting sound through bone vibration. This transmission occurs with an implant and an abutment that are surgically attached to the skull cap placed behind the era and an external bone vibrator that transmits the sound directly to the cochlea. Indicated for unilateral conductive, mixed or sensorineural hearing loss that do not benefit from an Individual Sound Amplification Apparatus (AASI) or when it is not possible to transmit the sound by air. However, there is a need for studies aimed at assessing the efficiency of the hearing aid by bone vibration for unilateral sensorineural hearing loss. Objective: Evaluate the efficiency of bone anchored hearing aids for unilateral sensorineural hearing loss. Methodology: Research of the prospective, exploratory, qualitative type, quantitative type, carried out from the survey of the medical record, audiometry examination and application of the satisfaction questionnaire with the 21 participants. The correlation between the answers of the questionnaire and the data concerning the audiometric examination before and after the implant was carried out, as well as the interpretation of the questionnaire. Results: It was possible to verify that audiological tests in the free field of the frequencies of 500 Hz to 4000 Hz, had a significantly better response after BAHA surgery. The questionnaires showed satisfactory results. Discussion: Users who use the bone vibrator report satisfaction regarding sound quality. For these and other reasons it is necessary to continue studies on the use of this device for unilateral hearing loss in order to benefit these individuals. Conclusion: Based on the results obtained, it was possible to conclude that the hearing aid anchored to the bone brings auditory gain, besides improvement in the quality of life.