The primary goal of amplification is to restore audibility without causing discomfort; for someone with severe-to-profound hearing loss, the reduced dynamic range poses unique challenges in hearing-assistive device fitting. These challenges, including physiological limitation, processing difficulties, technology constraints, and other confounding factors, must be considered when selecting, fitting, and counseling for appropriate amplification. Many of the advanced features in hearing aids do not adequately address the unique characteristics of patients with severe-to-profound hearing loss. This review article will attempt to unravel some of the challenges and associated considerations when fitting adults and children with severe-to-profound hearing loss.
Prior to the fitting of hearing aids, clinicians and patients must discuss the best treatment options for the physical and audiologic needs of the patients. To be able to confidently make these decisions, the clinician should complete a medical and audiological case history. Additionally, clinicians need accurate results from a comprehensive audiologic evaluation. The evaluation should include the following: pure-tone testing, word recognition testing, speech-in-noise testing, and loudness discomfort level measures. This article will outline the process and procedures for acquiring this information in line with the Audiology Practice Standards Organization (APSO) Guidelines for Adult Hearing Aid Fittings Standards 1 and 4. This article will also discuss how results can affect decision-making during the hearing aid selection and fitting process.
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