Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting
Background: During hearing aid (HA) fitting, individuals may experience better speech discrimination at normal speech levels and worse discrimination at loud speech levels than without an HA. Therefore, we investigated factors that worsen speech discrimination when the speech sound level increases....
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| Format: | Article |
| Language: | English |
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AVES
2024-11-01
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| Series: | Journal of International Advanced Otology |
| Online Access: | https://www.advancedotology.org/en/consideration-of-sufficient-and-insufficient-benefits-in-hearing-aid-fitting-131966 |
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| author | Yoshihiro Nitta Hajime Sano Shogo Furuki Sachie Umehara Yuki Hara Taku Yamashita |
| author_facet | Yoshihiro Nitta Hajime Sano Shogo Furuki Sachie Umehara Yuki Hara Taku Yamashita |
| author_sort | Yoshihiro Nitta |
| collection | DOAJ |
| description | Background: During hearing aid (HA) fitting, individuals may experience better speech discrimination at normal speech levels and worse discrimination at loud speech levels than without an HA. Therefore, we investigated factors that worsen speech discrimination when the speech sound level increases.
Methods: Speech discrimination was measured in patients aged >20 years who had average hearing thresholds <90 dB on pure-tone audiometry. An insufficient benefit was defined as speech discrimination being better at 65 dB sound pressure level (SPL) with HAs than without HAs and worse at 80 dB SPL.
Results: Of the 251 participants (296 ears), 229 and 25 had sufficient benefit and insufficient benefit, respectively. Functional gains (FGs) of sufficient benefit were approximately 1/3 gain (1/3 G) at 500 and 4000 Hz and slightly larger at 1000 and 2000 Hz. Functional gains of insufficient benefit were approximately 1/2 G at 1000 and 2000 Hz, smaller at 500 and 4000 Hz, and approximately 1/3 G at 250 Hz. Moreover, the difference between 1/2 G and FG was significantly larger in the sufficient benefit group at 250 500, and 4000 Hz than in the insufficient benefit group. Additionally, the average compression ratio at 50-80 dB SPL in the insufficient benefit group was approximately 1.1 to 1.2, slightly lower than the standard values.
Conclusion: Adjusting the compression ratio and lowering the FG to approximately 1.5 and 1/3 G, respectively, may help improve speech discrimination if it worsens with increasing sound levels during HA fitting. |
| format | Article |
| id | doaj-art-62d93b24d06247c6a3d42b0e36852ad7 |
| institution | Kabale University |
| issn | 2148-3817 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | AVES |
| record_format | Article |
| series | Journal of International Advanced Otology |
| spelling | doaj-art-62d93b24d06247c6a3d42b0e36852ad72025-01-30T10:32:35ZengAVESJournal of International Advanced Otology2148-38172024-11-0120650250610.5152/iao.2024.241565Consideration of Sufficient and Insufficient Benefits in Hearing Aid FittingYoshihiro Nitta0https://orcid.org/0000-0003-4260-4673Hajime Sano1https://orcid.org/0000-0002-0645-2521Shogo Furuki2https://orcid.org/0000-0001-5873-8604Sachie Umehara3https://orcid.org/0000-0002-6290-2187Yuki Hara4Taku Yamashita5https://orcid.org/0000-0003-0441-2611Department of Otorhinolaryngology and Head and Neck Surgery, Kitasato University School of Medicine, Kanagawa, JapanDepartment of Rehabilitation, Kitasato University School of Allied Health Sciences, Kanagawa, JapanFuruki Otorhinolaryngology Clinic, Kanagawa, Japanhttps://orcid.org/0000-0002-6290-2187Department of Rehabilitation, Kitasato University School of Allied Health Sciences, Kanagawa, JapanDepartment of Otorhinolaryngology and Head and Neck Surgery, Kitasato University School of Medicine, Kanagawa, JapanBackground: During hearing aid (HA) fitting, individuals may experience better speech discrimination at normal speech levels and worse discrimination at loud speech levels than without an HA. Therefore, we investigated factors that worsen speech discrimination when the speech sound level increases. Methods: Speech discrimination was measured in patients aged >20 years who had average hearing thresholds <90 dB on pure-tone audiometry. An insufficient benefit was defined as speech discrimination being better at 65 dB sound pressure level (SPL) with HAs than without HAs and worse at 80 dB SPL. Results: Of the 251 participants (296 ears), 229 and 25 had sufficient benefit and insufficient benefit, respectively. Functional gains (FGs) of sufficient benefit were approximately 1/3 gain (1/3 G) at 500 and 4000 Hz and slightly larger at 1000 and 2000 Hz. Functional gains of insufficient benefit were approximately 1/2 G at 1000 and 2000 Hz, smaller at 500 and 4000 Hz, and approximately 1/3 G at 250 Hz. Moreover, the difference between 1/2 G and FG was significantly larger in the sufficient benefit group at 250 500, and 4000 Hz than in the insufficient benefit group. Additionally, the average compression ratio at 50-80 dB SPL in the insufficient benefit group was approximately 1.1 to 1.2, slightly lower than the standard values. Conclusion: Adjusting the compression ratio and lowering the FG to approximately 1.5 and 1/3 G, respectively, may help improve speech discrimination if it worsens with increasing sound levels during HA fitting.https://www.advancedotology.org/en/consideration-of-sufficient-and-insufficient-benefits-in-hearing-aid-fitting-131966 |
| spellingShingle | Yoshihiro Nitta Hajime Sano Shogo Furuki Sachie Umehara Yuki Hara Taku Yamashita Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting Journal of International Advanced Otology |
| title | Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting |
| title_full | Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting |
| title_fullStr | Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting |
| title_full_unstemmed | Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting |
| title_short | Consideration of Sufficient and Insufficient Benefits in Hearing Aid Fitting |
| title_sort | consideration of sufficient and insufficient benefits in hearing aid fitting |
| url | https://www.advancedotology.org/en/consideration-of-sufficient-and-insufficient-benefits-in-hearing-aid-fitting-131966 |
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