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Audiologic limitations of Vibrant Soundbridge device: Is the contralateral hearing aid fitting indispensable?

 Jinsei Jung  ;  Kyung Jin Roh  ;  In Seok Moon  ;  Sung Huhn Kim  ;  Kyu Rin Hwang  ;  Jeon Mi Lee  ;  Jee Hay Hou  ;  Jae Young Choi 
 LARYNGOSCOPE, Vol.126(9) : 2116-2123, 2016 
Journal Title
Issue Date
Adult ; Aged ; Female ; Hearing Aids* ; Hearing Loss, Mixed Conductive-Sensorineural/surgery* ; Hearing Loss, Sensorineural/surgery* ; Hearing Tests ; Humans ; Male ; Middle Aged ; Ossicular Prosthesis* ; Retrospective Studies ; Speech Perception
Vibrant Soundbridge ; binaural hearing ; hearing aid ; mixed hearing loss ; speech perception in noise
OBJECTIVES/HYPOTHESIS: The purpose of this study was to evaluate the audiologic limitations of the Vibrant Soundbridge (VSB) implant and the benefits of contralateral hearing aid (HA) fitting in VSB recipients. STUDY DESIGN: Retrospective study. METHODS: Twenty-three patients with symmetrical sensorineural or mixed hearing loss were enrolled in this study. The patients underwent VSB implantation in one ear and HA fitting in the other. Aided pure-tone audiometry was performed to measure the functional gains of each device. The Korean version of the Hearing in Noise Test (K-HINT) was used to determine the sentence speech perception in a quiet environment and the signal-to-noise ratio (SNR) in a noisy environment. RESULTS: VSB implantation resulted in hearing gains comparable to that of conventional HAs at high frequencies, whereas the functional gains at low frequencies were not satisfactory in the mixed hearing loss group. In these patients, the contralateral HA sufficiently amplified the low frequencies. The results of the K-HINT of the SNR in the VSB-aided ear were not significantly improved when compared to HA-aided contralateral ear. However, binaural fitting of a VSB and HA resulted in substantially improved SNR when compared to the unaided condition. This improvement of the SNR strongly correlated with functional gains at low frequencies in the contralateral HA-aided ear. CONCLUSIONS: Although unilateral VSB implantation is limited in terms of low-tone enhancement and speech perception in noisy environments, contralateral HA fitting can overcome these limitations and increase the efficacy of hearing rehabilitation. LEVEL OF EVIDENCE: 4
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1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Huhn(김성헌)
Roh, Kyung Jin(노경진)
Moon, In Seok(문인석) ORCID logo https://orcid.org/0000-0002-3951-5074
Lee, Jeon Mi(이전미)
Jung, Jinsei(정진세) ORCID logo https://orcid.org/0000-0003-1906-6969
Choi, Jae Young(최재영) ORCID logo https://orcid.org/0000-0001-9493-3458
Hwang, Kyu Rin(황규린)
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