Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

Akasaka, Sakie; Nishimura, Tadashi; Hosoi, Hiroshi; Saito, Osamu; Shimokura, Ryota; Morimoto, Chihiro; Kitahara, Tadashi

doi:10.3390/audiolres11020026

Cited by 11 publications

(13 citation statements)

References 40 publications

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“…As a result, an improvement in the SRS was observed when wearing CC-HA. This result was similar to the result of the study reported by Akasaka et al [16], who examined the binaural hearing effect of CC-HA in patients with unilateral aural atresia. However, in our study, the average difference with and without the CC-HA was small (approximately 5%), and when the patients with unilateral conductive hearing loss were divided into the purchase and non-purchase groups, there was no significant difference in the improvement of SRS between the two groups.…”

Section: Discussionsupporting

confidence: 92%

The Effects of Utilizing Cartilage Conduction Hearing Aids among Patients with Conductive Hearing Loss

Kakuki,

Miyata,

Yoshida

et al. 2023

Audiology Research

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The cartilage-conduction hearing aid (CC-HA) is a new hearing device that is suitable for use in patients with conductive hearing loss. It has been 5 years since the introduction of the CC-HA. Although the number of users has increased, the CC-HA is not yet widely known. This study examines the effects of CC-HA on patients with conductive hearing loss and investigates factors that affect the willingness to use the device by comparing purchasers and non-purchasers of CC-HA in patients with unilateral conductive hearing loss. Eight patients had bilateral conductive hearing loss, and 35 had unilateral conductive hearing loss. Each patient underwent sound field tests and speech audiometry, and the effects of the CC-HA were compared with those of conventional bone conduction hearing aids (BC-HA). In patients with bilateral conductive hearing loss, the CC-HA was non-inferior to BC-HA. The CC-HA improved the hearing thresholds and speech recognition in patients with unilateral conductive hearing loss. Moreover, in patients with unilateral conductive hearing loss, experiencing the effect of wearing the CC-HA under conditions such as putting noise in the better ear could affect patients’ willingness to use the CC-HA.

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Section: Discussionsupporting

confidence: 92%

The Effects of Utilizing Cartilage Conduction Hearing Aids among Patients with Conductive Hearing Loss

Kakuki,

Miyata,

Yoshida

et al. 2023

Audiology Research

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“…The transducer can be attached to the cartilage part in humans via a special double-sided tape. As previous studies stated [12,[23][24][25][26][27], CCHA can be used for sound transmission even in aural atresia. Most issues with bone conduction (BC) hearing aids are related to the properties of the transducer and the form of conduction.…”

Section: Introductionmentioning

confidence: 79%

Clinical Trial for Cartilage Conduction Hearing Aid in Indonesia

et al. 2021

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Hearing improvement represents one of the may valuable outcomes in microtia and aural atresia reconstruction surgery. Most patients with poor development in their hearing function have had a severe microtia. Conventional methods to improve hearing function are bone conduction and bone anchored hearing aids. Cartilage conduction hearing aids (CCHA) represents a new amplification method. This study assessed the outcomes and evaluated the impact and its safety in the patients with microtia and aural atresia whose hearing dysfunction did not improve after surgery for ear reconstruction in our hospital. Hearing functions were evaluated with pure tone audiometry or sound field testing by behavioral audiometry and speech audiometry before and after CCHA fitting. As a result, there was a significant difference between unaided and aided thresholds (p < 0.001). Speech recognition threshold and speech discrimination level also significantly improved with CCHA. The average functional gains of 14 ears were 26.9 ± 2.3 dB. Almost all parents of the patients reported satisfaction with the performance of CCHA, and daily communication in children with hearing loss also became better than usual.

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“…Cartilage conduction (CC) hearing devices are a new option for atretic ears [11][12][13][14][15]. This device delivers sound to the aural cartilage using a small lightweight transducer.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Cartilage Conduction Hearing Devices Designed by Ear Impression and Computed Tomography

et al. 2023

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The ear molds and shells of hearing devices are generally designed using ear impressions. Computed tomography (CT) can provide information concerning ear structure, which can be utilized in computer-aided design to create hearing devices. This study aimed to compare the differences in hearing devices designed using either ear impressions or CT images. The ear chip of a cartilage conduction (CC) hearing device was designed based on the ear impression and CT images of patients with aural atresia. Three patients with bilateral (n = 1) or unilateral (n = 2) aural atresia participated in this study. The aided thresholds and subjective evaluations were compared. There were no serious problems with the use of either device, and no remarkable differences were observed regarding their respective audiological and subjective benefits. Regarding the subjective patient preferences, the hearing aid with the device designed via CT imaging was better in three ears of two patients, whereas the wearing comfort of the transducer was better for the device designed via the ear impression. The subjective evaluation of appearance varied among the cases. Finally, a device that was designed using CT findings was purchased for one patient. CT images can be utilized in computer-aided design to create CC hearing devices.

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Benefits of Cartilage Conduction Hearing Aids for Speech Perception in Unilateral Aural Atresia

Cited by 11 publications

References 40 publications

The Effects of Utilizing Cartilage Conduction Hearing Aids among Patients with Conductive Hearing Loss

The Effects of Utilizing Cartilage Conduction Hearing Aids among Patients with Conductive Hearing Loss

Clinical Trial for Cartilage Conduction Hearing Aid in Indonesia

Comparison of Cartilage Conduction Hearing Devices Designed by Ear Impression and Computed Tomography

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