Effect of transducer placements on thresholds in ears with an abnormal ear canal and severe conductive hearing loss

Autor: Tadashi Nishimura, Hiroshi Hosoi, Osamu Saito, Ryota Shimokura, Chihiro Morimoto, Tadao Okayasu, Tadashi Kitahara
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Laryngoscope Investigative Otolaryngology, Vol 6, Iss 6, Pp 1429-1435 (2021)
Druh dokumentu: article
ISSN: 2378-8038
DOI: 10.1002/lio2.697
Popis: Abstract Objectives Providing hearing compensation to patients with aural atresia is considerably challenging. Hearing aid transducers vibrating the aural cartilage (cartilage conduction; CC) have been devised, and hearing aids utilizing them (CC hearing aids) have quickly become a beneficial option for aural atresia in clinical applications. However, it remains unclear which placement (on the aural cartilage or mastoid) is beneficial to signal transmission. Methods This study included 35 patients (53 ears with an abnormal ear canal and severe conductive hearing loss) who were using CC hearing aids. Thresholds were compared between the transducers on the aural cartilage and on the mastoid. Results In ears with bony aural atresia, thresholds were significantly improved when the transducer was placed on the aural cartilage compared to when it was placed on the mastoid for frequencies ≤ 500 Hz (P
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