Objective: Conventional hearing AIDS have some limitations in overcoming a large air-bone gap or in cases of severe high-frequency hearing loss. The authors aimed to evaluate the benefit of a new bimodal hearing configuration combining cochlear implantation (CI) and middle ear implant (MEI) in patients with severe mixed conductive and ski-slope hearing loss. Study Design: Retrospective case review. Setting: Tertiary referral center. Patients: Four patients with severe to profound hearing loss, who underwent CI in one ear and MEI in the other, were enrolled. Intervention: Audiological outcomes were assessed at least 6 months after the MEI/CI operation. Pure-tone audiometry (PTA) in unaided, CI-aided, and MEI-aided conditions were measured. Main Outcome Measures: Average threshold changes in bands of frequencies (<1 kHz, ≥1 kHz) were compared between MEI-aided and HA-aided conditions. The Korean version of the Hearing-in-Noise Test (K-HINT), and speech perception score in noisy and quiet conditions were evaluated in the bimodal configuration (i.e., MEI with CI). Results: MEI-aided PTA was especially increased in high-frequency areas (≥1 kHz). Speech perception in noisy and quiet conditions demonstrated better scores in the bimodal configuration. K-HINT also demonstrated better scores in the bimodal configuration. Conclusions: There is an increasing number of patients with unilateral CI and residual hearing in the contralateral ear. The benefits of a new bimodal hearing configuration with CI and MEI were demonstrated in patients with severe high-frequency hearing loss or mixed conductive hearing loss in the contralateral ear.
Bibliographical noteFunding Information:
Address correspondence and reprint requests to Jae Young Choi, M.D., Ph.D., Department of Otorhinolaryngology, Yonsei University College of Medicine, Severance Hospital, Yonsei University Health System, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea; E-mail: email@example.com Financial Disclosures: This work was supported by the Bio & Medical Technology Development Program of the National Research Foundation (NRF) funded by the ministry of Science, ICT & Future Planning (NRF-2014M3A9D5A01073865) and the Technology Innovation Program (10060136) funded by the Ministry of Trade, Industry & Energy (MI, Korea) to J.M.L. The authors disclose no competing interests.
All Science Journal Classification (ASJC) codes
- Sensory Systems
- Clinical Neurology