Natural history of contralateral residual hearing in unilateral cochlear implant users - long-term findings

被引:5
作者
Yehudai, Noam [1 ]
Shpak, Talma [1 ]
Most, Tova [2 ,3 ]
Luntz, Michal [1 ]
机构
[1] Technion Israel Inst Technol, Bruce Rappaport Fac Med, Dept Otolaryngol Head & Neck Surg, Bnai Zion Med Ctr,Cochlear Implant Program, IL-31048 Haifa, Israel
[2] Tel Aviv Univ, Sch Educ, IL-69978 Tel Aviv, Israel
[3] Tel Aviv Univ, Dept Commun Disorders, IL-69978 Tel Aviv, Israel
关键词
Hearing loss; bimodal; hearing aid; SPEECH; RECOGNITION; PERCEPTION; BENEFITS;
D O I
10.3109/00016489.2012.687457
中图分类号
R76 [耳鼻咽喉科学];
学科分类号
100213 ;
摘要
Conclusion: The long-term stability of low-frequency residual hearing found in a significant number of bilateral-bimodal users (cochlear implant (CI) in one ear and a hearing aid (HA) on the other ear; CI/HA) with severe-to-profound or profound hearing loss in the non-implanted ear justifies bilateral-bimodal fitting efforts in this group. Since low-frequency residual hearing tends to deteriorate in some of these CI/HA users, periodic evaluation, which includes pure-tone thresholds and speech perception tests, is mandatory for determining the point in time at which CI/HA hearing is no longer effective, and the patient should accordingly be considered as a candidate for contralateral cochlear implantation. Objective: To determine, in bilateral-bimodal (CI/HA) users with severe-to-profound or profound hearing loss in the non-implanted ear, the rate of residual hearing deterioration in the non-implanted ear after cochlear implantation. Methods: Pure-tone aided and unaided thresholds in the non-implanted ears of 39 CI/HA users at 0.25-4.0 kHz were recorded prospectively up to 6 years after implantation. Results: Group mean threshold values in the non-implanted ears remained stable over 3, 4, 5 and 6 years post-implantation, except for significant deterioration at 4.0 kHz of both unaided (4.2, 5.2, 9.0 and 8.2 dB, respectively) and aided thresholds (8.1, 4.6, 6.1 and 8.3 dB, respectively).
引用
收藏
页码:1073 / 1076
页数:4
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