[Cochlear implants reduce tinnitus in older patients in the long term].

Background: Tinnitus is one of the most common otologic comorbidities, particularly in older patients with severe hearing loss or deafness. Cochlear implants (CI) have been used for hearing rehabilitation more and more successfully in elderly patients and CI treatment is performed in Germany without an age limit. The aim of this follow-up study was to assess the tinnitus burden in the long-term follow-up of elderly patients with hearing rehabilitation using CI.

Material and methods: This prospective longitudinal study included 15 patients between 72 and 92 years of age with preoperative tinnitus who had been treated unilaterally with a CI for the first time about six years ago. Monosyllabic speech understanding and tinnitus burden were assessed using the Mini-Tinnitus Questionnaire. The results were compared with our previous study 24, focusing on the first six months.

Results: Six years postoperatively, there was a nonsignificant increase in monosyllabic understanding to 61.7 ± 26.3%, compared with the results six months postoperatively (p = 0.069). The burden of tinnitus showed a stable low mean of 3.9 ± 3.6 points six years postoperatively, compared with the six-month control (p = 0.689) and significantly reduced compared to the preoperative status with 6.9 ± 6.5 points (p = 0.016).

Conclusion: Hearing rehabilitation by using CI leads to a stable improvement of monosyllabic discrimination in elderly people as well as to a stable reduction of tinnitus burden over years.