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Laryngoscope Investig Otolaryngol. 2017 Sep 21;2(5):262-268. doi: 10.1002/lio2.91. eCollection 2017 Oct.

Third-generation bisphosphonates for cochlear otosclerosis stabilizes sensorineural hearing loss in long-term follow-up.

Author information

1
Department of Otolaryngology , Massachusetts Eye and Ear Harvard Medical School Boston Massachusetts U.S.A.
2
Department of Medicine , Brigham and Women's Hospital Harvard Medical School Boston Massachusetts U.S.A.

Abstract

Objective:

To assess long-term hearing outcomes in patients treated with third-generation bisphosphonates for otosclerosis-related progressive sensorineural hearing loss (SNHL).

Study Design:

Retrospective case series review.

Methods:

We performed a retrospective case series review of patients with otosclerosis and progressive SNHL. Patients were treated with either risedronate or zoledronate after a diagnosis of otosclerosis with a significant SNHL component. Bone conduction pure tone threshold averages (BC-PTAs) and word recognition scores (WRS) before and after bisphosphonate administration in long-term follow-up was analyzed. Significant change in BC-PTA was defined as greater than 10dB or between 4% and 18% in WRS based on binomial variance.

Results:

Seven patients were identified and 14 ears met inclusion criteria. Three patients were female and the mean age was 48.3 ± 10.3 years. The mean duration between treatment with bisphosphonate administration and long-term post-treatment follow-up audiometry was 87.6 ± 18.3 months, with a range of 61.6 to 109.1 months and median of 89.2 months. Analysis using BC-PTA and WRS demonstrated that 11 ears remained stable while 2 improved and 1 worsened. No patient experienced any major complication as the result of bisphosphonate therapy.

Conclusion:

Treatment with third-generation bisphosphonates is associated with stability in otosclerosis-related sensorineural hearing over 5- to 9-year period. These results suggest that such medications may prevent the progression of SNHL in patients with otosclerosis.

Level of Evidence:

4 (Case series).

KEYWORDS:

Otosclerosis; bisphosphonates; cochlear otosclerosis; sensorineural hearing loss

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