Clinical Trials

The purpose of this study is to determine the quality of life scores for patients that have undergone subtotal petrosectomy and ear canal closure for cholesteatoma and/or chronic otitis media utilizing two previously validated quality-of-life scales.

The purpose of this study is show the effectiveness of a dexamethasone eluting electrode in an adult population with post-lingual, bilateral, moderate to profound sensorineural hearing loss in the reduction of fibrosis (as measured by impedance) when compared to a conventional, non-dexamethasone eluting electrode and in the improvement of speech recognition from preoperative baseline.

To determine if changes in cochlear implant electrode impedances change as a function current level and charge that is used to measure electrode impedances.

The primary objective of this study is to determine the hearing preservation advantage, defined as the increased chance of preservation of residual hearing (i.e., low frequency pure tone average ≤ 80 dB HL), of ECochG-guided CI electrode insertions in EAS candidates.

The purpose of this study is to determine changes in cochlear implant electrode impedances as a function over a period of time.

The purpose of this study is to analyze clinical and audiological outcomes in a large cohort of cochlear implant recipients implanted at the Mayo Clinic since its initiation in 1982.

Hypothesis: Cochlear implant and Auditory Brainstem Implant outcomes continue to improve secondary to improved device design, surgical approach, and advanced programming.