Comprehensive analysis of cochlear implant failure: Usefulness of clinical symptom-based algorithm combined with in situ integrity testing

Abstract

OBJECTIVE: Accurate diagnosis of cochlear implant failures is important for management; however, appropriate strategies to assess possible device failures are not always clear. The purpose of this study is to understand correlation between causes of device failure and the presenting clinical symptoms as well as results of in situ integrity testing and to propose effective strategies for diagnosis of device failure. STUDY DESIGN: Retrospective case review. SETTING: Cochlear implant center at a tertiary referral hospital. PATIENTS: Twenty-seven cases with suspected device failure of Cochlear Nucleus systems (excluding CI512 failures) on the basis of deterioration in auditory perception from Ja..