title: Negative effect of deep cochlear implant electrode insertion on speech perception.
abstract: This case study details the evaluation, explantation, and subsequent reimplantation of a cochlear implant (CI) recipient with an unusually deep electrode array insertion. Although the positive value of sufficiently deep insertion and the effect of insertion variability have been researched, there are few data available that illustrate the detrimental effects on speech recognition when deep insertion corrupts optimal use of the CI. This unique case report challenges the assumption that deeper insertion will result in improved speech understanding and demonstrates the importance of fully evaluating recipients' complaints and recognizing the impact of frequency-to-place mismatch.
authors.affiliation: Mayo Clinic Arizona, AZ, United States. sydlows@ccf.org
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Sydlowski
authors.forename: Sarah R
authors.initials: SR
authors.lastname: Oakley
authors.forename: Sarah A
authors.initials: SA
authors.lastname: Borton
authors.forename: David M
authors.initials: DM
authors.lastname: Barrs
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Cevette
mesh_terms: D000368:Aged; D003051:Cochlea / Q000000981:diagnostic imaging / Q000601:surgery; D019929:Cochlear Implantation / Q000009:adverse effects* / Q000379:methods*; D020878:Device Removal; D004567:Electrodes, Implanted; D005260:Female; D006801:Humans; D011184:Postoperative Period; D057234:Preoperative Period; D012086:Reoperation; D013067:Speech Perception; D014057:Tomography, X-Ray Computed