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- Title
Cochlear implantation via round window or cochleostomy: Effect on hearing in an animal model.
- Authors
Hod, Roy; Attias, Joseph; Raveh, Eyal; Nageris, Ben I.
- Abstract
<bold>Objectives/hypothesis: </bold>Cochlear implantation in patients with residual hearing has increased interest in hearing preservation. Two major surgical approaches to implantation have been devised: via the round window membrane and through cochleostomy. However, the advantages of either approach on hearing preservation have not been established. Due to the great inter- and intravariability among implantees, the current study used a normal-hearing animal model to compare the effect of the two methods on hearing.<bold>Study Design: </bold>Animal study.<bold>Methods: </bold>Thirteen fat sand rats were studied, in which 13 ears were implanted through cochleostomy and 13 via the round window. Hearing thresholds were determined by auditory brainstem responses to air and bone conduction at low and high auditory stimuli.<bold>Results: </bold>The results indicated that each stage of the surgery, primarily the opening of the membranous labyrinth, was accompanied by significant deterioration in hearing. Hearing loss was mainly conductive, with no significant differences between the surgical approaches.<bold>Conclusions: </bold>Both surgical approaches carry similar risk of hearing loss.<bold>Level Of Evidence: </bold>NA Laryngoscope, 126:E375-E378, 2016.
- Subjects
COCHLEAR implants; TREATMENT of deafness; RISK of deafness; AUDITORY evoked response; BONE conduction audiometry; COCHLEA surgery; ANIMAL experimentation; BIOLOGICAL models; BONE conduction; BRAIN stem; COMPARATIVE studies; HEARING; HEARING disorders; HEARING levels; RESEARCH methodology; MEDICAL cooperation; POSTOPERATIVE period; RATS; RESEARCH; SURGICAL complications; EVALUATION research
- Publication
Laryngoscope, 2016, Vol 126, Issue 11, pE375
- ISSN
0023-852X
- Publication type
journal article
- DOI
10.1002/lary.26033