Cochleostomy versus round window insertions: Influence on functional outcomes in electric-acoustic stimulation of the auditory system

Oliver F. Adunka, Margaret T. Dillon, Marcia C. Adunka, English R. King, Harold C. Pillsbury, Craig A. Buchman

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

OBJECTIVE: To assess the potential influence of 2 different surgical access routes to scala tympani for hearing preservation cochlear implantation on outcomes. STUDY DESIGN: Retrospective review. SETTING: Tertiary care academic center. PATIENTS: Twenty adult subjects participating in a prospective clinical trial on electric-acoustic stimulation. Subjects underwent cochlear implantation with attempted hearing preservation and subsequent ipsilateral electric-acoustic stimulation of the auditory system. INTERVENTIONS: Eight subjects (40%) were implanted using a round window-related cochleostomy and 12 subjects (60%) via a round window approach. MAIN OUTCOME MEASURES: Postoperative acoustic hearing preservation and speech perception measures were obtained at defined intervals and compared for both groups with and without the use of the external speech processor. RESULTS: The data demonstrate no statistically significant differences in postoperative outcomes for both preservation of residual hearing and unaided and aided speech perception between the cochleostomy and round window groups. CONCLUSION: The results of this investigation suggest that hearing preservation cochlear implantation can be performed either via a round window-related cochleostomy as well as via the round window membrane itself with similar outcomes in terms of both hearing preservation rates as well as speech perception measures.

Original languageEnglish
Pages (from-to)613-618
Number of pages6
JournalOtology and Neurotology
Volume35
Issue number4
DOIs
StatePublished - Apr 2014
Externally publishedYes

Keywords

  • Cochlear implantation
  • Electric acoustic stimulation
  • Hearing preservation
  • Speech perception outcomes
  • Surgical approach

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