Hearing preservation outcomes with a mid-scala electrode in cochlear implantation

Jacob B. Hunter, Rene H. Gifford, George B. Wanna, Robert F. Labadie, Marc L. Bennett, David S. Haynes, Alejandro Rivas

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Objective: To evaluate hearing preservation (HP) outcomes in adult cochlear implant recipients with a mid-scala electrode. Setting: Tertiary academic center. Patients: Adult patients implanted with a mid-scala electrode between May 2013 and July 2015. Interventions: Cochlear implantation. Main Outcome Measure(s): Age, sex, surgical approach, residual hearing changes post cochlear implantation, HP rates using different published classifications, and speech perception scores. Results: Fifty ears for 47 patients (mean age, 58.2 yr; range, 23-86) were implanted with the electrode. Recognizing that not all patients were true HP candidates and/or underwent generally accepted HP surgical techniques, 39 ears had preoperative low-frequency hearing (audiometric threshold-85 dB HL at 250 Hz), 24 preserved acoustic hearing postoperatively (75.0%). Patients who had preserved acoustic hearing were implanted via round window (N =18), extended round window (N =4), or via cochleostomy (N=2) approaches. Mean threshold elevation for lowfrequency pure-Tone average (125, 250, and 500 Hz) was 20.2 dB after surgery. 43.8% of patients had aidable lowfrequency hearing at activation, 30.0% at 6-months postoperatively, and 30.8% 1-year postoperatively. Using a formula outlined by Skarzynski and colleagues, at 6-months postoperatively, 15.0% of patients had complete HP, whereas 40.0% had partial HP. At 1-year, these percentages decreased to 0% and 38.5%, respectively. Age, type of approach, and perioperative steroid use were not correlated with HP outcomes at activation and 6-months postoperatively ( p>0.05). Conclusion: The mid-scala electrode evaluated allows preservation of low-frequency hearing in patients undergoing cochlear implantation at rates and degrees of preservation close to other reports in the cochlear implant literature.

Original languageEnglish (US)
Pages (from-to)235-240
Number of pages6
JournalOtology and Neurotology
Volume37
Issue number3
DOIs
StatePublished - Jan 1 2016

Fingerprint

Cochlear Implantation
Hearing
Electrodes
Cochlear Implants
Acoustics
Ear
Implanted Electrodes
Speech Perception

Keywords

  • Cochlear implantation
  • Hearing preservation.

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Sensory Systems
  • Clinical Neurology

Cite this

Hunter, J. B., Gifford, R. H., Wanna, G. B., Labadie, R. F., Bennett, M. L., Haynes, D. S., & Rivas, A. (2016). Hearing preservation outcomes with a mid-scala electrode in cochlear implantation. Otology and Neurotology, 37(3), 235-240. https://doi.org/10.1097/MAO.0000000000000963

Hearing preservation outcomes with a mid-scala electrode in cochlear implantation. / Hunter, Jacob B.; Gifford, Rene H.; Wanna, George B.; Labadie, Robert F.; Bennett, Marc L.; Haynes, David S.; Rivas, Alejandro.

In: Otology and Neurotology, Vol. 37, No. 3, 01.01.2016, p. 235-240.

Research output: Contribution to journalArticle

Hunter, JB, Gifford, RH, Wanna, GB, Labadie, RF, Bennett, ML, Haynes, DS & Rivas, A 2016, 'Hearing preservation outcomes with a mid-scala electrode in cochlear implantation', Otology and Neurotology, vol. 37, no. 3, pp. 235-240. https://doi.org/10.1097/MAO.0000000000000963
Hunter, Jacob B. ; Gifford, Rene H. ; Wanna, George B. ; Labadie, Robert F. ; Bennett, Marc L. ; Haynes, David S. ; Rivas, Alejandro. / Hearing preservation outcomes with a mid-scala electrode in cochlear implantation. In: Otology and Neurotology. 2016 ; Vol. 37, No. 3. pp. 235-240.
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