Journal article
Risk factors for loss of ipsilateral residual hearing after hybrid cochlear implantation
Otology & neurotology, Vol.35(8), pp.1403-1408
09/2014
DOI: 10.1097/mao.0000000000000389
PMCID: PMC4152771
PMID: 24979394
Abstract
Residual low-frequency acoustic hearing benefits cochlear implantees in difficult listening situations such as understanding speech in noise and music appreciation. Most subjects retain functional residual hearing in the operated ear. A small number of patients, however, will lose significant ipsilateral residual hearing after short-electrode cochlear implantation. The objectives of this retrospective series are to determine whether predisposition to hearing loss after implantation exists in a subset of patients and to assess the functional impact of this hearing loss on clinical measures of combined electric and acoustic hearing.
Retrospective case series.
Multicenter clinical trial; tertiary care facility.
Hearing preservation cochlear implant recipients.
Frequency-averaged ipsilateral hearing loss at 1 year after activation.
Eighty-five patients from the Hybrid S8 FDA trial had serial postoperative audiometric measurements. Twenty-two of these patients, implanted at the home institution, provided additional medical data. Univariate analysis (Pearson's, Spearman's, Student's t test) showed that the severity of hearing loss at 1 year after activation was significantly correlated with age, male gender, and noise-induced hearing loss as the etiology of hearing impairment. A multivariate regression model corroborated these variables. No other medical factors were predictive. Clinical measures of speech perception (Consonant-Nucleus-Consonant and Hearing in Noise Test) worsened with hearing loss in ipsilateral but not bilateral listening conditions.
Age, male gender, and a history of noise-induced hearing loss correlate with the severity of hearing loss at 1 year after activation. Even the most severely affected patients benefit from bilateral electric and acoustic inputs.
Details
- Title: Subtitle
- Risk factors for loss of ipsilateral residual hearing after hybrid cochlear implantation
- Creators
- Jonathan C Kopelovich - Department of Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa; †Department of Otolaryngology Head and Neck Surgery, Oregon Health Science University, Portland, Oregon; and ‡Department of Biostatistics, College of Public Health, University of Iowa, Iowa City, Iowa, U.S.ALina A J ReissJacob J OlesonEmily S LundtBruce J GantzMarlan R Hansen
- Resource Type
- Journal article
- Publication Details
- Otology & neurotology, Vol.35(8), pp.1403-1408
- DOI
- 10.1097/mao.0000000000000389
- PMID
- 24979394
- PMCID
- PMC4152771
- NLM abbreviation
- Otol Neurotol
- ISSN
- 1531-7129
- eISSN
- 1537-4505
- Publisher
- United States
- Grant note
- T32 DC000040 / NIDCD NIH HHS 2P50DC000242-26A1 / NIDCD NIH HHS P50 DC000242 / NIDCD NIH HHS M01 RR000059 / NCRR NIH HHS RR00059 / NCRR NIH HHS
- Language
- English
- Date published
- 09/2014
- Academic Unit
- Molecular Physiology and Biophysics; Biostatistics; Neurosurgery; Otolaryngology
- Record Identifier
- 9983997451402771
Metrics
16 Record Views