Document Detail


Interaural Differences of Distortion Product Otoacoustic Emission Amplitudes in Patients with Unilateral Tinnitus.
MedLine Citation:
PMID:  23151834     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
ObjectiveWe aimed to determine whether abnormalities in outer hair cell (OHC) function were related to tinnitus through interaural comparison of distortion product otoacoustic emissions (DPOAEs).Study DesignCross-sectional study.SettingTertiary care university teaching hospital.ParticipantsTwenty-seven patients with unilateral tinnitus and pure-tone average of both ears ≤25 dB hearing loss (HL) at 500, 1000, 2000, and 4000 Hz were included.Subjects and MethodsPure-tone thresholds observed at 500 to 16,000 Hz and DPOAE amplitudes at f2 frequencies of 1001 to 6348 Hz were compared between the tinnitus ears and nontinnitus ears in patients with unilateral tinnitus.ResultsThe pure-tone averages (13 ± 6 dB HL) in the nontinnitus ears were similar to those (15 ± 6 dB HL) in the tinnitus ears. There were no differences in pure-tone averages at all frequencies tested. While the DPOAE amplitudes measured at f2 frequencies of 1001 to 3174 Hz in tinnitus ears were not different from those in the nontinnitus ears, the tinnitus ears showed significantly reduced DPOAE amplitudes when compared with the nontinnitus ears at frequencies of 4004 to 6348 Hz.ConclusionOHC dysfunction was correlated with tinnitus at high frequencies, and DPOAE amplitudes can provide additional information about cochlear dysfunction, which is complementary to pure-tone audiometry.
Authors:
Joon Pyo Park; Hyun Woo Lim; Byoung Soo Shim; Tae Su Kim; Jong Woo Chung; Tae Hyun Yoon; Hong Ju Park
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-14
Journal Detail:
Title:  Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery     Volume:  -     ISSN:  1097-6817     ISO Abbreviation:  Otolaryngol Head Neck Surg     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508176     Medline TA:  Otolaryngol Head Neck Surg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Otorhinolaryngology-Head and Neck Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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