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Published on: January 22, 2010
[The appearance of contralateral otoacoustic emissions with unilateral cochlear hearing loss]
Qingtian Li1, Xiangli Zeng, Naichuan Zhong
1Department of Otolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022.
Objective:
To investigate the latent influence on the contralateral ear when one ear was involves by different deaf elements.
Method:
TEOAE and DPOAE were recorded from contralateral ears with unilateral cochlear hearing loss, who were divided into 5 groups, group S1, sudden deafness last within two months (9 ears), group S2, sudden deafness last over one year or so(6 ears), Meniere's disease (13 ears M1, M2) cochlear hearing loss of unknown etiology(7 ear, UNK), using ILO-96 analyzer system.
Result:
Response amplitude, wave reproducibility, band reproducibility of TEOAE in S1, M2 were significantly lower than normal values. Amplitude of DPOAE in S1, M2 were significantly lower than normal values. All record were the same with normal in S2, M1. UNK.
Conclusion:
In all sorts of deaf elements, some have an effect on binaural ears, the others have an effect on unilateral ear.
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