title: [The appearance of contralateral otoacoustic emissions with unilateral cochlear hearing loss].
abstract: OBJECTIVE
  To investigate the latent influence on the contralateral ear when one ear was involves by different deaf elements.
  
  
  METHODS
  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.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  In all sorts of deaf elements, some have an effect on binaural ears, the others have an effect on unilateral ear.
authors.affiliation: Department of Otolaryngology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022.
authors.forename: Qingtian
authors.initials: Q
authors.lastname: Li
authors.forename: Xiangli
authors.initials: X
authors.lastname: Zeng
authors.forename: Naichuan
authors.initials: N
authors.lastname: Zhong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003638:Deafness / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017084:Otoacoustic Emissions, Spontaneous