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Title:

??(Hearing loss)

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Title: Sensorineural Hearing loss Author: hj Last modified by: wu hao Created Date: 12/21/1999 12:00:28 PM Document presentation format: – PowerPoint PPT presentation

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Tags: deaf | hearing | loss

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Title: ??(Hearing loss)


1
??(Hearing loss)
  • ??????????????
  • ????-????
  • ? ?

2
? ?
  • ?? ?????????
  • ????10 ???
  • ??????????
  • ??

3
? ?
  • ?????(conductive hearing loss)
  • ???????(sensorineural hearing loss)
  • ???(cochlear)
  • ???(retrocochlear)
  • ????(mixed hearing loss)

4
????Degrees of hearing loss
  • ???? 2039dB
  • ???? 4069dB
  • ???? 7089dB
  • ????? gt90dB

5
???????????Congenital hearing loss and
hereditary hearing loss
  • ????? ???????,?????,????
  • ????????????????,??????
  • ???????
  • ???????
  • ??? ????

6
????(Presbycusis)hearing of old age, the effects
of aging
  • ???????
  • ????????????
  • ??????
  • ?????????????

7
?????Ototoxicity
  • Ototoxicity is the tendency of certain
    therapeutic agents and other chemical substances
    to cause functional impairment of the inner ear,
    and especially of the end organs and neurons of
    the eighth cranial nerve.
  • ??????????????????????,???????????????

8
  • ??????????
  • ???????????, ????,
  • ????
  • ????? ?????
  • ???????
  • ??
  • ???
  • ??

9
?????????
  • ??????
  • ?????????
  • ??? ?????
  • ???????

10
????Noise-induced hearing loss
  • ??
  • ???????????
  • ?????
  • ????????? 3-6-kHz ??
  • ??????????????????
  • ?????????

11
?????(Idiopathic sudden hearing loss)
  • 3????????????30dB??????????
  • ???????
  • ??????????????
  • ????? ???????????

12
???????Autoimmune hearing loss
  • ??????,????, ???????????
  • ????
  • ?????????

13
???????????
  • ????
  • ???
  • ?????

14
? ?1.??
  • 1. ??, ????????????
  • ?????
  • ????????????
  • ???????
  • 2. ??????????
  • ??, ??, ??, ??
  • ?? ?????

15
? ?
  • 3. ???????
  • 4. ????????
  • 5. ?????
  • 6. ?????
  • 7. ????
  • 8. ??????

16
???????
  • ???? ??????
  • ???? WT?RT
  • ???????
  • ?????

17
?????
  • ??????
  • ????
  • ???????
  • ??????
  • ????

18
?????
  • ???? CT
  • ????
  • ????
  • ??
  • ?????
  • MRI ????
  • ??????
  • ??

19
?????
  • CIC, ESR, Ig, CD3, CD4, ?
  • ??????70 (Hsp-70)

20
? ?
  • 1. ????
  • ??????
  • ???????
  • ???

21
? ?
  • 2. ???
  • ???? ??????
  • ?????70dB

22
  • 3. ??????
  • ??????????????????
  • ???????????????

23
???????
  • ????????????????
  • ???????
  • ????!
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