2. OTOSCLEROSIS
ā Otosclerosis or āhardening of the earā result from
the formation of an abnormal bone growth along
the stapes in the middle ear
ā With the new bone growth , the stapes become
immobile prevents transmission as sound
vibration into the ear, leading to conductive
hearing loss
ā Otosclerosis usually affect the both ears
5. CLASSIFICATION
Histological otosclerosis:- This type of
otosclerosis does not produce any
symptoms during life but is revealed only at
postmortem
Clinical otosclerosis There are three sub types
ā Stapedial otosclerosis
ā Cochlear otosclerosis
ā Mixed otosclerosis
6. CLASSIFICATION
ā Stapedial otosclerosis:- The otosclerosis focus
may produce ankylosis of the membraneous
labyrinth
ā Cochlear otosclerosis:- The otosclerotic process
proceeds upon the membraneous labyrinth
producing sensory-neural deafness
ā Mixed otosclerosis:- Otosclerosis causes both
fixation of the stapes as well as in involvement of
the labyrinth so that is mixed hearing loss
7.
8.
9. CAUSES
ā Exact cause is not known
ā Heredity: Family history of deafness is present
in 50% of cases
ā Viral infection(Measles etc.)
ā Other ear conditions
11. DIAGNOSTIC EVALUATION
ā History
ā Physical examination
ā Tuning fork test
ā Audiometry test
ā Tympanocentesis āsend the fluid of middle ear for
culture
ā CT scan ā collection of fluid in ear & mastoid
region , abscess formation
ā MRI ā evaluation of tumor & soft tissue
ā Audiography ā to assess hearing capability
12. MANAGEMENT
ā Otosclerosis may slowly get worse. The
condition may not require treatment until one
having severe hearing problems
ā Administer analgesics such as ā
ā¢ IBUPROFEN
ā¢ OXYCODONE
ā¢ ACETAMENOPHEN (PCM)
ā Hearing aid may be used to treat the hearing
loss
13. SURGICAL MANAGEMENT
ā¢ Stapedectomy:- The removal of portion of the
sclerotic stepes footplate of stapes or complete
removal of the stapes and the implant with
prosthesis to maintain suitable conduction.
ā¢ Stapedotomy:- Modern surgery called
stapedotomy is performed by drilling a small hole
in the stapes footplate with micro drill or laser,
and the insertion of a piston like prosthesis
16. SELF CARE AT HOME (POST-
OPERATIVE)
ā¢ Take medicine as prescribed
ā¢ Blow nose gently
ā¢ Sneeze and cough with mouth open for few weeks after surgery
ā¢ Avoid heavy lifting, straining and bending
ā¢ Popping and crackling sensation are normal for 3-5 weeks after
surgery
ā¢ Temporary hearing loss is normal in operative ear
ā¢ Change cotton ball in the ear as needed
ā¢ Avoid getting in water for 2 weeks after surgery