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pathophysiology of otitis media.pptx
1.
2. Presence of fluid in middle ear results
from a negative pressure in the
middle ear caused by Eustachian tube
obstruction
Complain of hearing loss, fullness in
the ear or a sensation of congestion or
popping and cracking noises
serous otitis media
3. ACUTE OTITIS MEDIA
Rhino sinusitis, adenoid hypertrophy or
allergic rhinitis
Bacteria or viruses enter the middle ear
after ET dysfunction caused by
obstruction, contaminated secretion in the
naso pharynx and tympanic membrane
perforation.
A purulent exudate is usually present in
middle ear conductive hearing loss
4. CHRONIC OTITIS MEDIA
Chronic retraction pocket of the
tympanic membrane creating a
persistently high negative pressure
of the middle ear
The skin forms a sac that filled with
degenerate skin and sebaceous
materials, the sac can attach to the
structure of the middle ear, mastoid
or both
5. CHRONIC MASTOIDITIS
Formation of cholesteatoma , it is a
cystlike lesion of the middle and inner
ear
Not treated it burst or destroy mastoid
bone, enlarge damage facial nerve,
horizontal canal and destruction of
other surrounding structures.
