16068530
Description
Mind Map by Salma Moustafa, updated more than 1 year ago
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Created by Salma Moustafa
about 7 years ago
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Otitis Media
- Anatomy of the ear
- mechanism of hearing
- Sound waves enter to EAC , causing
vibration to the TM and attached
ossicles in middles ear:
- Malleus attached to the center of TM &
pulls the tensor tympani medially.
- Stapedius ms pull the stapes
outward against the oval
window.
- Set up waves in fluids of
cochlea causing
vibration of BM .
- up-and-down movement of waves
to be changed into in-and-out
motion of the tectorial
membrane.
- Hair cells”steriocilia”> bend toward
longer cells> excitation.
- Hair cells”steriocilia”> bend toward
longer cells> excitation.
- up-and-down movement of waves
to be changed into in-and-out
motion of the tectorial
membrane.
- Set up waves in fluids of
cochlea causing
vibration of BM .
- Stapedius ms pull the stapes
outward against the oval
window.
- Malleus attached to the center of TM &
pulls the tensor tympani medially.
- neurological pathway for hearing
- Sound waves enter to EAC , causing
vibration to the TM and attached
ossicles in middles ear:
- Complications
- Cholesteatoma
- Is epidermal cyst of the middle ear and/or
Temporal bone with a squamous epithelial
lining.
- progressive growth with erosion of surrounding bone due to
pressure effects and osteoclast activation.
- progressive growth with erosion of surrounding bone due to
pressure effects and osteoclast activation.
- types
- congenital
- no infection
- no infection
- acquired
- with infection
- with infection
- histologically
- keratin
- stratified squamous
- fibrous/granulation tissue
- keratin
- congenital
- Is epidermal cyst of the middle ear and/or
Temporal bone with a squamous epithelial
lining.
- Aural polyps
- Benign proliferation of chronic inflammatory cells and
granulation tissue that is usually lined with benign reactive
epithelium.
- histologically
- Metaplastic squamous mucosa
- Metaplastic squamous mucosa
- histologically
- Benign proliferation of chronic inflammatory cells and
granulation tissue that is usually lined with benign reactive
epithelium.
- cavernous thrombosis
- lateral thrombosis
- meningitis
- abscess
- empyema
- Cholesteatoma
- causes
- psuedomonas
- moraxella
- h influenzae
- S. pneumoniae
- psuedomonas
- one of the causes of discharge
- other causes of discharge
- purulent
- mucoid
- blood stained
- serous
- purulent
- other causes of discharge
- symptoms
- pain
- hearing loss
- other causes of
hearing loss
- sensorineural
- ageing
- noise exposure
- ageing
- conductive
- wax
- scar
- wax
- sensorineural
- other causes of
hearing loss
- vertigo and dizziness
- other causes
- hypoglycemia
- vestibular disease
- anemia
- alcohol
- moiton sickness
- hypoglycemia
- other causes
- pain
- Physical Examination
- otoscopy
- tympanic membrane red and bulging
- tympanic membrane red and bulging
- auditory acuity
- Rinne
- Webber
- Rinne
- Other Investigations
- tympanogram
- Ct
- MRI
- Treatment
- amoxicillin
- cefedmir
- clindamycin
- clindamycin
- cefedmir
- mastoidectomy
- amoxicillin
- tympanogram
- otoscopy
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