Ear Disease Flashcards
What is normal hearing threshold level
-10 to 20
What do the X’s on the PTA indicate?
through air
What do the brakcet on the PTA indicate?
bone conduction
What does a tympanogram measure?
the movement of the ear drum in response to varying pressure
What is the diagnositc test for ear disease?
otoendoscopy
What are the 6 D symptoms for ear disease?
deafness; discomfort; discharge; dizziness; din din; defective movement of face
What are the types of deafness?
conductive; sensorineural; mixed; central
What nerves can be involved in earache?
V; VII; IX; X; C2,C3
What is the most common nerve for causing earche?
IX- referred pain from a sore throat or toothache
What conditions can cause otorrhoea?
AOM; COM; CSF leak
What is chronic otitis media?
perforated ear drum that hasnt healed and has continued discharfe
What are the 2 categroies of dizziness?
central and peripheral
What is important in determining with periphaerla dizziness?
if there is associated hearing loss
What is important to remember with tinnitus?
1% of those affected are a suicide risk
What is tinnitus?
hearing sounds from inside your body rather than outside
What is the main treatment for otitis externa?
cleaning
What may also by given for otitis externa?
clotramizole or gentamicin drops
What is seen on exam with AOM?
red ear drum
What is OME?
presence of fluid behind an intact ear drum without infection
What causes OME?
dysfunction of the eustachian tubes
What is the chief cause of hearing loss in younr childre?
OME
What cancer can cause OME?
nasopharyngeal carcinoma
When should nasopharyngeal carcinoma be suspected?
unilateral OME in a chinese person
What is seen on exam of OME?
fluid level or bubbles behind the drum
What should be excluded with chronic OME?
cholesteatoma
Why can chronic otitis media become cholesteatoma?
if secretions cannot drain, differentiation into squamous epithelium occurs
What is another name for cholesteatoma?
active swuaous chonric otitis media
What is the peak age of cholesteatoma?
5-15years
What are the symptoms of cholesteatoma?
foul discharge +/- deafness; headache; pain; facial paralysis; vertigo
What is the treatment for cholesteatoma?
mastoid surgery
