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Otoscopy, tympanometry & acoustic reflex
audiology
18
Science
Graduate
12/11/2010

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Cards

Term
WHat does Otoscopy assess?
Definition
External ear canal and tympanic membrane
Term
Otoscopy is made up of what parts?
Definition
light source, magnifier, speculum.
Term
What are the normal landmarks of Otoscopy?
Definition
cone of light, umbo, manubrium of malleus and typically semi-transparent.
Term
What would you see in otoscope if patient had conductive hearing loss?
Definition
impacted cerumen, inflammation of auditory canal, drainage, growth, foreign bodies, fungus, retraction.
Term
What would you see in otoscope if patient had sensiorneural hearing loss?
Definition
normal
Term
What would you see in otoscope if patient had retrocochlear hearing loss?
Definition
normal otoscopy
Term
Tympanometry is the ____________ measure of the ___________
Definition
objective, middle ear function
Term
in tympanometry, a ______ hz probe tone is introduced into the ear canal at a ________ decibel level.
Definition
226, steady
Term
t/f in tympanometry, measurement of sound pressure level in ear canal are taken as pressure changes and are plotted on a graph called tympanogram.
Definition
true
Term
imedance
Definition
opposition to the flow of energy
Term
ease which energy flows through a system.
Definition
admittance
Term
What are the four basic components of the typanometry?
Definition
1. probe with loud speaker
2. microphone to monitor the sound pressure
3. air pump to introduce air pressure
4. manometer to monitor air pressure
Term
In tympanometry, at ____________ , TM and middle ear stiffen reflecting much of acoustic energy back into ear canal.
Definition
pressure extremes (-/+200)
Term
In tympanometry, as pressure gets closer to ________more acoustic stimuli is admitted through the TM to the middle ear.
Definition
0, atmospheric pressure
Term
the pressure at which the peak of the tympanogram occurs
Definition
peak pressure
Term
measurement of maximum energy flow(sound not reflected back) through the middle ear
Definition
Peak amplitude
Term
estimate of volume between the probe tip and the TM
Definition
ear canal volume
Term
shallow peak
Definition
A s
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