-
objectives to hearing testing
- assist in medical diagnosis
- assist in aural rehabilitation - real job
- screening a population
- monitor
-
screening a population is used to
identify people at risk for hearing loss so they can have further testing done
-
monitor is used to
- monitor the employees of large companies like Ford's to keep the workers from becoming communicationally challenged \
- their hearing will be hurt but should not be destroyed
-
standard classification of hearing loss
- conductive - sound not getting there
- sensory (sensory transduction) & neural (CN VIII) = sensorineural
- central (cochlear and beyond, center of ear)
-
other classification terms
- peripheral - vestibular balance
- retrocochlear - "retro" - after cochlea, CN and up to brain
-
'retro' jargon
- an VIII nerve problem / tumor
- can cause death
- physician does an MRI
-
early testing procedures
- watch tick
- coin click
- conversational voice
- whisper test
-
coin click test
- drop a coin on the table and ask how it sounds
- metalic means that they can hear high frequencies
- low thud means they can hear low frequencies
-
conversation voice
- very dumb
- like testing vision (use 20/20)
- created by the government
-
whisper test
- still crappy
- change from the conversational voice test
-
tuning fork tests...
qualify or tell us the kind of hearing loss but do not quantify or tell us how much hearing is lost
-
tuning forks play the note
- C above middle C
- 1,000 Hz
-
types of tuning fork tests
- Rinne
- Weber
- Bing
- The Weber-Bing Procedure
-
Rinne test
- unilateral
- hit fork, when sound disappears put it on masta - does is reappear?
- if they dont hear it longer away from head, they have sensorineural loss
- if they hear it longer on masta, they have conductive loss
-
Weber test
- unilateral
- used for SSD
- hit fork, put on forehead
- if they hear it in the good ear, they have sensorineural loss in the bad ear
- if they hear it in the bad ear, they have conductive loss in the bad ear
|
|
