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CIC (completely-in-canal)
- smallest
- mild to moderate
- Pros: discret
- cons: 1 mic, small aid battery, repair issues
- no telecoil
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ITC (in-the-canal)
- mild to moderate
- pros: smaller in the ear product, fits 2 mics
- cons:dexterity issues
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ITE (in-the-ear)
mild to severe
- pros: 2 mics, better features
- cons: unattractive
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BTE (behind-the-ear)
severe-profound
- pro: fewer repairs, 2 mics, good for children whose ears will be growing
- cons: larger, cosmetic
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open fit BTEs
- more comfortable for patients
- mild to moderate
- does not occlude (block) the ear
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What considerations must be included in choosing a style?
- lifestyle
- costs
- degree
- physical status
- preference
- activities
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What are the main components of all hearing aids?
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What about the audiogram indicates whether someone is a good candidate or not?
speech discrimination
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Be familiar with how to troubleshoot a hearing aid
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What is the signal to noise ratio?
comparison b/w stimulus and noise
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Noise considerations
noise sources in rooms- ambient noise- 35 dB, poor arrangement, reverberation, size/distance
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How can you make the signal to noise ratio better?
decrease the distance
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Soundfield -pros and cons
benefits- reduced vocal strain, improves SNR (primary purpose)
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Soundfield-components of a SF system
- mic
- transmitter
- rec'r
- speaker
MR TS
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FM systems- What are they? Why do we use them?
uses signal to transmit, pass through walls
- -sends a signal straight to the hearing aid
- mic
- transmitter
- rec'r-attaches to HA
*provides no advantage to others.
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ALDs-list and describe
- Personal listening device (ear level)
- -mic/amp worn by user
- Amplified telephone
- TTY- teletype phone
- TAP-telecomm accessibility program
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ALDs- know some resources available for obtaining some ALDs
- CC- (closed captioning)
- TV ears
- Flashers/Shakers-light or shaking source when something is happening ie doorbell ring
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cochlear implants-components
- mic
- speech processor
- transmitter
MST
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cochlear implants-criteria for candidacy
SNHL
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cochlear implant-how an implant works
internal- reciever, electrode arroy
external- mic, speech processor, transmitter
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cochlear implant-manufacturers for implants
- cochlear cor
- advanced bionics
- med-el
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How does a BAHA work?
directly stimulate cochlea through bone conduction
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What kinds of hearing loss are BAHAs used for?
- conductive
- mixed
- single side deafness
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Components of a BAHA?
external: mic, amp, mechanical oscillator
internal: titanium abutment, titanium screw
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Candidacy criteria for BAHAs
at least 5 years
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HEAR NOW
- provides HAs for individuals who qualify based on income criteria
- Starkey Foundation
- $150 application fee
- (volunteer service)-Audiologist
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A cochlear implant is only appropriate for someone with a severe to profound ________ hearing loss.
sensorineural
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List the 3 parts of a cochlear implant's external device:
- microphone
- connecting cables
- speech processor
- transmitter
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Which of the following styles of hearing aids is usually the smallest?
CIC
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What is Dr. Tripp's definition of aural rehabilitation?
services provided to decrease the consequences of hearing loss.
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Which style of aid is most appropriate for children?
BTE
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List the 3 main components common to all hearing aids.
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Our text suggests 5 considerations that must be taken into account when choosing a hearing aid style for the patient. List 2 of them.
- lifestyle, job
- severity of hearing level
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Why do some hearing aids have multiple memories?
allow users to select strategies according to their listening environment.
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List 3 components that are common to all hearing aids:
microphone, amp, battery
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What is a telecoil?
- used to talk on the phone
- -uses the magnetic field produced by the phone
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feedback
continual growth of sound as sounds enter and re-enter an acoustical circuit
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What is a telecoil used for?
minimizes acoustic feedback problems/prevents the transmission of ambient room noise
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What is one advantage for choosing BTEs when fitting children?
If a child who uses BTE is still growing, the earmold can simply be recast when the ear outgrows the existing one. BTE have fewer problems with feedback.
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How are Middle Ear Implant Hearing Aids different from other hearing aids?
A middle ear implant converts the sound signal into a microphone vibration and transmits it directly to the ossicular chain.
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Briefly describe the heraing aid orientation process and audiologist must go through with a patient.
An audiologist must describe the function and controls with the patient. The audiologist must also describe maintenance information as well as practicing inserting and taking out hearing aid. The audiologist to the patient must demonstrate education of the hearing aid.
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5 considerations does our text suggest must be taken into account when choosing a hearing aid style for the patient?
degree of hearing loss, user preference, costs, lifestyle, physical status
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T or F 2 microphones helps someone better in noise.
T
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stethoset
listens to hearing aids
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BAHA
Bone Anchored Hearing Aid
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process of BAHA
titanium screw surgically place in the mastoid process
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How old you have to be have a BAHA?
5 years old
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Cochlear Implants is caused by
damage to hair cells in cochlea, stimulate Aud. nerve directly
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ossiointrigation
joining of the bone and titanium screw
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process of getting CI
- diagnosis
- hearing aid trial
- surgery
- activation- 6 wks
- AR program
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Deaf culture
- CIs-bad
- deafness is not a handicap
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inverse square law
double distance and subtract 6
- 5 ft and 55 dB
- 10 ft and 49 dB
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What is the primary purpose of Sound Field System?
- benefits:
- reduced vocal strain
- *improves SNR
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FM systems
can pass through walls
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infrared
- tv-remote
- 'line of sight"
- problems w/ light interference
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Personal FM system
*provides no advantage to other
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