Lecture 5.1 Flashcards
What are the parts of a hearing aid orientation session?
hearing aid parts orientation
battery
care and maintenance
adjustment/listening
follow-up
How do hearing aid batteries differ?
different sizes
fit different types
have different lifespans
rechargeable vs. disposable
How are hearing aids cleaned?
avoid moisture, extreme temperatures, trauma/dropping
clean them using various aids (tissues, tools, air blower
How can smart phones assist with selecting programs on hearing aids?
apps control hearing aid
can manually select specific program or select automatic which will sample acoustics of the area and select appropriate program
How do we counsel on performance expectations for a new hearing aid user?
realistic expectations
- improved but not perfect communication
- more benefit in quiet than in noise
- some degree of visibility
adjustment period/acclimatization
- usually use digital processor to self-adjust over time - start at lower setting for newer users and automatically increase gain over time for a more ideal fit
usually 1, 2, and 3 month follow ups
How do we troubleshoot feedback?
check if HA is in the ear properly
- accurate ear mold impression
- proper orientation of receiver in canal
damage/cleaning issues
- no cerumen in canal or on receiver
- no cracks in tubing
- appropriate vent size
proper audiological fitting
- ex. too loud
How do we troubleshoot no sound?
dead battery?
ear mold plugged with wax or water?
How do we trouble shoot intermittently functioning hearing aid?
tubing collapse? may need to replace tubing
What is the SLP role in a hearing aid check?
check is HA is working
check if HA is worn properly
check quality of HA
change batteries
remove wax
What is a cochlear implant?
surgically implanted medical device that bypasses the damaged part of inner ear to electrically stimulate remaining neural fibers of auditory nerve
electrodes lay along length of cochlea, can access sound when no hair cells present
vs. hearing aids that amplify sound and rely on integrity of hair cells in inner ear
- don’t work for severe-profound loss that don’t have enough working hair cells
What are the characteristics of adults who are candidates for CI?
18+
moderate to profound bilateral sensorineural hearing loss
limited benefit from amplification
- <50% sentence recognition in ear to be implanted and <60% in opposite ear (or binaurally)
What are the characteristics of children who are candidates for CI?
12-23 months
- profound bilateral sensorineural hearing loss
- limited benefit from binaural amplification
2-17 years
- severe to profound bilateral sensorineural hearing loss
- limited benefit from binaural amplification
- MLNT or LNT scores <30%
What are the components of a CI?
external device
- sound processor, microphone, coil with magnet
- sits behind ear, picks up sound and analyzes, converts into electrical signal that is sent to the internal device located under the skin
internal device
- electrode array
How does a CI work?
sound processor captures sound, converts it to digital code, and sends through coil to implant
implant converts to electrical impulse and sends along electrode array in cochlea
electrodes stimulate auditory nerve, sends impulses to brain to be interpreted as sound
Who is amongst the team involved in CI provision/care?
ENT
CI surgeon
audiologist
SLP
educator
child psychologist
social worker
What are some of the SLP roles in CI?
pre-CI:
- speech/language/communication
- auditory and functional listening skills
- literacy
- metacognition and executive functions
post-CI:
- modes/approaches/strategies for communication
- QOL/self-assessment tools
- education
- prognosis for speech/language/communication
- treatment options
What is the process from identification of HL to CI?
diagnosis/identification
hearing aid trial
audiologic candidacy evaluation
medical candidacy evaluation
other evaluation (SLP, psych, etc.)
surgery
initial stimulation (few weeks post-op)
ongoing CI programming
verification of performance
What are some common features of a CI?
power switch
battery
program control
volume control
Where does aural rehab come into CI process?
after implantation
learn how to listen, discriminate, and understand range of sounds
individualized treatment plans
What are some factors impacting performance of CI?
duration of deafness
age of onset of deafness
age of implantation
duration of CI use
other (electrode placement, aural rehab, etc.)
What are ALDs?
assistive listening devices
don’t replace hearing aids - improve ability to hear in challenging listening situations
amplified telephones, notification systems, TV streamers, personal amplifiers
What are amplified telephones?
help those who struggle to hear when talking on phone
extra loud ringer volume and tone control to help hear conversations more clearly
for mild to severe loss, work best with use of hearing aids
What are some notification systems?
amplified alarm clocks - extra loud alarm, pillow shaker
alert systems - flash a light when things like alarm clock, door bell, smoke detector, or telephone is going off
What is a pocket talker?
microphone attached to headphones
speaker holds microphone and listener wears headphones
suitable for moderate-severe hearing loss with or without hearing aid
What is a remote microphone?
speaker wears a microphone and speech is sent directly to hearing aid
allows hearing of speaker louder than any background noise
- overcomes effect of talker distance, ambient noise, reverberation
wireless, direct audio input
What is an induction loop system?
loop systems in churches, auditoriums, or theatres that send sound from a microphone directly to hearing aids
telecoil pre-installed in hearing aids/CIs connect to loop system
What is an infrared system?
uses light waves to send sounds across a room
system changes sounds into light and sends them to receiver, then receiver turns light waves back into sounds
receiver can be worn alone or within hearing aid
used in larger places like theatres, can also be used at home with TV
- allow you to hear TV at louder volume while others hear at a comfortable volume for them
What is an FM system?
frequency modulation
wireless transmission method used to transmit sound
main advantage: resilient to noise and interference, helps preserve quality and clarity of sound transmitted
traditionally consists of radio transmitter which captures sound via microphone or direct connection to sound source and transmits to radio receiver
What are some issues with loop systems compare to FM/IR?
more expensive and inconvenient
requires wires to be installed
potential interference/reduced security
