CSD 431 EXAM 1 QUESTIONS AND
ANSWERS
progressive v sudden HL - Answer-hearing loss worsens over time/ loss happened
quickly
fluctuating v stable - Answer-hearing loss changes over time/ hearing loss stays the
same
modern hearing aid styles - Answer-BTE
RIC
ITE & ITC
CIC & IIC
BTE - Answer-all components worn behind the ear
earmold in ear canal
hollow tube onnection
RIC - Answer-miniature loudspeaker/receiver worn in ear
other components worn behind ear
thin wire
ITE &ITC - Answer-all components worn in outer ear/ear canale
ITC smaller
CIC & IIC - Answer-worn more deeply inside ear canal
IIC smaller
how hearing aid works - Answer-microphone
processor/amplifier
receiver
microphone - Answer-picks up sound and converts to electrical signal
processors/amplifier - Answer-converts signal into digital code, amplifies back, converts
digital code back to electrical signal
receiver - Answer-converts electrical signal back into sound
verification - Answer-microphone placed in ear to test output for soft, medium, loud
sounds
audiologists checks real-ear performance, adjusts settings
validation - Answer-after 2-3 weeks, patient return to resolve concerns
, adults: self-assesment measures
children: parent-report measures
ALL: patient/patient interview (wear-time, comfort, overall satisfaction)
hearing aid costs - Answer-$1,000-$6,000 each depending on technology
on-ear processor - Answer-standard
body-worn processor - Answer-older style
easy plug-in for audio accessories
off-ear processor - Answer-less weight for small/baby ears
cosmetic for adults
cochlear implant/hearing aid hybrid - Answer-high frequency benefit via cochlear
implants technology
& low frequency benefit via hearing aid tech in one on-ear processor
how cochlear implant works - Answer-1. Sound is picked up by the microphone.
2. The signal is then coded into a pattern of electrical impulses.
3.These impulses are carried up to the coil & then are transmitted across the skin to the
internal receiver.
4. The receiver then sends these pulses down to the frequency-specific electrodes in
the cochlea.
5. The auditory nerve fibers in the cochlea pick up these pulses and carry them to the
brain, which recognizes these signals as sound.
candidacy for implants - Answer-adults (18+)
children (2-17)
children (12-24 mths)
adults 18 + - Answer-moderate to profound sensorineural hearing loss in both ears
limited benefit from amplification
children (2-17) - Answer-severe to profound sensorineural HL in both ears
limited benefit from binaural amp
children (12-24 mths) - Answer-profound sensorineural hearing loss in both ears
limited benefit from binaural amp
implantation process - Answer-1. Comprehensive audiological evaluation
2. Surgical implantation of internal components under the skin and behind the pinna,
cochlea
3. External components are fit
mapping
4. Comprehensive aural rehab program to enhance listening skills
ANSWERS
progressive v sudden HL - Answer-hearing loss worsens over time/ loss happened
quickly
fluctuating v stable - Answer-hearing loss changes over time/ hearing loss stays the
same
modern hearing aid styles - Answer-BTE
RIC
ITE & ITC
CIC & IIC
BTE - Answer-all components worn behind the ear
earmold in ear canal
hollow tube onnection
RIC - Answer-miniature loudspeaker/receiver worn in ear
other components worn behind ear
thin wire
ITE &ITC - Answer-all components worn in outer ear/ear canale
ITC smaller
CIC & IIC - Answer-worn more deeply inside ear canal
IIC smaller
how hearing aid works - Answer-microphone
processor/amplifier
receiver
microphone - Answer-picks up sound and converts to electrical signal
processors/amplifier - Answer-converts signal into digital code, amplifies back, converts
digital code back to electrical signal
receiver - Answer-converts electrical signal back into sound
verification - Answer-microphone placed in ear to test output for soft, medium, loud
sounds
audiologists checks real-ear performance, adjusts settings
validation - Answer-after 2-3 weeks, patient return to resolve concerns
, adults: self-assesment measures
children: parent-report measures
ALL: patient/patient interview (wear-time, comfort, overall satisfaction)
hearing aid costs - Answer-$1,000-$6,000 each depending on technology
on-ear processor - Answer-standard
body-worn processor - Answer-older style
easy plug-in for audio accessories
off-ear processor - Answer-less weight for small/baby ears
cosmetic for adults
cochlear implant/hearing aid hybrid - Answer-high frequency benefit via cochlear
implants technology
& low frequency benefit via hearing aid tech in one on-ear processor
how cochlear implant works - Answer-1. Sound is picked up by the microphone.
2. The signal is then coded into a pattern of electrical impulses.
3.These impulses are carried up to the coil & then are transmitted across the skin to the
internal receiver.
4. The receiver then sends these pulses down to the frequency-specific electrodes in
the cochlea.
5. The auditory nerve fibers in the cochlea pick up these pulses and carry them to the
brain, which recognizes these signals as sound.
candidacy for implants - Answer-adults (18+)
children (2-17)
children (12-24 mths)
adults 18 + - Answer-moderate to profound sensorineural hearing loss in both ears
limited benefit from amplification
children (2-17) - Answer-severe to profound sensorineural HL in both ears
limited benefit from binaural amp
children (12-24 mths) - Answer-profound sensorineural hearing loss in both ears
limited benefit from binaural amp
implantation process - Answer-1. Comprehensive audiological evaluation
2. Surgical implantation of internal components under the skin and behind the pinna,
cochlea
3. External components are fit
mapping
4. Comprehensive aural rehab program to enhance listening skills
