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Aural Rehabilitation (SHS 496) > Hearing Aids > Flashcards

Hearing Aids Flashcards

1
Q

What are the 3 Types of Aural Rehabilitation Technologies?

A

Primary Amplification
Hearing Assistive Technology
Other Assistive Technology

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2
Q

What are the 2 types of primary amplification?

A

Hearing Aids

Cochlear Implant

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3
Q

What are the 4 goals for a patient with hearing aids?

A

Make Speech Audible
Make/Keep Speech Comfortable
Deliver Undistorted Sound
Provide a Range of Loudness

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4
Q

What type of technology makes “gain” modulation possible?

A

Digital Hearing Aids

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5
Q

BTE

A

Behind-the-Ear Hearing Aid

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6
Q

The part of the hearing aid that goes inside the ear

A

earmold

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7
Q

How often does a HA battery have to be replaced?

A

Every 5-7 Days

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8
Q

Name the 6 main parts to a BTE, not including the earmold.

A 
Receiver
Microphone(s)
Amplifier 
Battery/Battery Door 
Program Button 
Volume Control
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9
Q

What are some of the advantages of BTEs?

A 
Include Telecoils 
House good power 
Flexibility
Earmolds Easily Remade
Less Problems with Feedback
Sturdy
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10
Q

Bluetooth is currently being used with Hearing Aids as a ________________.

A

“Gateway”

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11
Q

A Hearing Aid without an ear mold is referred to as ____________________

A

“open fit”

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12
Q

A BTE that cannot be seen

A

Micro BTE

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13
Q

RITE

A

Receiver in the Canal

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14
Q

What is the biggest disadvantage of Micro BTEs and RITE designs?

A

Smaller design means not all advanced features are available.

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15
Q

When making an earmold, what must be done prior to injecting silicone mold into the ear canal?

A

“Otoblocks” must be inserted (attached to long string for removal) to prevent silicone from coming into contact with TM.

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16
Q

What are some advantages to All-in-the Ear Hearing Aids?

A

Reduced Wind Noise
Assists Localization
Less Affected by Sweating

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17
Q

What are some disadvantages to All-in-the Ear HAs?

A

Size of Ear can dictate size of HA
May be limited in power
May not be compatible with FM systems

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18
Q

ITC

A

In-the-Canal Hearing Aid

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19
Q

Red printing on the label of an ITC HA indicates what?

A

Right Ear

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20
Q

What is the only advantage to an ITC HA?

A

Cosmetically Appealing

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21
Q

What are some of the disadvantages of an ITC HA?

A 
Wax in sound port
Not appropriate for more severe HL
Difficult to handle 
Tiny Battery requires frequent changing
No T-coil or other advanced options
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22
Q

What is the main complaint with CIC hearing aids?

A

CIC: Completely in-the-canal make wearers feel “plugged up.” Sound ports get occluded.

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23
Q

What are some advantages to CIC hearing aids?

A 
Mild to Mod HL can be successful
Inconspicuous
Microphone location reduced wind noise
can use headphones over CIC 
Improved localization
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24
Q

What are some disadvantages to CIC hearing aids?

A 
Remote control needed 
No T Coil 
Cannot be paired with FM systems 
Plugged up feeling 
High maintenance (ear wax) 
FB can happen if fit is wrong
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25
Analog, extended wear HA that is deeply inserted into the ear canal
Lyric Hearing Aid
26
How long does a Lyric Hearing Aid last before it is discarded (battery dies)?
120 Days
27
What are some advantages to the Lyric Hearing Aid?
``` Improved directionality and Localization Reduced sense of occlusion and feedback High frequency gain Reduced wind noise Less distortion Don't need T coil comfort Easy to maintain ```
28
What are some disadvantages of the Lyric Hearing Aid?
When battery dies, you must return to the dispenser Cost- not cheap Not compatible with FM devices Power is limited
29
What is a new option for someone who cannot wear HAs because they have a sensitivity to plastics, exzema, etc
Middle Ear Implants
30
These use mechanical energy to stimulate the structures of the inner ear
Middle Ear Implants
31
Vibrant Soundbridge is one of these
Middle Ear Implant
32
Are Middle Ear Implants common?
No. Very few patients opt for these. It is a surgical procedure that carries risks and is invasive.
33
What are some advantages to a Middle ear implant?
Open ear canal- great for patients with chronic drainage | No feedback
34
What are some disadvantages of Middle Ear Implants?
Surgical Procedure Cost ($15 k) No insurance cover HL can change outside the recommended range
35
BAHA
Bone Anchored Hearing Aid
36
This hearing aid might be used for a patient with microtia
BAHA
37
T/F: A BAHA is used in patients with a SNHL.
False. It is for conductive losses. Inner ear must be within normal to mild.
38
This type of hearing aid delivers sound through bone conduction
BAHA
39
This type of hearing aid is used in cases of severe middle ear dysfunction.
BAHA
40
A child must be how old to have a BAHA implanted?
5 years old
41
About how much is a BAHA
$7500, insurance might not cover.
42
Name the basic HA Components (4)
Microphone Amplifier Receiver/Speaker Power Supply/Battery
43
This HA component picks up audio signal and converts it into an electrical signal
Microphone
44
2 types of microphones
Omnidirectional | Directional
45
This HA component increases sound intensity and provides a ceiling.
Amplifier
46
MPO
Maximum power output
47
Three types of HA Amplifiers
Analog Programmable Analog Digital
48
This HA component converts from the signal from the amplifier back to acoustic energy
Receiver
49
This is the largest component in most hearing aids.
Receiver
50
Think of this HA component as a mini loudspeaker
Receiver
51
This is the most frequently damaged component of a HA
Receiver
52
This HA component powers the device
Power Supply/Battery
53
Some advantages to digital hearing aids
``` Precise programming More parameters More complex signal processing Better sound quality Higher Fidelity Less Distortion Good Loudness Comfort Better Control of Feedback Quieter Circuits ```
54
In a digital HA, where does the signal go before it reaches the amplifier?
Digital Signal Processor
55
Which components of the HA can be programmed by a computer?
Microphone Digital Signal Processor Amplifier Receiver
56
Using two or more microphones to have varying sensitivity to sound, depending on where the sound is generated in relationship to the wearer.
Directional Microphones
57
What is the purpose of Directional Microphones?
To reduce the interference of background noise
58
This microphone pattern is most sensitive to sounds in front.
Cardioid Pattern Microphone
59
This microphone is equally sensitive in all directions.
Omnidirectional
60
This type of microphone would typically be used for a baby
Omnidirectional (you want a baby to hear behind him)
61
When wearing a HA with a free-field cardioid pattern microphone, the wearer must do what?
Avoid standing with back against a wall, etc.
62
This type of microphone would be preferred to listen to a music concert
Omnidirectional
63
This type of directional microphone pattern is most sensitive to sounds in front and at 90 degrees to the listener.
Hypercardioid Pattern
64
This type of directional microphone pattern is most sensitive to sound in front and in back of listener.
Bidirectional Cardioid Pattern
65
_______________ limitations may dictate whether or not your HAs can have directional mics.
Space
66
Wearing HAs on both the right and the left side
Binaural Amplification
67
What are some benefits to Binaural Amplification?
Elimination of Head Shadow Loudness Summation Binaural Squelch Localization
68
A small coil of wire designed to pick up a magnetic signal
Tele-Coil (T-Coil)
69
Amplified sound leaks out of the ear and is re-routed back into the hearing air microphone
Feedback
70
When does feedback occur?
Hearing Aid out of ear but turned on Close physical proximity to another surface Earmold is loose or inserted wrong
71
DAI
Direct Audio Input (a capability on some HAs)
72
What different features might an individual control with the program button on a HA?
Mute Switch to telecoil Change Programs
73
How does one use DAI with a HA?
DAI (Direct Audio Input) cable is plugged in directly to a BTE HA. This cable is connected to a receiver that receives transmission from a bluetooth gateway. HA T-coil used in this application.
74
What is a big pitfall in the fitting of Hearing Aids?
Many dispensers do not use real ear measurements.
75
An estimated ________ of hearing aids are misfit; amplified too much or too little.
2/3
76
T/F: Hearing aid software can collect all the information necessary to fit a HA.
False. Verification and Validation must be performed with real ear measurements.
77
T/F: Fittings that do not include Real Ear Measurements are incomplete.
True
78
A measurement that shows how sound has been processed through the hearing aid in the ear canal.
Real Ear Measurements

Aural Rehabilitation (SHS 496) (6 decks)

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