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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
Q

Analog, extended wear HA that is deeply inserted into the ear canal

A

Lyric Hearing Aid

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26
Q

How long does a Lyric Hearing Aid last before it is discarded (battery dies)?

A

120 Days

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27
Q

What are some advantages to the Lyric Hearing Aid?

A 
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
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28
Q

What are some disadvantages of the Lyric Hearing Aid?

A

When battery dies, you must return to the dispenser
Cost- not cheap
Not compatible with FM devices
Power is limited

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29
Q

What is a new option for someone who cannot wear HAs because they have a sensitivity to plastics, exzema, etc

A

Middle Ear Implants

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30
Q

These use mechanical energy to stimulate the structures of the inner ear

A

Middle Ear Implants

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31
Q

Vibrant Soundbridge is one of these

A

Middle Ear Implant

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32
Q

Are Middle Ear Implants common?

A

No. Very few patients opt for these. It is a surgical procedure that carries risks and is invasive.

33
Q

What are some advantages to a Middle ear implant?

A

Open ear canal- great for patients with chronic drainage

No feedback

34
Q

What are some disadvantages of Middle Ear Implants?

A

Surgical Procedure
Cost ($15 k)
No insurance cover
HL can change outside the recommended range

35
Q

BAHA

A

Bone Anchored Hearing Aid

36
Q

This hearing aid might be used for a patient with microtia

A

BAHA

37
Q

T/F: A BAHA is used in patients with a SNHL.

A

False. It is for conductive losses. Inner ear must be within normal to mild.

38
Q

This type of hearing aid delivers sound through bone conduction

A

BAHA

39
Q

This type of hearing aid is used in cases of severe middle ear dysfunction.

A

BAHA

40
Q

A child must be how old to have a BAHA implanted?

A

5 years old

41
Q

About how much is a BAHA

A

$7500, insurance might not cover.

42
Q

Name the basic HA Components (4)

A

Microphone
Amplifier
Receiver/Speaker
Power Supply/Battery

43
Q

This HA component picks up audio signal and converts it into an electrical signal

A

Microphone

44
Q

2 types of microphones

A

Omnidirectional

Directional

45
Q

This HA component increases sound intensity and provides a ceiling.

A

Amplifier

46
Q

MPO

A

Maximum power output

47
Q

Three types of HA Amplifiers

A

Analog
Programmable Analog
Digital

48
Q

This HA component converts from the signal from the amplifier back to acoustic energy

A

Receiver

49
Q

This is the largest component in most hearing aids.

A

Receiver

50
Q

Think of this HA component as a mini loudspeaker

A

Receiver

51
Q

This is the most frequently damaged component of a HA

A

Receiver

52
Q

This HA component powers the device

A

Power Supply/Battery

53
Q

Some advantages to digital hearing aids

A 
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
Q

In a digital HA, where does the signal go before it reaches the amplifier?

A

Digital Signal Processor

55
Q

Which components of the HA can be programmed by a computer?

A

Microphone
Digital Signal Processor
Amplifier
Receiver

56
Q

Using two or more microphones to have varying sensitivity to sound, depending on where the sound is generated in relationship to the wearer.

A

Directional Microphones

57
Q

What is the purpose of Directional Microphones?

A

To reduce the interference of background noise

58
Q

This microphone pattern is most sensitive to sounds in front.

A

Cardioid Pattern Microphone

59
Q

This microphone is equally sensitive in all directions.

A

Omnidirectional

60
Q

This type of microphone would typically be used for a baby

A

Omnidirectional (you want a baby to hear behind him)

61
Q

When wearing a HA with a free-field cardioid pattern microphone, the wearer must do what?

A

Avoid standing with back against a wall, etc.

62
Q

This type of microphone would be preferred to listen to a music concert

A

Omnidirectional

63
Q

This type of directional microphone pattern is most sensitive to sounds in front and at 90 degrees to the listener.

A

Hypercardioid Pattern

64
Q

This type of directional microphone pattern is most sensitive to sound in front and in back of listener.

A

Bidirectional Cardioid Pattern

65
Q

_______________ limitations may dictate whether or not your HAs can have directional mics.

A

Space

66
Q

Wearing HAs on both the right and the left side

A

Binaural Amplification

67
Q

What are some benefits to Binaural Amplification?

A

Elimination of Head Shadow
Loudness Summation
Binaural Squelch
Localization

68
Q

A small coil of wire designed to pick up a magnetic signal

A

Tele-Coil (T-Coil)

69
Q

Amplified sound leaks out of the ear and is re-routed back into the hearing air microphone

A

Feedback

70
Q

When does feedback occur?

A

Hearing Aid out of ear but turned on
Close physical proximity to another surface
Earmold is loose or inserted wrong

71
Q

DAI

A

Direct Audio Input (a capability on some HAs)

72
Q

What different features might an individual control with the program button on a HA?

A

Mute
Switch to telecoil
Change Programs

73
Q

How does one use DAI with a HA?

A

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
Q

What is a big pitfall in the fitting of Hearing Aids?

A

Many dispensers do not use real ear measurements.

75
Q

An estimated ________ of hearing aids are misfit; amplified too much or too little.

A

2/3

76
Q

T/F: Hearing aid software can collect all the information necessary to fit a HA.

A

False. Verification and Validation must be performed with real ear measurements.

77
Q

T/F: Fittings that do not include Real Ear Measurements are incomplete.

A

True

78
Q

A measurement that shows how sound has been processed through the hearing aid in the ear canal.

A

Real Ear Measurements

Aural Rehabilitation (SHS 496) (6 decks)

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