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Graduate School > Hearing Aids 1 > Flashcards

Hearing Aids 1 Flashcards

1
Q

List the types of HA’s

A
  1. IIC
  2. CIC
  3. ITE
  4. ITC
  5. BTEs
  6. RITA
    3, RIC
  7. OTC/PSAPs
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2
Q

List the components of a HA and what each one does.

A
  1. Receiver: Delivers sound
  2. Amplifier: Changes signal to desired level and form
  3. Microphonee: Picks up sound
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3
Q

Define the Occlusion Effect.

A

When LF sounds get trapped in the back of our throats, but HF sounds move to our mandible via BC, but turn into AC due to vibrations of low frequency sound of the cartilaginous portion of the ear canal. Since a hearing aid is present, LF sounds cannot naturally escape, so the trapped sound is reflected back to our eardrum and transmitted to our cochlea via AC. Thus enhancing the sound the person hears.

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4
Q

What is the primary function of the electronic components and sound processing of HA?

A

To work together to increase the amplitude in a frequency-specific manner.

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5
Q

Occlusion effect increases…

A

Low frequency sounds of the occluded ear by 20-30dB

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6
Q

How is sound routed for BTE?

A

From the receiver to the earhook

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7
Q

List advantages of BTE

A
  1. It’s design, earmold, tubing, and earhook can all be used to modify frequency response of a signal
  2. Microphone port is near TM and the HA is positioned on top of the pinna so this allows for directional cues
  3. Larger sizes allow for various technologies
  4. Great for children still growing
  5. Improved durability due to separation of electronic components
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8
Q

What are the components of RIC

A
  1. Receiver is in the canal

2. Thin wire is attached to external receiver

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9
Q

Advantage of RIC

A
  1. Reduces feedback
  2. Less occlusion effect
  3. Allows for larger fitting
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10
Q

List disadvantages of RIC

A
  1. Receiver gets plugged with cerumen
  2. Smaller, harder for patients to handle
  3. Limited amount of controls
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11
Q

Who would be a good candidate for CROS HAs?

A

Someone with no useable hearing in one ear and normal or minimal hearing in the other ear.

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12
Q

What’s the goal for CROS?

A

The patient to have two-sided hearing when true bilateral hearing is not possible

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13
Q

What’s the advantage of CROS

A

User can use their good ear to hear signals from the impaired side that was attenuated by the head shadow effect

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14
Q

What is the goal of BiCROS?

A

The HA picks up sound from the transmitter and plays it in the better ear

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15
Q

When would a BiCROS be recommended for a patient?

A

When they have a HL in their better ear

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16
Q

What does BiCROS & CROS help improve?

A

Hearing & SNR due to head shadow effect

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17
Q

List the battery size & colors for HAs.

A
  1. 312 -Brown
  2. 13 -Orange
  3. 10 -Yellow
  4. 675 -Blue
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18
Q

When would you use acrylic EM?

A
  1. Those with insertion problems

2. Those with soft ears

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19
Q

What are the pros for vinyl EM?

A
  1. Comfortable

2. Easier to insert

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20
Q

When would you use silicone EM?

A
  1. For children

2. Severe - Profound HL

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21
Q

List the type of EMs & their range in softness.

A
  1. Silicone - Soft
  2. Vinyl - Middle
  3. Acrylic - Hardesr
22
Q

List pros for acrylic

A
  1. Easy to modify

2. Durable

23
Q

What do Silicone & Vinyl have in common regarding cons?

A

They are both hard to modify

24
Q

List one con for Silicone & Vinyl

A

Silicone: Harder to insert

Vinyl: Less durable

25
Q

What is the benefit of a custom HAs?

A

Improves directionality due to Pinna Effect

26
Q

List benefit of BTE/RIC.

A
  1. Multiple coupling options
  2. Wide fitting range
  3. Rechargeable
  4. Wireless compatibility
27
Q

When would you consider BAHA

A
  1. CHL

2. SSD

28
Q

When would you consider a CROS v BiCROS?

A

CROS: No hearing in one ear and close to perfect in the other

BiCROS: No hearing in one ear and moderate HL in the other

29
Q

What are the EM styles?

A
  1. Skeleton
  2. Full Shell
  3. Half Shell
  4. Semi-Skeleton
  5. Canal
  6. Canal Lock
  7. CRos
  8. Hollow Sleeve
  9. Solid Sleeve
  10. Shell
30
Q

What is the purpose of EM?

A
  1. Retain HA on the pinna
  2. Provide good acoustic seal
  3. Acoustically modify the signal coming from the HA
31
Q

Which freq does venting affect?

A

Low

32
Q

What are the types of Acoustic Venting Options?

A
  1. Parallel
  2. Side Branch
  3. Trough
  4. SAV
33
Q

What is the goal of venting?

A

Allow LFs sound to leak out of the ear

34
Q

When would we consider a Side Branch vent option?

A

To cut HFs

35
Q

When would we consider Trough vent option?

A

For an open fitting

36
Q

What are the venting options for RIC & BTEs?

A
  1. Closed Domes
  2. Open Domes
  3. Power Domes
37
Q

What does open domes aid in?

A
  1. Allows for some natural noise to enter EC

2. Allows some LFs to dissipate

38
Q

What does closed domes aid in?

A
  1. Block more of the ear canal

2. Amplify LFs

39
Q

What type of HL does open domes benefit?

A

Mild-Moderate HL

40
Q

What type of HL does closed domes benefit?

A

Moderate HL

41
Q

What type of HL does power domes benefit?

A

Severe-Profound HL

42
Q

What does power domes aid in?

A
  1. Full seal around ear canal

2. Maximum sound amplification with minimal sound dissipation

43
Q

What is the goal of dampers?

A

To smooth out the peaks in frequency response of the HA that leads to acoustic FB or poor sound quality

44
Q

When would we typically use dampers?

A

For BTEs with earhook

45
Q

Dampers focuses on which frequenies?

A

Mid

46
Q

Horn effect focuses on which frequency?

A

HF

47
Q

What does a horn effect do?

A

Change the shape of the sound bore to either increase or decrease HF

48
Q

A Horn would …

A

Increase HF

49
Q

A Reverse Horn would…

A

Decrease HF

50
Q

What are the consequences of untreated HL?

A
  1. Irritability, negativism, and anger
  2. Fatigue, tension, stress, depression
  3. Avoidance/Withdrawal from social situations
51
Q

What is TU’s protocal for HAE?

A
  1. MCLs
  2. UCLs
  3. QuickSIN
  4. Questionnaire/Scale

Graduate School (14 decks)

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