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SPRING 13 Disorders of Hearing > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

Basic Components of Audiometer

A
  1. Transducer Selector
  2. Frequency Control
  3. Attenuator Control
  4. Stimulus Selector
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2
Q

Transducer Selector

A

Sets how signal is delivered to ear

Air Conduction

Bone Conduction

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3
Q

Frequency Control

A

Octaves (125, 250, 500, 1000, 2000, 4000, 8000 Hz)

Inter Octaves (750, 1500, 3000, 6000 Hz)

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4
Q

Attenuator Control

A

Sets intensity of signal

Air Conduction: -10 dB HL to 115 dB HL

Bone Conduction: -10 dB HL to 70 dB HL

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5
Q

Otoscopic Exam

A

Handheld or video otoscope for cerumen, foriegn objects, inflammation & TM perforation

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6
Q

Pure Tone Thresholds

A

level at which the patient detects the signal 50% of the time.

Estimates sensitivity of the auditory system over a range of frequencies

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7
Q

Air Conduction

A
  • Measured with headphones
  • Tests outer, middle, and inner ears and central pathways
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8
Q

Bone Conduction

A
  • Measured with bone oscillator placed on mastoid bone
  • Tests inner ear and central pathway
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9
Q

Hearing Level (dB HL)

A

Audiometric Zero

sound pressure level at threshold for an average normal hearing listener

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10
Q

Audiogram

A

graphic representation of the threshold of audibility used in clinical evaluations

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11
Q

>

AC or BC?

Right or Left?

Masked or Unmasked?

A

Bone

Left Ear

UNMASKED

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12
Q

<

AC or BC?

Right or Left?

Masked or Unmasked?

A

Bone

Right Ear

UNMASKED

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13
Q

]

AC or BC?

Right or Left?

Masked or Unmasked?

A

Bone

Left Ear

MASKED

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14
Q

[

AC or BC?

Right or Left?

Masked or Unmasked?

A

Bone

Right Ear

MASKED

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15
Q

Δ

AC or BC?

Right or Left?

Masked or Unmasked?

A

Air

Right Ear

MASKED

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16
Q

O

AC or BC?

Right or Left?

Masked or Unmasked?

A

Air

Right Ear

UNMASKED

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17
Q

X

AC or BC?

Right or Left?

Masked or Unmasked?

A

Air

Left Ear

UNMASKED

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18
Q

□

A

Air

Left Ear

MASKED

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19
Q

Air Conduction Procedure

A
  1. Measured with headphones
  2. Tests outer, middle, and inners & central pathways
  3. Start with better ear
  4. Modified method of limits threshold procedure (down 10, up 5)
  5. Frequency test order
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20
Q

Modified Method of Limits bracketeing procedure

A

Down 10, up 5

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21
Q

Bone Conduction Procedure

A
  1. Measure with bone oscillator placed on mastoid bone
  2. Tests inner ear and central pathway
  3. Modified Method of Limits

*start at 1000 Hz

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22
Q

Cross-Over

A

Sound presented to test ear but is crosses over to non test ear

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23
Q

Masking

A

Allows us to eliminate sound crossing over to NTE

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24
Q

Interaural Attenuation definition

A

(IA) reduces sound that crosses over produced by the head

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25
Q

Cross-hearing

A

Sound has crossed over and is perceived by NTE

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26
Q

Interaural Attenuation for supra aural headphones

Range: ____ - _____ dB HL

Min Value for AC _____

Min Value for BC _____

A

IA ranges from 40-70 dB HL

40 dB HL Air Conduction

0 dB HL Bone Conduction

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27
Q

IA for insert headphones

Range?: _____ - _____ dB HL

Min value?: _____ dB HL

A

Range 70-90 dB HL

Min value 60 dB HL

for insert headphones

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28
Q

Describe the type of hearing loss

A

Right unilateral SNHL

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29
Q

Describe the type of hearing loss

A

Right flat moderate conductive hearing loss

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30
Q

Describe the type of hearing loss

A

Notched and SNHL

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31
Q

Describe the type of hearing loss

A

Asymmetrical sloping SNHL

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32
Q

Describe the type of hearing loss

A

Bilateral symmetrical severe rising to mild SNHL

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33
Q

Initial Masking Level

Name the 3 components needed

A
  1. dB HL of the Air Conduction threshold of the NTE at the test frequency
  2. Minimal Effective Masking Correction +5 dB
  3. Safety Factor +10 dB
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34
Q

Occlusion Effect

A

An increase in the level of bone-conducted tone due to occluding the ear canal

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35
Q

_____________ would occur without the consideration of the occlusion effect

A

Undermaksing

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36
Q

IML AC =

A

HL AC (NTE) + MEMC + SF

HLAC + 5 dB + 10 dB

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37
Q

Occlusion Effect

250 Hz = _____

A

30 dB

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38
Q

Occlusion Effect

500 Hz = _____

A

20 dB

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39
Q

Occlusion Effect

500 Hz = _____

A

10 dB

40
Q

Occlusion Effect

2000 Hz = _____

A

0 dB

41
Q

Occlusion Effect

4000 Hz = _____

A

0 dB

42
Q

IML BC =

A

HL AC (NTE) + OE + MEMC + SF

43
Q

Degrees of Hearing Loss

Normal < ____ dB

A

Adult < 25 dB HL

Children < 15 dB HL

44
Q

Degrees of Hearing Loss

Mild ____ - _____ dB HL

A

Mild Hearing Loss

26 - 40 dB HL

45
Q

Degrees of Hearing Loss

Moderate = _____ - ______ dB HL

A

Moderate Hearing Loss

41 - 55 dB HL

46
Q

Degrees of Hearing Loss

Moderately Severe = ____ - ____ dB HL

A

Moderately Severe Hearing Loss

56 - 70 dB HL

47
Q

Degrees of Hearing Loss

Severe = ____ - _____ dB HL

A

Severe Hearing Loss

71 - 90 dB HL

48
Q

Degrees of Hearing Loss

Profound > _____ dB HL

A

Profound Hearing Loss > 90 dB HL

49
Q

Conductive Hearing Loss

A

Outer & Middle ear attenuates sound energy reaching cochlea

Audiogram will show BC better than/above AC

50
Q

Sensorineural Hearing Loss

A

Reduced sensitivity (threshold) due to a disorder in the cochlea (sensory), auditory nerve (neural) or both

Both BC & AC are worse than normal but equal in each ear

51
Q

For SNHL, Both BC & AC are ______ than normal but _____ in each ear

A

Both BC & AC are worse than normal but equal in each ear

52
Q

Unilateral

A

One ear

53
Q

Asymmetric

A

Different degree of hearing loss between ears

54
Q

Mixed Hearing Loss

A

Both SNHL & conductive

  • AC thresholds reflect both sensorineural & conductive components
  • BC thresholds reflect sensorineural component
55
Q

A. Conductive

B. Unilateral SNHL

C. Asymmetric SNHL

D. Mixed

A

C. Asymmetric SNHL

56
Q

A. Conductive

B. Unilateral SNHL

C. Asymmetric SNHL

D. Mixed

A

A. Conductive

57
Q

A. Conductive

B. Unilateral SNHL

C. Asymmetric SNHL

D. Mixed

A

B. Unilateral SNHL

58
Q

A. Conductive

B. Unilateral SNHL

C. Asymmetric SNHL

D. Mixed

A

D. Mixed

59
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

C. Rising

60
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

F. Sloping

61
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

A. Flat

62
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

D. Notched

63
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

B. Corner

64
Q

A. Relatively Flat

B. Corner

C. Rising

D. Notched

E. Precipitous

F. Sloping

A

E. Precipitous

65
Q
  1. Transducer Selector
  2. Frequency Control
  3. Attenuator Control
  4. Stimulus Selector
A

Basic Components of Audiometer

66
Q

Sets how signal is delivered to ear

Air Conduction

Bone Conduction

A

Transducer Selector

67
Q

Octaves (125, 250, 500, 1000, 2000, 4000, 8000 Hz)

Inter Octaves (750, 1500, 3000, 6000 Hz)

A

Frequency Control

68
Q

Sets intensity of signal

Air Conduction: -10 dB HL to 115 dB HL

Bone Conduction: -10 dB HL to 70 dB HL

A

Attenuator Control

69
Q

Handheld or video otoscope for cerumen, foriegn objects, inflammation & TM perforation

A

Otoscopic Exam

70
Q

level at which the patient detects the signal 50% of the time.

Estimates sensitivity of the auditory system over a range of frequencies

A

Pure Tone Thresholds

71
Q
  • Measured with headphones
  • Tests outer, middle, and inner ears and central pathways
A

Air Conduction

72
Q
  • Measured with bone oscillator placed on mastoid bone
  • Tests inner ear and central pathway
A

Bone Conduction

73
Q

Audiometric Zero

sound pressure level at threshold for an average normal hearing listener

A

Hearing Level (dB HL)

74
Q

graphic representation of the threshold of audibility used in clinical evaluations

A

Audiogram

75
Q
  1. Measured with headphones
  2. Tests outer, middle, and inners & central pathways
  3. Start with better ear
  4. Modified method of limits threshold procedure (down 10, up 5)
  5. Frequency test order
A

Air Conduction Procedure

76
Q

Down 10, up 5

A

Modified Method of Limits bracketeing procedure

77
Q
  1. Measure with bone oscillator placed on mastoid bone
  2. Tests inner ear and central pathway
  3. Modified Method of Limits

*start at 1000 Hz

A

Bone Conduction Procedure

78
Q

Sound presented to test ear but is crosses over to non test ear

A

Cross-Over

79
Q

Allows us to eliminate sound crossing over to NTE

A

Masking

80
Q

(IA) reduces sound that crosses over produced by the head

A

Interaural Attenuation definition

81
Q

Sound has crossed over and is perceived by NTE

A

Cross-hearing

82
Q
  1. dB HL of the Air Conduction threshold of the NTE at the test frequency
  2. Minimal Effective Masking Correction +5 dB
  3. Safety Factor +10 dB
A

Initial Masking Level

Name the 3 components needed

83
Q

An increase in the level of bone-conducted tone due to occluding the ear canal

A

Occlusion Effect

84
Q

Outer & Middle ear attenuates sound energy reaching cochlea

Audiogram will show BC better than/above AC

A

Conductive Hearing Loss

85
Q

Reduced sensitivity (threshold) due to a disorder in the cochlea (sensory), auditory nerve (neural) or both

Both BC & AC are worse than normal but equal in each ear

A

Sensorineural Hearing Loss

86
Q

One ear

A

Unilateral

87
Q

Different degree of hearing loss between ears

A

Asymmetric

88
Q

Both SNHL & conductive

  • AC thresholds reflect both sensorineural & conductive components
  • BC thresholds reflect sensorineural component
A

Mixed Hearing Loss

89
Q

Describe the Hearing Loss

A

Bilateral symmetrical conductive hearing loss

90
Q

Describe the hearing loss

A

mixed hearing loss

91
Q

Describe the hearing loss

A

Bilateral Symmetrical SNHL

92
Q

The degree of hearing loss is described relative to the ____________ conduction

A

Air Conduction

93
Q

An asymmetric hearing loss shows a __________ degree of hearing loss between ears

A

Different degree of hearing loss between ears

94
Q

When masking for bone conduction testing, the masking noise is presented to the _______ ear via ____________

A

non-test ear, air conduction

95
Q

Name all frequencies that require masking for bone conduction

A

250 Hz, 500 Hz, 3000 Hz, 4000 Hz require masking

SPRING 13 Disorders of Hearing (6 decks)

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