Exam 2 Flashcards
(95 cards)
1
Q
Basic Components of Audiometer
A
- Transducer Selector
- Frequency Control
- Attenuator Control
- Stimulus Selector
2
Q
Transducer Selector
A
Sets how signal is delivered to ear
Air Conduction
Bone Conduction
3
Q
Frequency Control
A
Octaves (125, 250, 500, 1000, 2000, 4000, 8000 Hz)
Inter Octaves (750, 1500, 3000, 6000 Hz)
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
5
Q
Otoscopic Exam
A
Handheld or video otoscope for cerumen, foriegn objects, inflammation & TM perforation
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
7
Q
Air Conduction
A
- Measured with headphones
- Tests outer, middle, and inner ears and central pathways
8
Q
Bone Conduction
A
- Measured with bone oscillator placed on mastoid bone
- Tests inner ear and central pathway
9
Q
Hearing Level (dB HL)
A
Audiometric Zero
sound pressure level at threshold for an average normal hearing listener
10
Q
Audiogram
A
graphic representation of the threshold of audibility used in clinical evaluations
11
Q
>
AC or BC?
Right or Left?
Masked or Unmasked?
A
Bone
Left Ear
UNMASKED
12
Q
<
AC or BC?
Right or Left?
Masked or Unmasked?
A
Bone
Right Ear
UNMASKED
13
Q
]
AC or BC?
Right or Left?
Masked or Unmasked?
A
Bone
Left Ear
MASKED
14
Q
[
AC or BC?
Right or Left?
Masked or Unmasked?
A
Bone
Right Ear
MASKED
15
Q
Δ
AC or BC?
Right or Left?
Masked or Unmasked?
A
Air
Right Ear
MASKED
16
Q
O
AC or BC?
Right or Left?
Masked or Unmasked?
A
Air
Right Ear
UNMASKED
17
Q
X
AC or BC?
Right or Left?
Masked or Unmasked?
A
Air
Left Ear
UNMASKED
18
Q
□
A
Air
Left Ear
MASKED
19
Q
Air Conduction Procedure
A
- Measured with headphones
- Tests outer, middle, and inners & central pathways
- Start with better ear
- Modified method of limits threshold procedure (down 10, up 5)
- Frequency test order
20
Q
Modified Method of Limits bracketeing procedure
A
Down 10, up 5
21
Q
Bone Conduction Procedure
A
- Measure with bone oscillator placed on mastoid bone
- Tests inner ear and central pathway
- Modified Method of Limits
*start at 1000 Hz
22
Q
Cross-Over
A
Sound presented to test ear but is crosses over to non test ear
23
Q
Masking
A
Allows us to eliminate sound crossing over to NTE
24
Q
Interaural Attenuation definition
A
(IA) reduces sound that crosses over produced by the head
25
Cross-hearing
Sound has crossed over and is perceived by NTE
26
Interaural Attenuation for supra aural headphones
Range: ____ - _____ dB HL
Min Value for AC \_\_\_\_\_
Min Value for BC \_\_\_\_\_
IA ranges from 40-70 dB HL
40 dB HL Air Conduction
0 dB HL Bone Conduction
27
IA for insert headphones
Range?: _____ - _____ dB HL
Min value?: _____ dB HL
Range 70-90 dB HL
Min value 60 dB HL
for insert headphones
28
Describe the type of hearing loss
Right unilateral SNHL
29
Describe the type of hearing loss
Right flat moderate conductive hearing loss
30
Describe the type of hearing loss
Notched and SNHL
31
Describe the type of hearing loss
Asymmetrical sloping SNHL
32
Describe the type of hearing loss
Bilateral symmetrical severe rising to mild SNHL
33
Initial Masking Level
Name the 3 components needed
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
34
Occlusion Effect
An increase in the level of bone-conducted tone due to occluding the ear canal
35
\_\_\_\_\_\_\_\_\_\_\_\_\_ would occur without the consideration of the **occlusion effect**
Undermaksing
36
IML AC =
HL AC (NTE) + MEMC + SF
HLAC + 5 dB + 10 dB
37
Occlusion Effect
250 Hz = \_\_\_\_\_
30 dB
38
Occlusion Effect
## Footnote
500 Hz = \_\_\_\_\_
20 dB
39
Occlusion Effect
## Footnote
500 Hz = \_\_\_\_\_
10 dB
40
Occlusion Effect
## Footnote
2000 Hz = \_\_\_\_\_
0 dB
41
Occlusion Effect
## Footnote
4000 Hz = \_\_\_\_\_
0 dB
42
IML BC =
HL AC (NTE) + OE + MEMC + SF
43
Degrees of Hearing Loss
Normal _\<_ \_\_\_\_ dB
Adult _\<_ 25 dB HL
Children _\<_ 15 dB HL
44
Degrees of Hearing Loss
Mild ____ - \_\_\_\_\_ dB HL
Mild Hearing Loss
26 - 40 dB HL
45
Degrees of Hearing Loss
Moderate = _____ - \_\_\_\_\_\_ dB HL
Moderate Hearing Loss
41 - 55 dB HL
46
Degrees of Hearing Loss
Moderately Severe = ____ - \_\_\_\_ dB HL
Moderately Severe Hearing Loss
56 - 70 dB HL
47
Degrees of Hearing Loss
Severe = ____ - \_\_\_\_\_ dB HL
Severe Hearing Loss
71 - 90 dB HL
48
Degrees of Hearing Loss
Profound _\>_ \_\_\_\_\_ dB HL
Profound Hearing Loss _\>_ 90 dB HL
49
Conductive Hearing Loss
Outer & Middle ear attenuates sound energy reaching cochlea
Audiogram will show BC better than/above AC
50
Sensorineural Hearing Loss
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
For SNHL, Both BC & AC are ______ than normal but _____ in each ear
Both BC & AC are worse than normal but equal in each ear
52
Unilateral
One ear
53
Asymmetric
Different degree of hearing loss between ears
54
Mixed Hearing Loss
**Both** SNHL & conductive
* AC thresholds reflect both sensorineural & conductive components
* BC thresholds reflect sensorineural component
55
A. Conductive
B. Unilateral SNHL
C. Asymmetric SNHL
D. Mixed
C. Asymmetric SNHL
56
A. Conductive
## Footnote
B. Unilateral SNHL
C. Asymmetric SNHL
D. Mixed
A. Conductive
57
A. Conductive
## Footnote
B. Unilateral SNHL
C. Asymmetric SNHL
D. Mixed
B. Unilateral SNHL
58
A. Conductive
## Footnote
B. Unilateral SNHL
C. Asymmetric SNHL
D. Mixed
D. Mixed
59
A. Relatively Flat
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
C. Rising
60
A. Relatively Flat
## Footnote
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
F. Sloping
61
A. Relatively Flat
## Footnote
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
A. Flat
62
A. Relatively Flat
## Footnote
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
D. Notched
63
A. Relatively Flat
## Footnote
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
B. Corner
64
A. Relatively Flat
## Footnote
B. Corner
C. Rising
D. Notched
E. Precipitous
F. Sloping
E. Precipitous
65
1. Transducer Selector
2. Frequency Control
3. Attenuator Control
4. Stimulus Selector
Basic Components of Audiometer
66
Sets how signal is delivered to ear
Air Conduction
Bone Conduction
Transducer Selector
67
Octaves (125, 250, 500, 1000, 2000, 4000, 8000 Hz)
Inter Octaves (750, 1500, 3000, 6000 Hz)
Frequency Control
68
Sets intensity of signal
Air Conduction: -10 dB HL to 115 dB HL
Bone Conduction: -10 dB HL to 70 dB HL
Attenuator Control
69
Handheld or video otoscope for cerumen, foriegn objects, inflammation & TM perforation
Otoscopic Exam
70
level at which the patient detects the signal 50% of the time.
Estimates sensitivity of the auditory system over a range of frequencies
Pure Tone Thresholds
71
* Measured with headphones
* Tests outer, middle, and inner ears and central pathways
Air Conduction
72
* Measured with bone oscillator placed on mastoid bone
* Tests inner ear and central pathway
Bone Conduction
73
Audiometric Zero
sound pressure level at threshold for an average normal hearing listener
Hearing Level (dB HL)
74
graphic representation of the threshold of audibility used in clinical evaluations
Audiogram
75
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
Air Conduction Procedure
76
Down 10, up 5
Modified Method of Limits bracketeing procedure
77
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
Bone Conduction Procedure
78
Sound presented to **test ear** but is crosses over to **non test ear**
Cross-Over
79
Allows us to eliminate sound crossing over to NTE
Masking
80
(IA) reduces sound that crosses over produced by the head
Interaural Attenuation definition
81
Sound has crossed over and is perceived by NTE
Cross-hearing
82
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
Initial Masking Level
Name the 3 components needed
83
An increase in the level of bone-conducted tone due to occluding the ear canal
Occlusion Effect
84
Outer & Middle ear attenuates sound energy reaching cochlea
Audiogram will show BC better than/above AC
Conductive Hearing Loss
85
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
Sensorineural Hearing Loss
86
One ear
Unilateral
87
Different degree of hearing loss between ears
Asymmetric
88
**Both** SNHL & conductive
* AC thresholds reflect both sensorineural & conductive components
* BC thresholds reflect sensorineural component
Mixed Hearing Loss
89
Describe the Hearing Loss
Bilateral symmetrical conductive hearing loss
90
Describe the hearing loss
mixed hearing loss
91
Describe the hearing loss
Bilateral Symmetrical SNHL
92
The degree of hearing loss is described relative to the ____________ conduction
Air Conduction
93
An asymmetric hearing loss shows a __________ degree of hearing loss between ears
Different degree of hearing loss between ears
94
When masking for bone conduction testing, the masking noise is presented to the _______ ear via \_\_\_\_\_\_\_\_\_\_\_\_
non-test ear, air conduction
95
Name all frequencies that require masking for bone conduction
250 Hz, 500 Hz, 3000 Hz, 4000 Hz require masking
