AAO-HNSF Certificate Program for Otolaryngology Personnel
Unmasked Asymmetrical Hearing Loss
Air Conduction
250
500
1000
2000
3000
4000
6000
8000
Mask
Left
5
5
0
0
5
10
10
5
Right
55
60
55
55
60
65
65
65
Bone Conduction
Mask
250
500
1000
2000
3000
4000
Left
5
5
0
0
0
5
Right
5
5
0
0
0
5
Speech Discrimination
Speech Reception Threshold
Masking
Masking
%
Level
List
Left
5
Left
100
40 85
NU6 NU6
Right
60
Right
88
AAO-HNS/F
Certificate Program for Otolaryngology Personnel Workshop
7
Masked Asymmetrical Hearing Loss
Air Conduction
250
500
1000
2000
3000
4000
6000
8000
Mask
Left
5
5
0
0
5
10
10
5
Right
85
105
110
NR
NR
NR
NR
NR
*
Bone Conduction
250
500
1000
2000
3000
4000
Mask
Left
5
5
0
0
0
5
Right
NR
NR
NR
NR
NR
NR
*
Speech Reception Threshold
Speech Discrimination
Masking
%
Level
List
Masking
Left
5
Left
100
40
NU6
Right
NR
Right
4
110
NU6
*
AAO-HNS/F
Certificate Program for Otolaryngology Personnel Workshop
8
Masking • When is masking used?
–Whenever it is suspected that the non-test ear is contributing to the test ear.
AAO-HNS/F
Certificate Program for Otolaryngology Personnel Workshop
9
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