Audiometric Characteristics of Children and Adults Andrea Pittman, Ph.D. Patricia Stelmachowicz,...
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Audiometric Characteristics of Children and Adults Andrea Pittman, Ph.D. Patricia Stelmachowicz, Ph.D. Boys Town National Research Hospital Funded by a grant from NIH
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Transcript of Audiometric Characteristics of Children and Adults Andrea Pittman, Ph.D. Patricia Stelmachowicz,...
Audiometric Characteristics of Children and Adults
Andrea Pittman, Ph.D.Patricia Stelmachowicz, Ph.D.
Boys Town National Research Hospital
Funded by a grant from NIH
Possible Adult-Child Differences
Audiometric Configurations Right-Left Ear Asymmetry of Hearing Loss Progression of Hearing Loss
Methods
Groups 248 audiograms from 60- and 61-year-old
adults 227 audiograms from 6-year-old children
Criteria Right ear thresholds at octave test
frequencies 250-8 kHz At least one threshold > 30 dB Confirmed right ear sensorinueral hearing
loss by bone conduction audiometry Air-bone gaps < 10 dB.
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Audiogram Classification
Sloping Rising Flat U-Shaped Noise Notched
Tent-Shaped Other
0
20
40
60
80
100
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Results: Configurations
0
10
20
30
40
50
60
% O
F AU
DIO
GR
AMS
AdultsChildren
Results: Average Audiograms
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Sloping
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Sloping
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Sloping
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Flat
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: U-Shaped
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: U-Shaped
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Tent-Shaped
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Tent-Shaped
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Other
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Other
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Other
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Other
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Results: Other
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
-20
0
20
40
60
80
100
120
250 500 1000 2000 4000 8000
Frequency (Hz)
Heari
ng L
evel (d
B H
L)
Adults Children
Asymmetry
Left Ear Thresholds 248 60- and 61-year-old adults 227 6-year-old children
Results: Asymmetry
0
10
20
30
40
250 500 1000 2000 4000 8000
FREQUENCY (Hz)
% O
F AU
DIO
GR
AM
S
AdultsChildren
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 250 Hz
Adults Children
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 500 Hz
Adults Children
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 1k Hz
Adults Children
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 2k Hz
Adults Children
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 4k Hz
Adults Children
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
0
20
40
60
80
100
120
0 20 40 60 80 100 120
Right Ear (dB HL)
Left
Ear
(dB H
L)
Results: Asymmetry @ 8k Hz
Adults Children
