Transcript Audiometric Characteristics of Children and Adults

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

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Audiogram Classification

Noise Notched
Tent-Shaped
Other
250
0
20
Hearing Level (dB HL)
Sloping
Rising
Flat
U-Shaped
Frequency (Hz)
40
60
80
100
500
1000 2000 4000 8000
Results: Configurations
% OF AUDIOGRAMS
60
Adults
Children
50
40
30
20
10
0
ing
p
Slo
ing
s
i
R
t
Fla
a
Sh
U
d
pe
ha
S
nt
e
T
d
pe
r
e
h
Ot
Results: Average Audiograms
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Sloping
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Sloping
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Sloping
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Flat
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: U-Shaped
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: U-Shaped
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Tent-Shaped
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Tent-Shaped
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Other
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Other
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Other
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Other
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Results: Other
250
Hearing Level (dB HL)
-20
500
Adults
Children
Frequency (Hz)
Frequency (Hz)
1000 2000 4000 8000
-20
0
0
20
20
40
40
60
60
80
80
100
100
120
120
250
500
1000 2000 4000 8000
Asymmetry
Left Ear Thresholds


248 60- and 61-year-old adults
227 6-year-old children
Results: Asymmetry
% OF AUDIOGRAMS
40
Adults
Children
30
20
10
0
250
500
1000
2000
FREQUENCY (Hz)
4000
8000
Results: Asymmetry @ 250 Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120
Results: Asymmetry @ 500 Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120
Results: Asymmetry @ 1k Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120
Results: Asymmetry @ 2k Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120
Results: Asymmetry @ 4k Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120
Results: Asymmetry @ 8k Hz
Left Ear (dB HL)
Adults
Children
120
120
100
100
80
80
60
60
40
40
20
20
0
0
20
40
60
80
Right Ear (dB HL)
100
0
1200
20
40
60
80
Right Ear (dB HL)
100
120