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Published byMegan Harvey Modified over 9 years ago
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Audiometric Configurations in Children Andrea Pittman, Ph.D. Arizona State University
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Method Groups –6-year-old children –60-year-old adults Audiogram Selection Criteria –Right ear thresholds only –Thresholds for each octave test frequency (250-8000 Hz) –At least one threshold > 30 dB HL –Confirmed sensorinueral hearing loss by bone conduction audiometry –Air-bone gaps < 10 dB
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Method Core Set of Audiograms –227 children –248 adults Analyses –Configuration –Asymmetry –Progression
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*Transducer Effects Frequency (Hz) Hearing Level (dB)
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*Transducer Effects NBS 9A Coupler TDH Series Earphone Mic 6cm 3
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*Transducer Effects ER 3A Mic 2cm 3 Mic 6cm 3 Mic Frequency (Hz) Hearing Level (dB)
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All Audiograms Adults (n=248)Children (n=227)
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All Audiograms Adults (n=248)Children (n=227)
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All Audiograms Adults (n=248)Children (n=227)
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All Audiograms Adults (n=248)Children (n=227)
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All Audiograms Adults (n=248)Children (n=227)
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Audiometric Classification SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz)
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SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children
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SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children
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SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children
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SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children
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Hearing Level (dB) Frequency (Hz) SlopingRisingFlat U-ShapedTent-ShapedOther Adults Children Results (SD) +1SD
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Hearing Level (dB) Frequency (Hz) SlopingRising U-ShapedTent-ShapedOther Adults Children Results (SD)
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Hearing Level (dB) Frequency (Hz) SlopingRisingFlat U-ShapedTent-ShapedOther Adults Children Results (SD)
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SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (SD) Adults Children
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Distribution of Configurations Percent of Audiograms Category
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Sloping RisingFlat U-Shaped Tent-ShapedOther Hearing Level (dB) Frequency (Hz) *Sloping Losses Adults Children
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*Sloping Losses Adults Children Hearing Level (dB) Frequency (Hz)
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*Sloping Losses Adults Children Hearing Level (dB) Frequency (Hz)
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*Sloping Losses Adults Children
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Asymmetry
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AdultsChildren 4000 Hz Right-ear Threshold Left-ear Threshold
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*Binaural Fitting Strategies Frequency (Hz) Hearing Level (dB)
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Progression Frequency (Hz) Hearing Level (dB) Baseline Audiogram (6-yr-old)Subsequent Audiogram +15+20+10 +5
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-60 -40 -20 0 20 40 60 6789101112131415 Progression Age at Subsequent Audiogram (years) Change in Threshold (dB)
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Progression Change in Threshold (dB) Number of Thresholds
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Summary Configuration –Children had a wider variety of audiometric configurations Asymmetry –More children had asymmetric losses and those asymmetries were more severe Progression/Fluctuation –Thresholds increased and decreased on subsequent audiograms
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Frequency (Hz) Hearing Level (dB) The End
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