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Audiometric Configurations in Children Andrea Pittman, Ph.D. Arizona State University.

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Presentation on theme: "Audiometric Configurations in Children Andrea Pittman, Ph.D. Arizona State University."— Presentation transcript:

1 Audiometric Configurations in Children Andrea Pittman, Ph.D. Arizona State University

2 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

3 Method Core Set of Audiograms –227 children –248 adults Analyses –Configuration –Asymmetry –Progression

4 *Transducer Effects Frequency (Hz) Hearing Level (dB)

5 *Transducer Effects NBS 9A Coupler TDH Series Earphone Mic 6cm 3

6 *Transducer Effects ER 3A Mic 2cm 3 Mic 6cm 3 Mic Frequency (Hz) Hearing Level (dB)

7 All Audiograms Adults (n=248)Children (n=227)

8 All Audiograms Adults (n=248)Children (n=227)

9 All Audiograms Adults (n=248)Children (n=227)

10 All Audiograms Adults (n=248)Children (n=227)

11 All Audiograms Adults (n=248)Children (n=227)

12 Audiometric Classification SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz)

13 SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children

14 SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children

15 SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children

16 SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (Mean) Adults Children

17 Hearing Level (dB) Frequency (Hz) SlopingRisingFlat U-ShapedTent-ShapedOther Adults Children Results (SD) +1SD

18 Hearing Level (dB) Frequency (Hz) SlopingRising U-ShapedTent-ShapedOther Adults Children Results (SD)

19 Hearing Level (dB) Frequency (Hz) SlopingRisingFlat U-ShapedTent-ShapedOther Adults Children Results (SD)

20 SlopingRisingFlat U-ShapedTent-ShapedOther Hearing Level (dB) Frequency (Hz) Results (SD) Adults Children

21 Distribution of Configurations Percent of Audiograms Category

22 Sloping RisingFlat U-Shaped Tent-ShapedOther Hearing Level (dB) Frequency (Hz) *Sloping Losses Adults Children

23 *Sloping Losses Adults Children Hearing Level (dB) Frequency (Hz)

24 *Sloping Losses Adults Children Hearing Level (dB) Frequency (Hz)

25 *Sloping Losses Adults Children

26 Asymmetry

27 AdultsChildren 4000 Hz Right-ear Threshold Left-ear Threshold

28 *Binaural Fitting Strategies Frequency (Hz) Hearing Level (dB)

29 Progression Frequency (Hz) Hearing Level (dB) Baseline Audiogram (6-yr-old)Subsequent Audiogram +15+20+10 +5

30 -60 -40 -20 0 20 40 60 6789101112131415 Progression Age at Subsequent Audiogram (years) Change in Threshold (dB)

31 Progression Change in Threshold (dB) Number of Thresholds

32 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

33 Frequency (Hz) Hearing Level (dB) The End

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