J Am Acad Audiol 2020; 31(07): C1-C2
DOI: 10.1055/s-0040-1716819
JAAA CEU Program

JAAA CEU Program

 

    Questions refer to Aithal et al, “Predictive Accuracy of Wideband Absorbance at Ambient and Tympanometric Peak Pressure Conditions in Identifying Children with Surgically Confirmed Otitis Media with Effusion,” 471–484.

    Learner Outcomes

    Readers of this article should be able to:

    • Understand the pattern of wideband absorbance (WBA) measured at ambient pressure (WBAA) and tympanometric peak pressure (TPP) (WBATPP).

    • Consider the potential application of compensation of middle-ear pressure eff ects in the diagnosis of otitis media with eff usion (OME).


    #

    CEU Questions

    1. The literature has shown that early-onset and longlasting otitis media in children:

      • Has no impact on children's speech and language development, hearing, and education.

      • Has impact on children's speech and language development, hearing, and education.

      • Has impact only on hearing.

    2. Wideband absorbance (WBA) is defi ned as:

      • The ratio of energy absorbed by the middle ear to incident acoustic energy supplied by the probe receiver.

      • The diff erence in energy refl ected by the middle ear to incident acoustic energy supplied by the probe receiver.

      • The ratio of energy refl ected by the middle ear to incident acoustic energy supplied by the probe receiver.

    3. It is advantageous to assess middle-ear function at TPP using WBA because:

      • Measuring WBA at TPP will reduce the middle-ear pressure eff ects and measure changes in absorbance due to middle-ear pathology per se.

      • Measuring WBA at TPP will increase the middle-ear pressure eff ects and measure changes in absorbance due to middle-ear pathology per se.

      • Measuring WBA at TPP will mask the middle-ear pressure eff ects and measure changes in absorbance due to middle-ear pathology per se.

    4. In the present study, measurements were obtained by recording acoustic responses to clicks presented at:

      • 85 dB SPL

      • 100 dB SPL

      • 55 dB SPL

    5. TPP was measured in this study by:

      • Calculating the pressure at which the maximum of low-frequency averaged absorbance between 0.376 and 2 kHz occurred.

      • Calculating the pressure at which the maximum of low-frequency averaged absorbance between 0.250 and 8 kHz occurred.

      • Using the TPP results from 226 Hz tympanometry.

    6. The results in Figure 2 illustrate that mean WBAA for the control and OME groups showed:

      • A single peak at 3 kHz

      • No peaks

      • Two large peaks, with the fi rst peak at 1.25–1.5 kHz and second peak at 3 kHz

    7. The results in Figure 2 illustrate that mean WBATPP for the control group showed:

      • A single peak at 3 kHz

      • No peaks

      • Two peaks, with the fi rst peak at 1.25–1.5 kHz and second peak at 3 kHz

    8. Mean WBAA and WBATPP results obtained from thick and thin OME fluid during surgery were compared in this study (Figure 6). Although mean WBAA results were similar, mean WBATPP obtained for thin fluid was:

      • Lower than thick fluid

      • Higher than thick fluid

      • No diff erent than thick fluid

    9. In the present study for defi nite cases of OME as confi rmed by surgery, the predictive accuracy of WBAA and WBATPP when compared to Ytm of 226-Hz tympanometry was (Table 5):

      • Signifi cantly diff erent

      • Not determined

      • Not signifi cantly diff erent

    10. Overall, the present study showed that the predictive accuracy of WBATPP across 0.3 to 6 kHz when compared to that of WBAA was:

      • The same

      • Better

      • Worse


    #
    #

    No conflict of interest has been declared by the author(s).

    Publication History

    Publication Date:
    02 September 2020 (online)

    © 2020. American Academy of Audiology. All rights reserved.

    Thieme Medical Publishers
    333 Seventh Avenue, New York, NY 10001, USA.