Age and Gender Effects on Wideband Absorbance in Adults With Normal Outer and Middle Ear Function

Mazlan, Rafidah; Kei, Joseph; Ya, Cheng Li; Yusof, Wan Nur Hanim Mohd; Saim, Lokman; Zhao, Fei

doi:10.1044/2015_jslhr-h-14-0199

Cited by 27 publications

(25 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We provide the initial normative database for children. The normative characteristics of absorbance for adults—mean, confidence intervals and percentiles across frequencies—is comparable with previous studies (Liu et al, 2008; Mazlan et al, 2015), confirming good external validity. The high test-retest reliability of absorbance makes it suitable as a monitoring tool for middle ear functional status in children.…”

Section: Discussionsupporting

confidence: 83%

Maturation of middle ear transmission in children

2017

View full text Add to dashboard Cite

The goal of the current study was to characterize the normative features of wideband acoustic immittance in children for describing the functional maturation of the middle ear in 5 to 12-year-old children. Absorbance and group delay were measured in adults and three groups of children, 5–6, 7–9 and 10–12-year-olds, in a cross-sectional design. Absorbance showed significant effects of the age group in four out of ten center frequencies of one-half-octave bins from 211 to 6000 Hz, while there was no significant effect for group delay at any frequency. Older children (10–12 years) showed absorbance similar to adults. Test-retest reliability was high for absorbance for all age groups. However, group delay was modestly reliable only for adults. We conclude that the middle ear transmission follows a protracted period of maturation for high frequencies and reaches adult-like feature by 10 to 12 years of age.

show abstract

Section: Discussionsupporting

confidence: 83%

Maturation of middle ear transmission in children

2017

View full text Add to dashboard Cite

show abstract

“…However, change in middleear stiffness with age was suggested by Feeney and Sanford, who found significant age effects in wideband energy reflectance and impedance when comparing young and older adults [20]. Lower stiffness with advanced age were reported by Mazlan et al examining wideband energy absorbance [29].…”

Section: Discussionmentioning

confidence: 93%

Conductive Hearing Loss with Age—A Histologic and Audiometric Evaluation

Dobrev

Dillinger

Meier

et al. 2021

JCM

View full text Add to dashboard Cite

A retrospective analysis to quantify age-related changes of the incudo-malleolar joint (IMJ) and incudo-stapedial joint (ISJ), and to analyse changes in the air-bone gap (ABG) with age, was performed. Defined histologic parameters of 153 IMJ and 106 ISJ from subjects aged from birth to 70 years were correlated to age. Additionally, audiograms of 1760 ears of 974 other subjects aged 20 to 80 years were retrospectively analysed and the ABG was correlated to age. The joint space (age group from 0 to 10 compared to 61 to 70 years) became significantly wider with age (IMJ: from a mean of 44 µm to 100 µm, p < 0.001; ISJ: from a mean of 28 µm to 69 µm, p < 0.009. The thickness of cartilage of the incus decreased in the first 20 years of life (IMJ, from a mean of 88 µm to 65 µm, p < 0.01; ISJ: from a mean of 44 µm to 35 µm, p < 0.01). The ABGs of younger ears (20–40 years) was significantly larger at 500 Hz compared to older ears (60–80 years) by 2–4 dB, while it was significantly smaller by 3–5 dB at 4000 Hz (p < 0.0017). Interindividual variations in all age groups were large for both analyses. The increased joint spaces could potentially reduce the stiffness in the joints and explain the increase in ABG at 4000 Hz and the drop at 500 Hz. While the average change is small and of minimal clinical relevance, a larger increase of ABG with age is seen in some subjects.

show abstract

“…The younger age of the control group reflects a practical reason: it is difficult to collect enough healthy normal-hearing persons of mean age of about 50. The age difference might have some effect on the immittance measures; however, there are no reports that confirm age-related changes in absorbance in healthy ears [43].…”

Section: Discussionmentioning

confidence: 96%

Measurement of Wideband Absorbance as a Test for Otosclerosis

Śliwa

Kochanek

Jędrzejczak

et al. 2020

JCM

View full text Add to dashboard Cite

The purpose of this study was to investigate the effectiveness of wideband energy absorbance in diagnosing otosclerosis by comparing the differences in acoustic absorbance between otosclerotic and normal ears. Exactly 90 surgically confirmed otosclerotic ears were included in the test group. The control group consisted of 126 matched normal-hearing subjects. The Titan hearing test platform (Interacoustics) was used for absorbance and acoustic immittance tests. Energy absorbance, measured at tympanometric peak pressure, was analyzed in the range 226–8000 Hz. Differences between normal and otosclerotic ears were analyzed in quarter-octave bands. Wideband absorbance, i.e., absorbance averaged over the 226–2000 Hz band, and resonance frequency were calculated and compared between normal and otosclerotic ears. Significant differences between the absorbance of normal and otosclerotic ears were found, especially at low and middle frequencies. No significant effect of ear side or gender was observed. For average wideband absorbance and resonance frequency, less pronounced (although significant) differences were found between normal and otosclerotic ears. Measurement of peak-pressure energy absorbance, averaged over a frequency band around 650 Hz, provides a valid criterion in testing for otosclerosis. The test is highly effective, with a sensitivity and specificity of over 85% and area under receiver operating characteristic curve above 0.9. Average wideband absorbance can also be used, but its effectiveness is lower. Other immittance-related measures are considerably less effective.

show abstract

Age and Gender Effects on Wideband Absorbance in Adults With Normal Outer and Middle Ear Function

Cited by 27 publications

References 30 publications

Maturation of middle ear transmission in children

Maturation of middle ear transmission in children

Conductive Hearing Loss with Age—A Histologic and Audiometric Evaluation

Measurement of Wideband Absorbance as a Test for Otosclerosis

Contact Info

Product

Resources

About