Pseudo air–bone gap in sensorineural hearing loss: Effect of signal frequency and degree of hearing loss – implications for clinical diagnosis

Vijayasarathy, Srikar; Shetty, HemanthNarayan

doi:10.4103/indianjotol.indianjotol_14_23

Indian J Otol

2023

DOI: 10.4103/indianjotol.indianjotol_14_23

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Pseudo air–bone gap in sensorineural hearing loss: Effect of signal frequency and degree of hearing loss – implications for clinical diagnosis

Srikar Vijayasarathy

HemanthNarayan Shetty

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2024

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Air-Conduction and Bone-Conduction Reference Threshold Levels – A Multicenter Study

Margolis,

Sanchez,

Hunter

et al. 2024

Preprint

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ObjectivesAir-conduction (AC) and bone-conduction (BC) thresholds were measured to evaluate standard reference-threshold values and recommend revisions to the audiometer standards.DesignAC and BC thresholds were measured from listeners with normal hearing (NH) and sensorineural hearing loss (SNHL) at three sites with recently-calibrated audiometers.Study SampleNH participants (n = 53) were selected based on age (18 – 25 years), normal AC thresholds, tympanometry and otoscopy, and absence of otologic disease. SNHL participants (n = 49) were selected based on AC thresholds, tympanometry and otoscopy, and absence of otologic disease.ResultsAC thresholds obtained from NH listeners with the Radioear DD450 earphone averaged 3.7 dB HL. Air bone gaps (ABGs) occurred in NH and SNHL listeners above 2000 Hz and SNHL listeners at 250 Hz. ABGs were larger in SNHL listeners than NH listeners.ConclusionsSmall corrections to the standard circumaural earphone RETSPLs are recommended for use with the DD450 earphone. The causes of ABGs in listeners without conductive pathology are discussed. False ABGs place patients at risk for unnecessary medical and surgical intervention. Reference threshold levels are recommended that will achieve two objectives: 1) AC thresholds from young NH listeners should average 0 dB HL; 2) ABGs from listeners with normal middle-ear function should average 0 dB.

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Air-Conduction and Bone-Conduction Reference Threshold Levels – A Multicenter Study

Margolis,

Sanchez,

Hunter

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

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Pseudo air–bone gap in sensorineural hearing loss: Effect of signal frequency and degree of hearing loss – implications for clinical diagnosis

Cited by 1 publication

References 17 publications

Air-Conduction and Bone-Conduction Reference Threshold Levels – A Multicenter Study

Air-Conduction and Bone-Conduction Reference Threshold Levels – A Multicenter Study

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