Evaluation of middle ear and hearing status of ankylosing spondylitis patients with wideband tympanometry and pure tone audiometry tests

Doğan, Ersoy; Közen, Melih Arif; Durankaya, Serpil Mungan; Kenar, Gökçe; Birlik, Ahmet Merih

doi:10.1007/s00405-022-07750-8

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…In recent years, numerous studies have been developed to measure acoustic impedances [1][2][3][4][5][6][7][8][9][10][11]. Moller [12] first introduced the use of 'calibrated sound sources' as a means for measuring impedances, a method that is now extensively used [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Castro-Egler,

Garcia-Gonzalez,

Aguilera-Garcia

et al. 2024

Preprint

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There are different ways to analyse energy absorbance (EA) in the human auditory system. In previous research, we developed a complete finite element model (FEM) of the human auditory system. In this mentioned work, the external auditory canal (EAC), middle ear, and inner ear (spiral cochlea, vestibule, and semi-circular canals) were modelled based on human temporal bone histological sections. Multiple acoustic, structure and fluid-coupled analyses were conducted using the FEM to perform harmonic analyses in the 0.1–10 kHz range. Once the FEM had been validated with published experimental data, the FEM numerical results were used to calculate the EA or energy reflected (ER) by the tympanic membrane. This EA was also measured in clinical audiology tests which were used as a diagnostic parameter. A mathematical approach was developed to calculate the EA and ER, with numerical and experimental results showing adequate correlation up to 1 kHz. Another published FEM had adapted its boundary conditions to replicate experimental results. Here, we recalculated those numerical results by applying the natural boundary conditions of human hearing and found that the results almost totally agreed with our FEM. This boundary problem is frequent and problematic in experimental hearing test protocols: the more invasive they are, the more the results are affected. One of the main objectives of using FEMs is to explore how the experimental test conditions influence the results. Further work will still be required to uncover the relationship between the middle ear structure and EA to clarify how to best use FEMs. Moreover, the FEM boundary conditions must be more representative in future work to ensure their adequate interpretation.

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Section: Introductionmentioning

confidence: 99%

“…To obtain middle ear diagnostics, the input impedances of the EAC measurements are transformed to represent the position of the eardrum and thus, record reflected energy (RE) and the energy absorbed, EA [5,7,8,[13][14][15][16][17][18]. However, these impedance and energy results are often inaccurate.…”

mentioning

confidence: 99%

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Castro-Egler,

Garcia-Gonzalez,

Aguilera-Garcia

et al. 2024

Preprint

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Correspondence on “hearing loss in ankylosing spondylitis”

Wu,

Chang

2023

Int J of Rheum Dis

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To the Editor, We read with utmost interest the epidemiological study by Sajal Ajmani et al. that explores the prevalence and risk factors of hearing impairment among patients with ankylosing spondylitis (AS) and suggests that conductive hearing loss is more commonly observed in AS patients when compared to the control group. We are greatly appreciative of the editor for selecting this manuscript, and we extend our gratitude to the authors for providing insights into the hearing impairment status among AS patients. 1 We would like to share some perspectives on this article. First, we wish to inquire about the authors' definition and criteria for hearing impairment. It is common in clinical practice to adhere to the standards set forth by the World Health Organization's International Classification of Impairments, Disabilities, and Handicaps. 2 According to this classification, hearing thresholds of 16-25 dB HL are classified as mild hearing loss, while thresholds of 26-40 dB HL are considered moderate hearing loss. We posit that differences in hearing impairment criteria may have the potential to influence the study outcomes.Second, in addition to the evaluation of hearing loss in ankylosing spondylitis (AS) patients through Pure-tone audiometry and impedance audiometry, it is advisable to consider additional indicators for validation. These may include DPOAEs (Distortion Product Otoacoustic Emission) testing, 3 as well as whether relevant diagnostic criteria have been provided by other specialists. It is recommended that this aspect be elaborated upon in greater detail for a more comprehensive understanding. 4 Third, the study might have some important residual confounders. We suggest further match or adjust known risk factors for hearing loss to reduce residual confounding bias, such as peripheral neuropathy, 5 various infections, and potentially ototoxic drugs. 6 Further subgroup analysis on these important covariates would be appreciated for clinical applications.In summary, we thank the authors for conducting this retrospective study. The results of the study would be more credible if the above issues are further explored. AUTH O R CO NTR I B UTI O N SConceptualization and writing were performed by Hsin-Tien Wu.Writing and editing were performed by Renin Chang.

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Evaluation of middle ear and hearing status of ankylosing spondylitis patients with wideband tympanometry and pure tone audiometry tests

Cited by 2 publications

References 26 publications

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Measuring Absorbed Energy in the Human Auditory System Using Finite Element Models: A Comparison with Experimental Results

Correspondence on “hearing loss in ankylosing spondylitis”

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