Wideband acoustic immittance in superior semicircular canal dehiscence |
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| Institution: | 1. Department of Speech-Language Pathology and Audiology, University of Pretoria, South Africa;2. Department of Rehabilitation Sciences, Ghent University, Belgium;1. Faculty of Frontier Engineering, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;2. Division of Mechanical Science and Engineering, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan;3. Kansokan-kyoto.com, Kyoto, Japan;4. Division of Creative Research and Development of Humanosphere, Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, Japan;5. Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan;6. Department of Otorhinolaryngology, Juntendo University School of Medicine, Tokyo, Japan;7. Department of Biomedical Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan;8. Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Japan;9. Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan;10. Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan;11. Laboratory of Medical Science, Course for School Nurse Teacher, Faculty of Education, Ibaraki University, Mito, Japan;12. Department of Intelligent Information System, Tohoku Bunka Gakuen University, Sendai, Japan;1. Department of Otorhinolaryngology, Head and Neck Surgery, Juntendo University School of Medicine, Tokyo, Japan;2. Sleep and Sleep-Disordered Breathing Center, Juntendo University Hospital, Tokyo, Japan;3. Department of Clinical Laboratory, Juntendo University Hospital, Tokyo, Japan;5. Cardiovascular Respiratory Sleep Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan;6. Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan;1. Department of Otorhinolaryngology, Head and Neck Surgery, Nagoya City University Graduate School of Medical Science, Nagoya, Japan;2. Department of Head and Neck Surgery, Aichi Cancer Center Hospital, Nagoya, Japan;3. Department of Otorhinolaryngology, Toyota Kosei Hospital, Toyota, Japan;4. Department of Otorhinolaryngology, Anjo Kosei Hospital, Anjo, Japan;5. Department of Pathology and Molecular Diagnostics, Nagoya City University Graduate School of Medical Science, Nagoya, Japan;6. Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan;1. Department of Otorhinolaryngology-Head and Neck Surgery and Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan;2. Department of Immunology and Parasitology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan;3. Faculty of Public Health, Vinh Medical University, Vinh City, Vietnam |
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| Abstract: | ObjectiveThe apparent effect of superior semicircular canal dehiscence (SSCD) on middle ear- and cochlear impedance has led researchers to investigate the use of wideband acoustic immittance as a screening tool when SSCD is suspected. The purpose of the study was to describe the absorbance characteristics and tympanometric values of ears with confirmed SSCD measured at tympanometric peak pressure (TPP) and at ambient pressure.MethodsWideband Acoustic Immittance was performed at ambient pressure and at TPP on ten participants (12 ears) with confirmed SSCD, as well as on an age- and gender matched control group (12 ears). Inferential statistics were used to determine whether statistical differences existed for the absorbance values at each of the averaged frequencies, the resonance frequency (RF) and tympanometric data between the SSCD and control groups.ResultsThe mean absorbance of the SSCD group reached a maximum at 890.9 Hz and a minimum at 6349.6 Hz. When testing absorbance at TPP, a statistically significant increase/peak in the absorbance values of the SSCD group (compared to those of the control group) was found from 630 to 890.9 Hz and a decrease from 4489.8 to 6349.6 Hz. Similar patterns were observed for absorbance at ambient pressure. A lower mean RF for ears with SSCD as well as an increased mean admittance magnitude (AM) value at RF was found compared to those of the control group.ConclusionThe use of SSCD as a screening tool when SSCD is suspected was strengthened by results similar to those of previous studies. As a result of the significant difference in RF of SSCD ears compared to the RF of the control group, the potential value of measuring the RF of the middle ear to differentiate between mass-and stiffness dominated pathologies, was also illustrated. |
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