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Calculated versus measured pure tone bone conduction 3 kHz thresholds in sudden sensorineural hearing loss

Published online by Cambridge University Press:  26 July 2021

S Shilo ,
T Ziv-Baran ,
Y Oron ,
O Handzel ,
O Cavel ,
R A Eta ,
N Muhanna  and
O J Ungar
S Shilo
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
T Ziv-Baran
Affiliation:
Department of Epidemiology and Preventive Medicine, School of Public Health, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
Y Oron
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
O Handzel
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
O Cavel
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
R A Eta
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
N Muhanna
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
O J Ungar*
Affiliation:
Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
*
Author for correspondence: Dr Omer J Ungar, Department of Otolaryngology Head and Neck Surgery and Maxillofacial Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel E-mail: ungaromer@gmail.com
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Abstract

Objective

To compare the measured bone conduction threshold at 3 kHz with the calculated threshold in newly diagnosed sudden sensorineural hearing loss.

Methods

A retrospective chart review was conducted of pure tone audiograms in confirmed sudden sensorineural hearing loss cases.

Results

Of 157 patients with sudden sensorineural hearing loss, 144 had idiopathic hearing loss, 8 had vestibular schwannoma and 5 had Ménière's disease. The r value for the correlation between the two methods of 3 kHz assessment for all patients was 0.887 (p < 0.001). The mean difference between the measured and calculated 3 kHz thresholds was 0.76 ± 7.96 dB, 0.4 ± 8.08 dB and 1.5 ± 1.8 dB in the sudden sensorineural hearing loss, idiopathic and Ménière's disease groups, respectively. The mean difference between the measured and calculated 3 kHz thresholds was significantly greater in the vestibular schwannoma group (6.86 ± 4.38 dB) than in the idiopathic group (p = 0.013).

Conclusion

The 3 kHz frequency may encompass important audiometric information. A discrepancy between the measured and calculated bone conduction 3 kHz thresholds raises suspicion of an underlying vestibular schwannoma as an aetiology for sudden sensorineural hearing loss, and these thresholds should therefore be measured independently and routinely.

Keywords

Sensorineural Hearing LossVestibular SchwannomaMeniere DiseaseAudiometryBone Conduction
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 135 , Issue 9 , September 2021 , pp. 820 - 824
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press

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Footnotes

Dr O J Ungar takes responsibility for the integrity of the content of the paper

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