Journal of Isfahan Medical School

Journal of Isfahan Medical School

Evaluation and Comparison of the Results of Typical Tympanometry and Wideband Tympanometry in Patients with Conductive Hearing Loss

Document Type : Original Article (s)

Authors
Mehrdad Rogha 1
Sayed Hamidreza Abtahi 1
Talieh Zahedi 2
1 Associate, Department of Otolaryngology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
2 School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
10.48305/jims.v43.i822.0791
Abstract
Background: Given the wider frequency range and higher accuracy of wideband tympanometry (WBT) as compared to typical tympanometry, and the clinical importance of identifying the causes of conductive hearing loss (CHL), the present study aimed at assessing the diagnostic value of WBT in identifying otosclerosis as one of the causes of CHL.
Methods: The present cross-sectional study was performed on 28 patients with CHL. Initially, the air-bone gap (ABG) and the absorbance obtained from conventional tympanometry at 226 Hz and WBT across the frequency range of 226–8000 Hz were measured and recorded for each patient's ears.  Additionally, otosclerosis diagnosis was recorded using the typical tympanometry and WBT. The patients subsequently underwent surgery, and a definitive diagnosis of otosclerosis was confirmed.
Findings: The results of the present study revealed that typical tympanometry, with a sensitivity of 41.6% and specificity of 25%, did not have appropriate diagnostic value in the detection of otosclerosis (AUC = 0.333; P = 0.217); however, WBT, with a sensitivity of 100% and specificity of 50%, had significant diagnostic value in the detection of otosclerosis (AUC: 0.750, P = 0.045).
Conclusion: According to the results of the present study, absorption of WBT in the frequency range of 226-8000 Hz followed a two-peak pattern, which was indicative of a significant and satisfactory diagnostic value of WBT in detection of otosclerosis before surgery.

Highlights

Mehrdad Rogha: Google Scholar 

Sayed Hamidreza Abtahi: Google Scholar

Keywords
Conductive hearing loss
Otosclerosis
Wideband tympanometry

Subjects

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Journal of Isfahan Medical School
Volume 43, Issue 822
2nd Week,, September
July and August 2025
Pages 791-795

  • Receive Date 10 June 2025
  • Accept Date 02 July 2025