Discover the groundbreaking strides in auditory health with pure tone audiometry, a novel approach revolutionizing the assessment of congenital malformations in the middle and outer ear.
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Pure tone audiometry is a new method for evaluating congenital malformation of the middle and outer ear (CMMOE).
Wang et al., Acta Otolaryngol 2023
DOI: 10.1080/00016489.2023.2271509
Summary:
Research Focus: This study aims to evaluate the effectiveness of pure tone audiometry as an assessment method for Congenital Malformation of the Middle and Outer Ear (CMMOE), compared to the commonly used Jahrsdoerfer score based on CT scans.
Methodology: A retrospective analysis of 223 cases (244 ears) with CMMOE was conducted, examining the correlation between ossicle numbers, ossicle morphology, Jahrsdoerfer score, and the Average Air-Conduction Threshold (AACT) at various frequencies.
Results: A correlation was found between ossicle number and AACT (r = -0.187, p < 0.05), but not for ossicle morphology or Jahrsdoerfer scores. Patients with undeveloped vestibular windows had significantly poorer hearing than those with developed ones, with AACT differences at specific frequencies (0.5-4KHz, 1KHz, 2KHz, and 4KHz) all showing statistical significance (p < 0.05).
Conclusions: Pure tone audiometry can effectively evaluate the development of ossicles and vestibular windows, and more accurately reflect hearing levels than the Jahrsdoerfer score. This suggests that pure tone audiometry could serve as a new, simpler, and more accessible assessment method for CMMOE.
Significance: The study introduces pure tone audiometry as a potential alternative to the CT-based Jahrsdoerfer score, which could improve preoperative evaluations of CMMOE.