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Predictive Effect of Bone Conduction Pattern on Hearing Outcomes of Stapes Surgery
Scott B Shapiro1, Meghan Grojean, Michael Hong
1Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio.
Summary
Preoperative bone conduction patterns generally do not impact stapes surgery outcomes in otosclerosis patients. Favorable hearing results are common, regardless of specific bone conduction patterns, though a 2000 Hz notch doesn't improve results.
Area of Science:
- Otolaryngology
- Audiology
- Neurosurgery
Background:
- Stapes surgery, including stapedotomy and stapedectomy, is a common treatment for otosclerosis.
- Understanding preoperative factors that influence surgical outcomes is crucial for patient selection and counseling.
Purpose of the Study:
- To investigate the association between preoperative bone conduction patterns and hearing outcomes following stapes surgery.
- To determine if specific bone conduction patterns, such as a 2000 Hz notch, predict surgical success.
Main Methods:
- Retrospective case series of 137 patients undergoing stapedotomy or stapedectomy between 2013 and 2019.
- Analysis of audiometric data, including air-bone gap (ABG) and bone conduction thresholds.
- Statistical assessment of the relationship between bone conduction patterns and postoperative hearing levels.
Main Results:
- The mean preoperative air-bone gap (ABG) was 26.8 dBHL, with 88.7% achieving closure to <20 dBHL.
- A 2000 Hz notch was present in 32.1% of ears, but showed no significant association with hearing outcomes.
- Increased bone conduction in the operated ear compared to the contralateral ear was linked to ABG closure <10 dBHL and overclosure.
Conclusions:
- Hearing outcomes after stapes surgery are generally favorable in properly selected otosclerosis patients, irrespective of most preoperative bone conduction patterns.
- While a 2000 Hz notch is associated with otosclerosis, it does not correlate with improved surgical hearing results.
