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Tympanoplasty - reporting hearing results and 'hearing objective'.

P J D Dawes1

  • 1Department of Otorhinolaryngology, Head and Neck Surgery, University of Otago, Dunedin, New Zealand. patrickd@healthotago.co.nz

Clinical Otolaryngology and Allied Sciences
|November 10, 2004
PubMed
Summary

Classifying tympanoplasty surgery as hearing preservation or hearing gain did not significantly alter outcome reporting. Postoperative air-bone gap closure and air conduction thresholds were similar across both surgical intentions.

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Area of Science:

  • Otolaryngology
  • Surgical Outcomes
  • Audiology

Background:

  • Tympanoplasty outcomes are typically reported using postoperative air-bone gap (ABG) and air conduction threshold gain.
  • Surgical intention in tympanoplasty is categorized as either 'hearing preservation' or 'hearing gain'.

Purpose of the Study:

  • To evaluate if classifying tympanoplasty by surgical intention (hearing gain vs. preservation) impacts reported outcomes.
  • To analyze the influence of surgical goals on key audiological metrics post-tympanoplasty.

Main Methods:

  • Review of early tympanoplasty results.
  • Analysis of postoperative air-bone gap (ABG) closure and air conduction threshold gain.
  • Comparison of outcomes between 'hearing gain' and 'hearing preservation' surgical groups.

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Main Results:

  • Closure of ABG to within 20 dB occurred in 72-94% of cases.
  • Average postoperative ABG ranged from 13.1 to 17.1 dB; air conduction thresholds were 27.4-33.5 dB.
  • While air conduction threshold gain was higher in the 'hearing gain' group (17 dB vs. 0 dB), overall reporting parameters were not significantly altered by surgical intention.

Conclusions:

  • The distinction between hearing preservation and hearing gain in tympanoplasty does not significantly change the standard outcome reporting metrics.
  • Key audiological results like ABG closure and threshold levels remain consistent regardless of the specific surgical aim.