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  • Title: Otosclerosis: The effect of stapes surgery on the bone conduction audiogram.
    Author: Antoli-Candela F, Gomez-Molinero F, Busturia-Berrade I.
    Journal: Otol Neurotol; 2009 Apr; 30(3):286-294. PubMed ID: 19326498.
    Abstract:
    OBJECTIVE: The present study defines the extent of bone conduction loss that can be accounted for by stapes fixation. STUDY DESIGN: Prospective clinical evaluation. SETTING: Tertiary. PATIENTS: Two hundred consecutively operated cases. All patients have been operated by the first author. INTERVENTION: Posterior partial stapedectomy with a platinum-Teflon piston over a perichondral graft. MAIN OUTCOME MEASURES: The bone conduction is studied preoperatively, 1 week, 1 month, and 1 year after surgery. RESULTS: There are at least 3 postoperative gain patterns that change with time, from 1 week to 1 year after surgery. These are patients with maximum gain at 1, 2, and 4 kHz. CONCLUSION: The results suggest that these changes are due to the relation of the preoperative and postoperative oval window transfer functions. The gain in the 3 postoperative audiometric thresholds can be approximated by looking at the characteristics of the preoperative bone conduction audiogram.
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