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  • Title: Stapedotomy With Adipose Tissue Seal: Hearing Outcomes, Incidence of Sensorineural Hearing Loss, and Comparison to Alternative Techniques.
    Author: Lin KF, Selesnick S.
    Journal: Otol Neurotol; 2016 Aug; 37(7):851-8. PubMed ID: 27309714.
    Abstract:
    OBJECTIVE: To evaluate hearing outcomes and incidence of sensorineural hearing loss (SNHL) after stapedotomy with adipose tissue seal, and to compare adipose tissue sealing with alternative techniques. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary referral center. PATIENTS: Primary stapedotomy was performed in 179 patients using a KTP laser, microdrill, piston prosthesis, and adipose tissue seal of the oval window fenestra between 1991 and 2015. An additional 123 patients underwent stapes surgery with alternative techniques. INTERVENTIONS: Stapes surgery for otosclerosis. Audiograms were performed preoperatively and 3 months postoperatively. MAIN OUTCOME MEASURES: Hearing outcomes were measured as percentage of cases with closure of the air-bone gap (ABG) to within 10 and 15 dB. SNHL was identified as cases with decrement in bone conduction thresholds greater than 10 or 5 dB. The median postoperative ABG and change in bone conduction thresholds were compared between the primary stapedotomy group (KTP laser with adipose tissue seal) and various subgroups with alternative techniques. RESULTS: We found excellent hearing outcomes after primary stapedotomy with adipose tissue seal. The ABG closed to within 10 dB in 81.01% of cases and within 15 dB in 93.30% of cases. We observed a low rate of SNHL without any cases of profound hearing loss. 1.67% of cases had a decrement in bone conduction greater than 10 dB while 6.14% of cases had a decrement greater than 5 dB. Stapedotomy with adipose tissue seal compared favorably with alternative techniques with respect to hearing outcomes and SNHL. CONCLUSIONS: Adipose tissue is an effective and cost-efficient tissue seal during stapedotomy with excellent hearing outcomes and low incidence of SNHL.
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