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Otosclerosis is a disease that produces abnormal remodeling of mature bone and fixation of the plate from the stapes to the oval window, producing conductive hearing loss. Stapedotomy is the most commonly used surgical technique. Its objective is to alleviate the fixation of the oscicular chain by means of a stapedotomy and insertion of a prosthesis, with good results in expert hands. Objective: To evaluate audiometric variation in patients operated for stapedotomy due to otosclerosis. Methodology: Observational, descriptive, retrospective cross-sectional, non-probabilistic sampling of consecutive cases of patients diagnosed with Otosclerosis who underwent stapedotomy at the Hospital de Clínicas, from 2012 to 2016. Results: We analyzed a total of 14 records corresponding to 11 patients operated in the period from January 2012 to July 2016. Seventy-two percent were female. The mean age was 38.35±15 years. All patients had hearing loss. 50% of the stapedotomies were on the Tornaco et al • Resultados funcionales de estapedotomía Med. clín. soc. 2019;3(3):88-94. -89right side; 3 patients (27%) were operated bilaterally in two stages. 85.7% had bilateral involvement in preoperative audiometry. Impedanceometry reported that 71% had bilateral as curve; 14% right ear As curve and 14% A curve in both ears and bilateral negative stapedial reflex in 57%. In post-surgical audiometry an improvement of 64% was found, and a disease evolution with worsening of hearing loss in 21.4%. Only 2 patients presented postsurgical complications (1 perilymphatic fistula and 1 anvil prosthesis disinsertion). Discussion: According to the literature the majority was female, the age range coincides with similar studies in the region, we found conductive improvement in audiometry, but a sensorineural worsening by the evolution of the disease. The stapedotomy in our study resulted in surgery with good results and few complications.

Resultados funcionales de la estapedotomía en pacientes con otosclerosis. Hospital de Clínicas