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  • Title: Cochlear implantation outcomes in patients with far advanced otosclerosis.
    Author: Semaan MT, Gehani NC, Tummala N, Coughlan C, Fares SA, Hsu DP, Murray GS, Lippy WH, Megerian CA.
    Journal: Am J Otolaryngol; 2012; 33(5):608-14. PubMed ID: 22762960.
    Abstract:
    OBJECTIVES: To compare hearing outcomes in patients with far advanced otosclerosis (FAO) undergoing cochlear implantation to an age-matched group of controls, to describe the effects of cochlear ossification on hearing, and to review the adverse effects of implantation in patients with FAO. HYPOTHESIS: Hearing performance in patients with FAO after cochlear implantation is comparable to similarly treated postlingually deafened adults without FAO. Ossification or retrofenestral otosclerosis does not predict poor hearing outcomes. Modiolar-hugging technology reduces postoperative facial nerve stimulation. STUDY DESIGN: Retrospective chart review. SETTING: Academic neurotologic tertiary referral center. PATIENTS: Thirty patients with FAO, who metaudiological criteria for cochlear implantation, were compared to 30 age-matched controls, postlingually deafened by non-otosclerotic causes. MAIN OUTCOME MEASURES: Audiometric pre- and postoperative speech reception threshold, word, and sentence scores were analyzed. The presence of retrofenestral findings on computed tomography or intraoperative cochlear ossification were noted. RESULTS: In the FAO group, radiographic abnormalities were noted in 26.4% of patients. Intraoperative ossification requiring drillout was seen in 29.4% of patients. None developed postoperative facial nerve stimulation. There was no difference between the FAO and control groups in the mean short-term and long-term postoperative speech reception threshold, word, and sentence scores (P = .77). The presence of radiographic abnormalities did not predict hearing outcome. Intraoperative cochlear ossification was not associated with worse short-term word and sentence scores (P = .58 and 0.79, respectively), and for the long-term hearing outcome (P = .24). CONCLUSIONS: In patients with FAO, effective and safe hearing rehabilitation can be accomplished with cochlear implantation.
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