Hearing preservation and cochlear implants according to inner ear approach: multicentric evaluation.

نویسندگان

  • Alexandre Caixeta Guimarães
  • Guilherme Machado de Carvalho
  • Alexandre S M Duarte
  • Walter A Bianchini
  • Andrea Bravo Sarasty
  • Maria Fernanda di Gregorio
  • Mario Emilio Zernotti
  • Edi Lúcia Sartorato
  • Arthur Menino Castilho
چکیده

INTRODUCTION Electroacoustic stimulation is an excellent option for people with residual hearing in the low frequencies, who obtain insufficient benefit with hearing aids. To be effective, the subject's residual hearing should be preserved during cochlear implant surgery. OBJECTIVES To evaluate the hearing preservation in patients that underwent implant placement and to compare the results in accordance with the approach to the inner ear. METHODS 19 subjects underwent a soft surgical technique, and the electrode MED-EL FLEX™ EAS, designed to be atraumatic, was used. We evaluated pre- and postoperative tonal audiometric tests with an average of 18.4 months after implantation, to measure the rate of hearing preservation. RESULTS 17 patients had total or partial preservation of residual hearing; 5 had total hearing preservation and two individuals had no preservation of hearing. The insertion of the electrode occurred through a cochleostomy in 3 patients, and in 2 of these there was no hearing preservation; the other 16 patients experienced electrode insertion through a round window approach. All patients benefited from the cochlear implant, even those who are only using electrical stimulation. CONCLUSION The hearing preservation occurred in 89.4% of cases. There was no significant difference between the forms of inner ear approach.

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عنوان ژورنال:
  • Brazilian journal of otorhinolaryngology

دوره 81 2  شماره 

صفحات  -

تاریخ انتشار 2015