TITLE:
Revisional Cochlear Implant Surgeries in Adults
AUTHORS:
Maria Stella A. Amaral, Henrique F. Pauna, Eduardo T. Massuda, Ana Claudia M. B. Reis, Miguel A. Hyppolito
KEYWORDS:
Cochlear Implants, Sensorineural Hearing Loss, Deafness, Revisional Surgery
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.10 No.9,
September
18,
2019
ABSTRACT: Introduction: Cochlear implant (CI) surgery allows hearing reestablishment among
individuals with severe to profound hearing loss. However, only few patients
will need a surgical reassessment. Objectives: To verify the incidence
of surgical reassessment among adult patients; to verify the reasons that led
the second surgery to be performed; to verify the efficacy—and audiological
outcomes—of revisional surgery. Method: A longitudinal retrospective
cohort study was carried out with the review of medical records, of adult
patients, with bilateral severe to profound sensorineural hearing loss who
underwent to revisional surgery, from 2004 to 2016 at a CI Center, in Brazil. Results: One hundred fifty-eight CI surgeries were performed among 137 adult
patients. Fourteen revisional surgeries were performed among 10 patients: five
surgeries were due by displacement of the internal unit; one because of having
excessive subcutaneous tissue; one due to non-progression of the electrodes
during the initial surgery, one late tympanic membrane perforation, one late
facial palsy and, one due to a suture dehiscence in the surgical incision with
exposure of the internal unit. Conclusions: The incidence of surgical
reassessment among adult CI patients was 8.9%. All implanted patients that
underwent a new surgical approach maintained an improved auditory threshold
after revisional CI surgery.