Cochlear Implantation in Postmeningitic Deafness.

Abstract

The aim of this study is to evaluate long-term outcomes of cochlear implantation (CI) in patients with postmeningitic deafness. Twenty-seven patients with severe to profound hearing loss due to bacterial meningitis and received CI were the subjects of this study. Surgical findings and long-term audiological performances were evaluated. Speech perception and speech intelligibility of the implanted patients were evaluated with the categories of auditory performance-II (CAP-II) test and speech intelligibility rating (SIR) test, respectively. Eighteen of the 27 patients had received full electrode insertion through the patent cochlear lumen. Remaining 9 patients had varying degrees of ossification throughout the cochlea and needed to be drilled to achieve partial electrode insertion. None of the patients exhibited surgical complication. Scores in both test batteries (CAP-II and SIR) were comparable between patients who received full or partial electrode insertion (P > 0.05). Cochlear implantation after postmeningitic deafness has favorable outcomes especially in long term. Although this type of inner ear pathology may require special considerations during surgery, it is a relatively safe procedure.