On the 18th of September 2009, a group of health care professionals and scientists involved in implantation of the auditory system attended a meeting convened by the Hacettepe Cochlear Implant Group. The aim of the meeting was to have a detailed discussion on the pressing and pertinent issues around auditory brainstem implantation (ABI) in children and in non-neurofibromatosis Type 2 (NF2) cases and to reach a consensus based on these discussions. surgery, experience of individual ABI centers, intraoperative issues, and rehabilitation with the final session devoted to discussion of the issues raised. The centers presented their experience of ABI in children who had hearing impairment because of congenital abnormalities or pathology where cochlear implantation (CI) was either contraindicated or the possibility of successful placement of the electrode was unlikely. Altogether, 61 children with various types of inner ear malformations, cochleovestibular nerve (CVN) anomalies, cochlear ossification, and bilateral cochlear fractures with cochlear nerve avulsion were presented by different groups. The following topics were discussed, and a consensus was obtained at the end of the meeting on the following issues. IN WHICH CHILDREN AND NON-NF2 PATIENTS IS THE ABI A VIABLE INTERVENTION?Two patient categories were identified: 1) Prelingual patients with inner ear malformations and cochlear nerve hypoplasia/aplasia. ABI provides auditory perception in most patients. The potential for speech and language acquisition in the longer term will depend on the age of implantation, the presence or absence of additional disabilities, and the other established factors seen in CI. It also was concluded that open set speech discrimination is possible in selected cases. In addition, prelingually deafened children because of meningitis with total ossification of both cochleas also should be included in this group. 2) Individuals deafened postlingually because of meningitis, temporal bone fractures with cochlear nerve avulsion, otosclerosis with gross cochlear destruction, or unmanageable facial nerve stimulation with CI. As with CI, the duration of severe or profound deafness is a prognostic indicator, and with short

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Children with postmeningitic deafness benefit significantly from cochlear implantation. However, the audiologic outcomes are difficult to predict, especially in the presence of cochlear ossification. Acquisition of speech and language in these children after cochlear implantation is possible even in the presence of gross cochlear ossification.