Experiences and results with auditory brainstem implants (ABI) in NF-2 patients

On the basis of the promissing results in CI patients provided with the high rate CIS strategy the ENT and Neurosurgical Clinic of the University of Würzburg started an ABI program in 1997. The 12 channel Med-El device Combi 40 / 40+ was used and a special electrode for insertion into the lateral recess of the 4th ventricle for stimulation of the cochlear nucleus was developped. The surgical procedure is performed by a team of ENT-, Neurosurgeons and audiologists. The retrosigmoid approach in a semi-sitting position of the patient is used. 24 patient were included for candidacy of ABI implantation. Meanwhile 21…