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Surgical experiences in 58 cases using the Nucleus 22 multichannel auditory brainstem implant

  • W.-P. Sollmann (a1), R. Laszig (a2) and N. Marangos (a2)

Abstract

Patients with bilateral total deafness due to lesions of the vestibulocochlear nerve can be treated by electrical stimulation of the second auditory neuron. A 22-channel multi-electrode implant with transcutaneous transmission was developed that allows the selection of the most useful electrodes. Acoustic neuromas were removed from 49 out of 58 patients by ENT surgeons and neurosurgeons working in collaboration and using either a translabyrinthine or suboccipital approach. The central electroauditory prosthesis was implanted in the same procedure. Six patients were deaf after previous acoustic neuroma surgery without recurrence, three had diagnoses other than neurofibromatosis type 2 (NF2). There were no complications due to the implantation procedure. Side effects could be excluded by stimulation of the auditory electrodes alone. Most of the patients used their ABI daily. They reported perception of different sounds and frequencies, enhancement of lip-reading ability, and three of the patients were able to use the telephone.

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Surgical experiences in 58 cases using the Nucleus 22 multichannel auditory brainstem implant

  • W.-P. Sollmann (a1), R. Laszig (a2) and N. Marangos (a2)

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