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Auditory brainstem implant in auditory rehabilitation of patients with neurofibromatosis type 2: Hannover

Published online by Cambridge University Press:  08 March 2006

A. Lesinski-Schiedat ,
C. Frohne ,
A. Illg ,
U. Rost ,
C. Matthies ,
R.-D. Battmer ,
M. Samii  and
T. Lenarz
A. Lesinski-Schiedat
Affiliation:
ENT Clinic, Medizinische Hochschule Hannover, Germany
C. Frohne
Affiliation:
ENT Clinic, Medizinische Hochschule Hannover, Germany
A. Illg
Affiliation:
Department of Neurosurgery, Nordstadt Krankenhaus Hannover, Germany
U. Rost
Affiliation:
ENT Clinic, Medizinische Hochschule Hannover, Germany
C. Matthies
Affiliation:
Department of Neurosurgery, Nordstadt Krankenhaus Hannover, Germany
R.-D. Battmer
Affiliation:
ENT Clinic, Medizinische Hochschule Hannover, Germany
M. Samii
Affiliation:
Department of Neurosurgery, Nordstadt Krankenhaus Hannover, Germany
T. Lenarz
Affiliation:
ENT Clinic, Medizinische Hochschule Hannover, Germany
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Abstract

An auditory brainstem implant (ABI) is indicated for patients suffering from bilateral neural deafness. The most affected patients are those with neurofibromatosis type 2 (NF2). An implantation is possible either at the same time as, or after, surgical removal of an acoustic neuroma. This paper demonstrates the results of eight out of 11 patients with NF2, seven of whom received an ABI after tumour removal. Pre-operatively, all of them were deaf. Post-operatively, the first fitting served to determine the individual stimulation parameters for each electrode. The stimulation-dependent side-effects were eliminated by reducing the stimulus intensity without causing negative effects on the hearing with the ABI. Only in one case was an open set understanding achieved within the first year. However, all patients had a better speech understanding when they combined their hearing with the ABI and their lip-reading abilities. There is no correlation between the performance with ABI and the tumour size or the duration of deafness.

Keywords

Brain StemProsthesis ImplantationNeurofibromatosis 2Rehabilitation of Hearing Impaired
Type
Research Article
Information
The Journal of Laryngology & Otology , Volume 114 , Issue S27 , December 2000 , pp. 15 - 17
Copyright
Royal Society of Medicine Press Limited 2000

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