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Cochlear implant failure due to unexpected absence of the eighthnerve – a cautionary tale

  • R. F. Gray (a1), J. Ray (a1), D. M. Baguley (a1), Z. Vanat (a1), J. Begg (a1) and P. D. Phelps (a1)...

Abstract

We present a case of bilateral absence of the eighth cranial nerve in the internal auditory meatus (IAM). This caused total failure of responses after cochlear implantation in a six-year-old patient with congenital deafness. Pre-operative magnetic resonance (MR)imaging is important to show not only the anatomy of the middle and inner ears but also the structures in the IAM.

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Corresponding author

Address for correspondence: Mr R. F. Gray, M.A., F.R.C.S., Clinic 10, Box 48, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 2QQ.

References

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Arriaga, M. A., Carrier, D. (1996) MRIand clinical decisions in cochlear implantations. American Journal of Otology 17: 547553.
Bath, A. P., O'Donoghue, G. M., Holland, I. M., Gibbin, K. P. (1993) Paediatric cochlear implantation: How reliable is computed tomography in assessing cochlear patency? Clinical Otolaryngology 18: 475479.
Brunner, H. G., Winter, R. M. (1991) Autosomal dominant inheritance of abnormalities of the hands and feet with short palpebral fissures, variable microcephaly with learning disability, and oesophageal/duodenal atresia. Journal of Medical Genetics 28: 389394.
Casselman, J. W., Offeciers, F. E., Govaerts, P. J. (1997) Aplasia and hypoplasia of the vestibulocochlear nerve: diagnosis with MR imaging. Radiology 202(3): 773781.
Cohen, N. L., Hoffman, R. A. (1991) Complications of cochlear implantation surgery in adults and children. Annals of Otology, Rhinology and Laryngology 100: 708711.
Feingold, M. (1978) An unusual microcephaly. Hospital Practice 13: 4449.
Phelps, P. D. (1992) Cochlear implants for congenital deformities. Journal of Laryngology and Otology 106: 967970.
Shelton, A., Luxford, W. M., Tonokawa, L. L., Lo, W., House, W. F. (1989) The narrow internal auditory canal in children: a contradiction to cochlear implants. Otolaryngology - Head and Neck Surgery 100: 227231.
Summerfield, A. Q., Marshall, D. H. (1995)Cochlear Implantation in the UK 1990–1994. Report by the MRC Institute of Hearing Research on the Evaluation of the National Cochlear Implant Programme: Executive summary and synopsis: MRC Institute of Hearing Research, Nottingham, UK, pp 15.

Keywords

Cochlear implant failure due to unexpected absence of the eighthnerve – a cautionary tale

  • R. F. Gray (a1), J. Ray (a1), D. M. Baguley (a1), Z. Vanat (a1), J. Begg (a1) and P. D. Phelps (a1)...

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