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Hearing loss after neurosurgery. The influence of low cerebrospinal fluid pressure

Published online by Cambridge University Press:  29 June 2007

Alice Walsted*
Affiliation:
Department of Audiology, Gentofte University Hospital, Denmark Department of Neurosurgery, Glostrup Hospital, Denmark
Ole Amtoft Nielsen
Affiliation:
Department of Otorhinolaryngology, Glostrup Hospital, Denmark
Peter Borum
Affiliation:
Department of Neurosurgery, Glostrup Hospital, Denmark
*
Dr Alice Walsted, Melchiorsvej 6, DK-2920 Charlottenlund, Denmark Fax: (+45) 44-66-05-11.

Abstract

A prospective study was performed to investigate the effect of neurosurgery on hearing. Thirty-two patients underwent neurosurgery while 32 patients who had surgical procedures not involving puncture or drainage of the subdural space, served as a control group. In the neurosurgical group, a significant loss of hearing was observed in the immediate post-operative period, with recovery over one week. No average threshold shift was observed in the control group. It is suggested that following neurosurgery the mechanism of hearing loss results directly from a decrease in pressure and/or volume of the cerebrospinal fluid, which is reflected within the perilymphatic fluid, comparable to a transitory endolymphatic hydrops.

Type
Main Articles
Copyright
Copyright © JLO (1984) Limited 1994

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