Document Detail

Hearing loss after surgery of ruptured cerebral aneurysm.
MedLine Citation:
PMID:  11478065     Owner:  NLM     Status:  MEDLINE    
Only a few cases have been reported of hearing impairment after various procedures that result in loss of cerebrospinal fluid (CSF). We experienced eight cases of hearing loss following surgery for ruptured cerebral aneurysm. Angiography revealed that the aneurysm was located at the middle cerebral artery bifurcation in two cases, anterior communicating artery in four cases, posterior communicating artery in one case, and superior hypophyseal artery in one case. All of them were relatively far from the hearing structures. The aneurysm was clipped easily after drainage of CSF for slack brain. Pure-tone audiometry revealed unilateral or bilateral hearing loss that not only affected the low, but all frequencies. Completely normalized hearing was found in five patients at 3-6 months follow-up, whereas two cases noticed a partial loss and one made no recovery. We speculate that the explanation of hearing loss following aneurysm surgery results directly from diminished CSF pressure by the loss of CSF during operation. This decrease is transmitted to the perilymph via a patent cochlear aqueduct (CA) producing the release of perilymphatic fluid in the subarachnoid space. It is possible that a haemolabyrinth caused by an inflow of subarachnoid haemorrhage through CA could be an additional factor in the induced impaired hearing.
S Kang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British journal of neurosurgery     Volume:  15     ISSN:  0268-8697     ISO Abbreviation:  Br J Neurosurg     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-07-31     Completed Date:  2001-09-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8800054     Medline TA:  Br J Neurosurg     Country:  England    
Other Details:
Languages:  eng     Pagination:  258-63     Citation Subset:  IM    
Department of Neurosurgery, and Institute of Wonkwang Medical Science, School of Medicine, Wonkwang University, Iksan, Republic of Korea.
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MeSH Terms
Aneurysm, Ruptured / surgery*
Cerebrospinal Fluid Pressure / physiology
Craniotomy / adverse effects*
Drainage / adverse effects
Hearing Loss, Sensorineural / diagnosis,  etiology*
Intracranial Aneurysm / surgery*
Middle Aged
Subdural Effusion / surgery

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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