| Electrophysiological monitoring of cochlear function as a non-invasive method to assess intracranial pressure variations. | |
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MedLine Citation:
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PMID: 22327678 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The "cochlear" aqueduct is a narrow channel connecting the subarachnoid and intralabyrinthine spaces. Through this communication, cerebrospinal fluid (CSF) pressure variations are transmitted to the intralabyrinthine space and modify the impedance of the ear. Distortion-product otoacoustic emissions (DPOAE) are sounds emitted by cochlear sensory cells in response to sonic stimulation. Cochlear microphonic potentials (CMP) express the electrophysiological activity of cochlear sensory cells. At 1 kHz, the phase of DPOAE and CMP varies according to the impedance of the ear and thus to intracranial pressure (ICP) variations. DPOAE and CMP have been shown to strictly follow ICP variations produced during infusion tests performed in the diagnosis of chronic hydrocephalus. DPOAE and CMP recordings appear to be valuable tools for monitoring ICP non-invasively. |
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Authors:
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Laurent Sakka; Aurélie Thalamy; Fabrice Giraudet; Thierry Hassoun; Paul Avan; Jean Chazal |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Acta neurochirurgica. Supplement Volume: 114 ISSN: 0065-1419 ISO Abbreviation: Acta Neurochir. Suppl. Publication Date: 2012 |
Date Detail:
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Created Date: 2012-02-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100962752 Medline TA: Acta Neurochir Suppl Country: Austria |
Other Details:
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Languages: eng Pagination: 131-4 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, Clermont University, Clermont-Ferrand, France. lsakka@chu-clermontferrand.fr |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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