Assessment of ear disorders using power reflectance.

Abstract:

:This article describes the effect of various pathologies on power reflectance (PR) and absorbance measured in human adults. The pathologies studied include those affecting the tympanic membrane, the middle-ear ossicles, the middle-ear cavity, the inner ear, and intracranial pressure. Interesting pathology-induced changes in PR that are statistically significant have been reported. Nevertheless, because measurements of PR obtained from normal-hearing subjects have large variations and some pathology-induced changes are small, it can be difficult to use PR alone for differential diagnosis. There are, however, common clinical situations without reliable diagnostic methods that can benefit from PR measurements. These conditions include ears with a normal-appearing tympanic membrane, aerated middle-ear cavity, and unknown etiology of conductive hearing loss. PR measurements in conjunction with audiometric measurements of air–bone gap have promise in differentiating among stapes fixation, ossicular discontinuity, and superior semicircular canal dehiscence. Another possible application is to monitor an individual for possible changes in intracranial pressure. Descriptions of mechanisms affecting PR change and utilization of PR measurements in clinical scenarios are presented.

journal_name

Ear Hear

journal_title

Ear and hearing

authors

Nakajima HH,Rosowski JJ,Shahnaz N,Voss SE

doi

10.1097/AUD.0b013e31829c964d

subject

Has Abstract

pub_date

2013-07-01 00:00:00

pages

48S-53S

eissn

0196-0202

issn

1538-4667

pii

00003446-201307001-00009

journal_volume

34 Suppl 1

pub_type

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  • Sensory-Cognitive Interactions in Older Adults.

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