Document Detail

16-year Change in Acoustic Admittance Measures Among Older Adults: Data from a Population-based Study.
MedLine Citation:
PMID:  24023369     Owner:  NLM     Status:  Publisher    
PURPOSE: The primary purpose of this study was to measure the 16-year change in peak compensated static acoustic admittance (Peak Ytm) in a population-based cohort of older adults, and to determine whether age was associated with any observed change in Peak Ytm. Other tympanometric measures also were taken and analyzed.
METHOD: Data from two examinations (1993-95, and 2009-10) of the population-based Epidemiology of Hearing Loss Study (n = 1439 with data at both examinations, ages 48-84 years at baseline) were utilized to assess 16-year change. Tympanometric measures were taken using a 226 Hz probe tone, a positive-to-negative direction of pressure change, and a measured pump speed of 600/200 daPa/sec.
RESULTS: During the 16-year period, Peak Ytm declined an average of 0.009 mmho/year (0.009/year for women, 0.007/year for men). Among women, older baseline age was associated with greater decline in Peak Ytm. Among men, baseline age was associated with change in Peak Ytm, but in a non-linear pattern. Other tympanometric measures demonstrated little change after 16 years.
CONCLUSIONS: These results demonstrate a small degree of middle-ear stiffening after 16 years among these older adults, but not enough to affect function in a manner that would influence clinical decisions.
David M Nondahl; Karen J Cruickshanks; Terry L Wiley; Ted S Tweed; Dayna S Dalton
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-9-10
Journal Detail:
Title:  Journal of speech, language, and hearing research : JSLHR     Volume:  -     ISSN:  1558-9102     ISO Abbreviation:  J. Speech Lang. Hear. Res.     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-9-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9705610     Medline TA:  J Speech Lang Hear Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Ophthalmology & Visual Sciences, University of Wisconsin, Madison, Wisconsin.
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