PURPOSE: The primary purpose of this study was to measure the 16-year change in peak compensated static acoustic admittance (Peak Y(tm)) in a population-based cohort of older adults, and to determine whether age was associated with any observed change in Peak Y(tm). Other tympanometric measures also were taken and analyzed. METHOD: Data from two examinations (1993-1995 and 2009-2010) of the population-based Epidemiology of Hearing Loss Study (n = 1,439 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/s. RESULTS: During the 16-year period, Peak Y(tm) 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 Y(tm). Among men, baseline age was associated with change in Peak Y(tm), but in a nonlinear 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.
PURPOSE: The primary purpose of this study was to measure the 16-year change in peak compensated static acoustic admittance (Peak Y(tm)) in a population-based cohort of older adults, and to determine whether age was associated with any observed change in Peak Y(tm). Other tympanometric measures also were taken and analyzed. METHOD: Data from two examinations (1993-1995 and 2009-2010) of the population-based Epidemiology of Hearing Loss Study (n = 1,439 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/s. RESULTS: During the 16-year period, Peak Y(tm) 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 Y(tm). Among men, baseline age was associated with change in Peak Y(tm), but in a nonlinear 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.
Authors: Karen J Cruickshanks; Ted S Tweed; Terry L Wiley; Barbara E K Klein; Ronald Klein; Rick Chappell; David M Nondahl; Dayna S Dalton Journal: Arch Otolaryngol Head Neck Surg Date: 2003-10
Authors: K J Cruickshanks; T L Wiley; T S Tweed; B E Klein; R Klein; J A Mares-Perlman; D M Nondahl Journal: Am J Epidemiol Date: 1998-11-01 Impact factor: 4.897
Authors: Karen J Cruickshanks; David M Nondahl; Ted S Tweed; Terry L Wiley; Barbara E K Klein; Ronald Klein; Rick Chappell; Dayna S Dalton; Scott D Nash Journal: Hear Res Date: 2009-10-22 Impact factor: 3.208