Subclinical atherosclerosis and increased risk of hearing impairment

Mary E. Fischer, Carla R. Schubert, David M. Nondahl, Dayna S. Dalton, Guan-Hua Huang, Brendan J. Keating, Barbara E.K. Klein, Ronald Klein, Ted S. Tweed, Karen J. Cruickshanks*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Objective: The study's purpose was to test if subclinical atherosclerosis was associated with the risk of developing HI in a large cohort of middle-aged participants. Methods: Study subjects were members of the Beaver Dam Offspring Study (BOSS), a longitudinal study of adult children of participants in the population-based Epidemiology of Hearing Loss Study (1993-present). BOSS examinations took place in 2005-2008 (baseline) and 2010-2013 (5-year follow-up). The 5-year incidence of hearing impairment was defined as a pure-tone average (PTA) of thresholds at 0.5, 1, 2 and 4kHz>25dB Hearing Level (dB HL) in either ear at follow-up among participants at risk (baseline PTA in both ears<= 25dB HL; n=2436, mean age=47.7 years). Atherosclerosis was measured as the mean carotid intima-media thickness and the presence of carotid artery plaque. Results: Among the 1984 participants at-risk with a follow-up audiometric examination, the 5-year incidence of hearing impairment was 8.3% (95% Confidence Interval (C.I.) 7.1, 9.5). With multivariable adjustment, carotid intima-media thickness was positively associated with hearing impairment incidence (Relative Risk (RR)=1.14 per 0.1mm, 95% C.I. 1.04, 1.24). The number of sites (0-6) with plaque was also positively associated with the incidence of impairment (RR=1.16 per site, 95% C.I. 1.01, 1.32). Conclusion: Atherosclerosis was associated with the 5-year incidence of hearing impairment in this predominantly middle-aged cohort. Interventions targeting atherosclerosis prevention may help to prevent or delay the onset of hearing impairment.

Original languageEnglish
Pages (from-to)344-349
Number of pages6
JournalAtherosclerosis
Volume238
Issue number2
DOIs
StatePublished - 1 Feb 2015

Keywords

  • Carotid artery plaque
  • Carotid intima-media thickness
  • Hearing impairment
  • Longitudinal cohort
  • Subclinical atherosclerosis

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