Blast Exposure, Tinnitus, Hearing Loss, and Postdeployment Quality of Life in U.S. Veterans: A Longitudinal Analysis.

Mohammed HAO, Reavis KM, Thapa S, Thielman EJ, Helt WJ, Carlson KF, Hughes CK. Blast Exposure, Tinnitus, Hearing Loss, and Postdeployment Quality of Life in U.S. Veterans: A Longitudinal Analysis. Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology. 2024 Dec 1; 45(10):1204-1211, DOI: 10.1097/MAO.0000000000004332.

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Abstract:

OBJECTIVE: Examine the association between military blast exposure and functional status among veterans with a focus on functional disability as a proxy for quality of life and explore the potential modifying effect of hearing loss on this association. STUDY DESIGN: Prospective cohort. SETTING: Multi-institutional tertiary referral centers. PATIENTS: 540 veterans. EXPOSURE: Self-reported military blast exposure with and without tinnitus; high-frequency hearing loss (yes/no). MAIN OUTCOME MEASURE: WHO Disability Assessment Schedule 2.0 questionnaires at baseline and annually over 5 years. The odds of membership into three functional disability trajectory groups: low functional disability, moderate functional disability, and high functional disability. RESULTS: Of 540 veterans, 197 (36.5%) self-reported a blast exposure history, and 106 of 197 (53.8%) reported tinnitus as a direct result of the blast. Blast exposure without tinnitus increased the odds of moderate functional disability compared with low functional disability (odds ratio [OR] = 1.5; 95% confidence interval [CI], 0.92-2.51), which strengthened among those with blast with tinnitus (OR, 3.6; 95% CI, 2.1-6.1). Blast exposure without tinnitus also increased the odds of membership to high functional disability versus low functional disability (OR, 2.2; 95% CI, 1.1-4.8). Hearing loss further increased the odds of reporting functional disability. The probability of low functional disability was approximately 60% if there was no history of blast or hearing loss, dropping to 20% if there was blast, tinnitus, and hearing loss history. CONCLUSIONS: Blast exposure negatively affects the quality of life of veterans, especially when compounded with tinnitus and hearing loss.