Age-related High-frequency Hearing Loss Is Not Associated With Horizontal Semicircular Canal Function.
Nick M A Schubert, Catelijne G Roelofs, Rolien H Free and 2 others
PMID 35696183WHAT IT FOUND
High-frequency hearing loss did not predict horizontal semicircular canal function in adults aged 24 to 85.
Hearing declined with age, but vestibular responses on caloric and vHIT testing did not. Do not assume age-related hearing loss implies horizontal canal dysfunction.
Key findings
01Age-related high-frequency hearing loss did not predict horizontal semicircular canal hypofunction.
02No correlation was observed between age and horizontal semicircular canal function assessed by either caloric reflex testing or vHIT.
03Men showed significantly worse age-related high-frequency hearing loss and reduced caloric reflex responses compared with women.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study used patients with unilateral cerebellopont angle tumors, who have existing unilateral vestibular deficits. This population does not represent a truly healthy aging group, and the presence of a tumor on one side may have masked age-related hypofunction in the healthy ear through central compensation. The cross-sectional design prevents causal inference about the relationship between hearing loss and vestibular decline. Data completeness varied: caloric testing was available for 177 patients, but vHIT was only available for 96 patients, leading to a reduced dataset for combined analysis. Environmental factors such as noise exposure history and medication use, which impact hearing and balance, were not recorded.
Declared interests
The authors declared no conflicts of interest. The study was supported by non-U.S. government funding.
The easy way to misread this
Do not interpret the lack of association as evidence that all vestibular functions are preserved in aging. This study specifically examined the horizontal semicircular canal. Previous work cited in the paper found associations between hearing loss and saccular hypofunction, which was not assessed here. Balance issues in older adults may still stem from other vestibular end-organs or central processing changes.