Key result
Whole-blood viscosity was significantly associated with hearing threshold levels at 2000 and 4000 Hz, with stronger effects across all frequencies in 124 men with sensorineural hearing impairment.
Why the study?
Is whole-blood viscosity associated with hearing levels in men?
Observational (n=342)
Is whole-blood viscosity associated with hearing levels in men?
Whole-blood viscosity is significantly associated with sensorineural hearing impairment, suggesting a potential rheological or microvascular component to hearing loss.
Answers are grounded in this paper and cite their sources.
Should not yet change hearing management; leaves open rheological contributions to sensorineural loss in men.
Data from 342 men who are participants in the Caerphilly Collaborative Heart Disease Study were used to replicate a previous report of a significant relationship between measures of whole-blood viscosity and hearing levels in persons with sensorineural hearing impairment. In the unselected data, there were significant relationships between measures of whole-blood viscosity at high shear rates and hearing threshold levels at 2000 and 4000 Hz, even after accounting for the effects of age and socioeconomic group. In a subset of the data containing 124 persons selected on the basis of likely sensorineural hearing impairment, there were significant relationships between whole-blood viscosity and hearing level at all frequencies, with stronger effects at the higher frequencies. The data support the contention of a potentially important relationship between whole-blood viscosity and sensorineural hearing impairment.
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Gatehouse et al. (1989) conducted an observational in Sensorineural hearing impairment (n=342). Whole-blood viscosity was evaluated on Hearing threshold levels. Whole-blood viscosity was significantly associated with hearing threshold levels at 2000 and 4000 Hz, with stronger effects across all frequencies in 124 men with sensorineural hearing impairment.
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