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학습 자료 둘러보기 →For a construction worker with gradual hearing loss, the priority assessment is daily exposure to heavy machinery noise without hearing protection. This represents a direct, modifiable causative factor for Noise-Induced Hearing Loss (NIHL).
NIHL typically presents as a bilateral, high-frequency sensorineural hearing loss that develops gradually over years. The absence of hearing protection devices (HPDs) transforms a hazardous environment into an active source of cochlear injury.
Do not confuse this with conductive loss from acute infection or cerumen impaction. Document the specific noise source, duration of exposure, and consistent use of HPDs. Referral for audiometry is essential to establish a baseline and confirm the characteristic 4,000 Hz notch.
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