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OHC - Audiology

Terms in this set (10)

Name 5 non-occupational potentially hazardous noise sources
lawn care, firearms, power tools, motorcycle, music (Page 1)
Name 3 non-auditory effects of noise exposure
Increased BP, Increased HR, disruption of sleep patterns (Page 2)
As a DOEHRS-HC user, what would you do if you locked yourself out of the application
Ask the HCPM to unlock your account or call the DHA Helpdesk (Page 6)
Doubling the distance from the sound source decreases the intensity by how many decibels
6 dB (Page 11)
Noise is considered hazardous at what levels
greater than equal to 85 dBA SPL continuous 8 hours or 140 dBP SPL impulse/impact noise (Page 13)
What is the most effective way to control noise
engineering controls (Page 15)
What is the purpose of the pinna
collects/directs sounds, localizes sounds (Page 18)
What part of the auditory mechanically amplifies sound to the cochlea
Normal Tempanic Membrane (Page 19)
Name the 5 types of hearing loss and brief description of each
Conductive hearing loss-HL in the outer and middle ear
Sensorineural hearing loss-HL in the inner ear
Mixed hearing loss-HL in conductive and sensorineural areas of the ear
Central hearing loss-HL due to damage to auditory nerve or auditory centers of the brain
Non-Organic hearing loss-HL with no organic or biologic cause that can be found (Page 25)
What are you listening for during the functional listening check
Frequency sweep - left ear; intensity sweep - right ear; steady 60 dB tone - static-check both ears; cross-talk in both ears
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