NIHL

Which of the following is considered a dangerous continuous noise level in the workplace?

• 65 dB for 4 hours

• 75 dB for 6 hours

• 85 dB for 8 hours

• 95 dB for 2 hours

All of the following are risk factors for NIHL EXCEPT:

• Diabetes
  

• Organic solvents
  

• Smoking
  

• Asthma

Which type of hearing loss is most commonly associated with acoustic trauma?

• Conductive hearing loss
  

• Mixed hearing loss
  

• Sensorineural hearing loss
  

• Central hearing loss

In acoustic trauma, what part of the ear is primarily injured?

• Tympanic membrane
  

• Ossicles
  

• Sensory cells of the cochlea

• Eustachian tube
  

NIHL typically affects which frequency the most?

• 250 Hz
  

• 1 kHz
  

• 4 kHz
  

• 8 kHz

In general Cochlear implant candidacy requires:

• Moderate conductive hearing loss
  

• Bilateral hearing loss with normal cochlea and intact VIII nerve
  

• Unilateral sudden hearing loss

• Only tinnitus without hearing loss

Hearing aids that process both settings and sound digitally are known as:

• Analog
  

• Digital programmable
  

• Full digital
  

• Hybrid analog

Which of the following can interfere with brain function due to noise exposure?

• Enhanced reflexes
  

• Improved sleep
  

• Dementia
  

• Enhanced memory

Nighttime use of loudspeakers is banned between which hours?

• 8 PM – 6 AM
  

• 9 PM – 7 AM
  

• 10 PM – 6 AM
  

• 11 PM – 5 AM

Which of the following is true about non-occupational NIHL (socioacusis)?

• Caused only in factory workers
  

• Caused by continuous exposure to whispers
  

• Caused by loud recreational activities
  

• Occurs only in people above 70 years