Chapter 16: NIHL – Noise Induced Hearing Loss

Noise does/does not have temporal patterns which can be measured.

Acoustic trauma is a chronic condition.

For a single exposure to a sound to qualify as a case of acoustic trauma, that sound must reach an intensity of _____ dB SPL.

Chronic NIHL must occur over _____ of exposure to noise.

For every 3 dB increasy in sound intensity, sound pressure is _____.

OSHA rules state that permissible exposure to noise/sound follows a five decibel rule. Starting at 90 decibel exposure, each 5 dB increase in sound will result in legal exposure reduced by _____.

The allowable level of exposure for 115dB is _____ minutes.

Chronic NIHL is always:

HL will _____ progress once noise exposure is abated.

CNIHL will/will not produce profound hearing loss.

Noise levels are measured with a _____.

Administration controls may include_____.

The best conservation devices are_____.

Resonant frequency is defined by ENTs as the speed of sound/4 times the _____.

5% of individuals exposed to 80dB noise levels develop _____ HL.

The impact of NIHL can be compounded by:

A change for the worse in either structure or function, outside the range of normal, is termed _____.

The disadvantage imposed by an impairment sufficient to affect a person’s efficiency in the activities of daily living is described as _____.

An actual or presumed inability to remain employed at full wages as a result of hearing loss is classified as a _____.

According to the AAO Rule, assuming the handicap begins as thresholds exceed 25dB, the level of disability increases by _____% for each decibel of hearing loss measured at 500, 1000, 2000, and 3000 Hz.