CAOHC Ototoxic Agents and Chemical Exposures

Question 1

Which of the following is classified as an ototoxic solvent commonly found in industrial settings?

Accepted Answer

Toluene

Answer

Acetone

Answer

Ethanol

Answer

Isopropanol

Question 2

What is the primary mechanism by which ototoxic chemicals damage the auditory system?

Accepted Answer

Destruction of outer hair cells in the cochlea

Answer

Calcification of the ossicular chain

Answer

Inflammation of the pinna

Answer

Blockage of the eustachian tube

Question 3

When a worker is exposed to both ototoxic chemicals and high noise levels simultaneously, the resulting hearing damage is typically:

Accepted Answer

Synergistic, greater than the sum of individual effects

Answer

Additive, equal to the sum of individual effects

Answer

Reduced due to chemical numbing of cochlear receptors

Answer

Unchanged from noise-only exposure

Question 4

Which class of medications is most commonly associated with ototoxicity in occupational health monitoring?

Accepted Answer

Aminoglycoside antibiotics

Answer

Beta-blockers

Answer

ACE inhibitors

Answer

Proton pump inhibitors

Question 5

Under OSHA regulations, what is the recommended approach when workers are exposed to ototoxic chemicals in a noisy environment?

Accepted Answer

Include them in the hearing conservation program regardless of noise level

Answer

Only monitor them if noise exceeds 90 dBA

Answer

Exclude them from audiometric testing

Answer

Provide chemical-resistant hearing protection only

Question 6

Which heavy metal is recognized as an ototoxic agent in industrial environments?

Accepted Answer

Lead

Answer

Iron

Answer

Zinc

Answer

Copper