Infection Control · single question
A significant chemical spill occurs in the dental office. What is the appropriate FIRST response?
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Correct answer: A. Increase ventilation in the area and evacuate personnel from the immediate zone
- A. Correct. The first priority is to limit exposure: increase VENTILATION (open windows, turn on exhaust) and remove people from the immediate area. Only then are the Safety Data Sheet (SDS) consulted, the appropriate PPE donned, and the spill kit used for containment and clean-up. Every operatory chemical must have an accessible SDS under the OSHA Hazard Communication Standard.
- B. Incorrect. This is a fire/smoke instruction (smoke rises, so staying low helps). Many chemical vapours are HEAVIER than air and settle near the floor, so lying down can increase exposure.
- C. Incorrect. Clean-up comes AFTER ventilation, evacuation, SDS consultation and donning appropriate PPE — never bare-handed with paper towels as a reflex.
- D. Incorrect. A cloth over the face provides no meaningful respiratory protection against chemical vapours, and continuing to work maintains exposure.
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