CHC Infection Control & Interim Life Safety Flashcards
6 cards from real CHC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CHC Infection Control & Interim Life Safety flashcards as text
Negative air pressure in a construction containment zone means:
Answer: Air flows into the work zone from surrounding areas
Negative pressure means air is drawn into the construction zone, preventing dust and airborne contaminants from escaping into adjacent patient care areas.
Anterooms (vestibules) at construction zone entrances primarily serve to:
Answer: Create a buffer zone preventing contaminant release when doors are opened
Anterooms act as airlocks, preventing a direct pathway for airborne contaminants to escape into adjacent clean areas when workers enter or exit the zone.
How often should negative pressure be verified during active ICRA Class IV construction?
Answer: Daily, at minimum
Negative pressure in ICRA Class IV zones must be verified at least daily to ensure containment integrity is continuously maintained.
What is the minimum air pressure differential recommended between a construction containment zone and adjacent patient areas?
Answer: 0.01 inches water gauge (w.g.)
A minimum pressure differential of 0.01 inches water gauge is the standard benchmark used to verify effective negative pressure containment in healthcare construction.
Which HEPA filter efficiency rating is required for exhaust units used in healthcare construction containment?
Answer: 99.97% efficiency at 0.3 microns
True HEPA filters must achieve 99.97% efficiency at 0.3 microns to effectively capture Aspergillus spores and other airborne pathogens.
Workers exiting an ICRA Class IV construction zone should:
Answer: Remove protective clothing and HEPA-vacuum before leaving the zone
Workers must remove dusty PPE and be HEPA-vacuumed at the exit point to prevent tracking construction contaminants into clean hospital areas.