Which practice helps ensure containment controls are effective?

• A. Maintaining negative pressure, barrier integrity, and cleaning validation
• B. Reducing PPE usage
• C. Delaying maintenance
• D. Increasing visitors

Answer: (A)

Containment controls stay effective only when the safeguards that prevent release are kept functioning as designed. The key is to maintain a combination of environmental and physical controls: keeping the space under negative pressure so air moves into the containment rather than out, ensuring barrier integrity so there are no gaps in walls, doors, or seals, and performing cleaning validation to prove that cleaning processes reliably remove contaminants from surfaces. Together, these elements help ensure contaminants don’t escape and that rooms and equipment are properly decontaminated.

If you cut PPE usage, maintenance delays, or allow more visitors, containment is undermined: less PPE can raise exposure risk, delays in maintenance can let seals or airflow controls fail, and more visitors increase movement and potential breaches, all reducing effectiveness.