Aseptic Technique Practice Exam

Laminar flow hoods are used for what function in sterile preparation?

They provide general clean air in the room They replace sterile technique They provide directional airflow to reduce airborne contaminants during sterile preparation They are used for non-sterile tasks only

Correct Answer:

They provide directional airflow to reduce airborne contaminants during sterile preparation

Explanation:

In sterile preparation, controlling contaminants around the work area is crucial. A laminar flow hood creates a uniform, unidirectional stream of HEPA-filtered air across the work surface. This directional airflow forms a clean air curtain that sweeps particles away from the sterile field and toward the exhaust, minimizing the chance that room contaminants settle onto sterile materials. The key is the controlled, smooth flow that reduces turbulence and particle intrusion, not merely adding general room cleanliness. It supports aseptic technique by maintaining a protected space for sterile tasks, but it does not replace sterile technique itself.

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