Positive-pressure air handling systems with unidirectional flow of non-recirculated air from the ceiling to the floor are designed to:
A) create mild air turbulence to prevent dust from settling on surfaces.
B) augment the oxygen-enriched environment with dust-free air.
C) flow clean air over the patient and prevent corridor air intake.
D) All of the options are correct.

Question

Quizplus · Accepted Answer

To control bioparticulate matter in the OR environment,ventilating air should be delivered to the room at the ceiling and exhausted near the floor and on walls opposite to those containing inlet vents.Airflow should be in a downward directional flow,moving down and through the location with a minimum of draft,to the floor and exhaust portals.Air pressure in the OR should be greater than that in the surrounding corridor;this is called "positive pressure" in relation to corridors and adjacent areas.This positive pressure helps maintain the unidirectional airflow in the room and minimizes the amount of corridor air (less clean area)entering the OR (more clean area).

Positive-Pressure Air Handling Systems with Unidirectional Flow of Non-Recirculated Air