If the air pressure inside the animal room is lower than the air pressure in the surrounding rooms, the room is said to be under:

If the air pressure inside the animal room is lower than the air pressure in the surrounding rooms, the room is said to be under:

• A. Positive pressure
• B. Ventilated pressure
• C. Negative pressure
• D. Laminar airflow

Answer: (C)

Negative pressure occurs when the air pressure inside a room is lower than the air pressure in surrounding spaces. Because of this lower internal pressure, air flows into the room from adjacent areas whenever a door or opening is present, helping to contain contaminants and prevent them from escaping to other rooms. In animal facilities, maintaining negative pressure is a containment strategy: the room is typically exhaust-driven, pulling air out so that any airborne pathogens or dust stay contained rather than drifting into hallways or neighboring rooms. Pressure differences are monitored with gauges to ensure the room remains at a lower pressure than its surroundings. This is different from positive pressure, where air would flow out of the room, potentially pushing contaminants into other areas, and it’s not about a specific airflow pattern like laminar flow.

Negative pressure occurs when the air pressure inside a room is lower than the air pressure in surrounding spaces. Because of this lower internal pressure, air flows into the room from adjacent areas whenever a door or opening is present, helping to contain contaminants and prevent them from escaping to other rooms. In animal facilities, maintaining negative pressure is a containment strategy: the room is typically exhaust-driven, pulling air out so that any airborne pathogens or dust stay contained rather than drifting into hallways or neighboring rooms. Pressure differences are monitored with gauges to ensure the room remains at a lower pressure than its surroundings. This is different from positive pressure, where air would flow out of the room, potentially pushing contaminants into other areas, and it’s not about a specific airflow pattern like laminar flow.