Operating Theatres



ospitals around the globe employ cascade ventilation systems to maintain positive pressurisation of operating theatres. This protects the patients and staff from the ingress of infectious agents, dust and bacteria by providing an invisible barrier of positive pressure when doors within these rooms are opened.
This is a well-established principle of hygiene and infection control is championed and used the world over.
This system can also be employed in Isolation Rooms, Aseptic Suites, Endoscopy suites, Pharmacies, Cardiac Catheter Laboratories, Sterile Services Departments, Interventional Radiology Suites, CAT 3 Laboratories and other specialist areas which may require infectious control.

Apreco have been acknowledged for their assistance in contributing to Health Technical Memorandum (HTM 03-01) which supercedes HTM 2025. Apreco have also assisted with the validation of Isolation Room design following Health Building Notes (HBN 4 : Supplement 1).

Apreco’s range of VARI-centric Air Pressure Stabilisers are self contained units requiring no external power source to operate relying solely on pressure differentials to mechincally operate.

Fire and smoke/Fire rated Stabilisers are available for installations where fire smoke/fire integrity must be maintained.

Operating Theatre Suites

OperatingTheatresOperating Theatre Suites designed in accordance to HTM 03-01 employ cascade ventilation systems and require the use of Air Pressure Stabilisers to accurately control and maintain differential pressures between adjoining rooms.

Cascade ventilation ensures the flow of air moves one way only, cascading from the cleanest (most sterile) area within a suite, down into the various rooms and finally out to the assigned dirty area.
When the doors between adjoining rooms are closed, Apreco’s  VARI-centric Air Pressure Stabiliser opens to allow the air to cascade through to the next area.
When the door is open, Apreco’s  VARI-centric Air Pressure Stabiliser closes down pushing the air through the open door creating an invisible barrier of air through the door way; stopping unwanted particles passing through in to the next room.

As the airflow is constantly maintained, any unwanted particles (if present) will move down the system making their way safely away from the patients and staff.

Air Pressure Stabilisers Environmental Monitoring

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