Method 2: Setra AIIR WatchĪ second effective method to create additional isolation rooms in spaces not originally designed for isolation without expensive retrofit construction is to use Setra AIIR Watch. A fan and filter system should create at least 12 air changes per hour (ACH), which is equivalent to a traditional isolation room. To maintain this negative pressure, the area inside the curtain barrier should not have recirculating HVAC returns. Contaminated air is pulled through the filter before being exhausted into the rest of the room. The fan and filter are positioned between the curtain and the rest of the room. Around the patient’s bed, a curtain is hung to create a boundary from the rest of the room. One common method of creating additional temporary isolation rooms is to employ a portable fan system with a HEPA filter. During the COVID-19 pandemic, increasing the number of isolation rooms has not been a typical expansion for many facilities, but rather a quick adjustment to handle the increase in cases. Applications outside of hospitals are not typically built with HVAC systems that can easily create negative pressure isolation spaces changing a room to a traditional isolation room involves lengthy and expensive HVAC construction. Traditionally, isolation rooms are set up via manipulation of a building’s HVAC system to control the airflow. The contaminated air in the isolation space is them exhausted outside instead of recirculated through the main HVAC system. The negative air pressure pulls clean air into the room, keeps the air inside the isolation space, and prevents pathogens from escaping into surrounding areas. What are Isolation Rooms?Īirborne Infection Isolation Rooms (AIIRs) are single occupant hospital rooms designed to prevent the spread of contagious disease using negative pressure. As such, the Airborne Infection Isolation Room has been a key aspect of COVID-19 responses across hospitals and healthcare systems. Throughout the COVID-19 pandemic, healthcare facilities have needed to rapidly expand their isolation room capacity, since the safest way to handle the virus is to quarantine it in an isolation room.
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