Antibacterial Operating Room

Antibacterial Operating Room

An antibacterial operating room (AOR) is a surgical suite designed to minimize the presence of bacteria and other microorganisms. The goal of an AOR is to reduce the risk of surgical site infections (SSIs), which are infections that occur in the incision site after surgery.

AORs incorporate a number of features that go beyond those of a standard operating room, including:


  • Air filtration systems: High-efficiency particulate air (HEPA) filters are used to remove dust and microorganisms from the air.
  • Air pressure: The air pressure in the AOR is kept higher than the surrounding area to prevent air from flowing in from outside.
  • Airflow: Air is circulated in a unidirectional flow, from the ceiling to the floor, to prevent the spread of contaminants throughout the room.
  • Surfaces: Surfaces are made of smooth, easy-to-clean materials that are resistant to disinfectants.


  • Thorough cleaning of the OR before and after each surgery with high-level disinfectants.
  • Disinfection of all medical equipment and instruments before and after each surgery.
  • Handwashing and protective clothing for all OR personnel before entering the OR.

Other measures:

  • Limiting the number of people in the OR to only those essential for the surgery.
  • Restricting patients with infectious diseases from entering the OR.
  • Administering preventive antibiotics to some patients.

Benefits of AORs:

  • Reduced risk of SSIs
  • Faster patient recovery
  • Shorter hospital stays
  • Lower healthcare costs

Examples of technologies used in AORs:

  • Ultraviolet light disinfection systems
  • Ozone disinfection systems
  • Hydrogen peroxide disinfection systems

AORs are becoming increasingly common for certain types of surgery, particularly those that are at high risk of infection, such as joint replacement, heart surgery, and organ transplants.

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