What is the main source of airborne bacteria in the operating room?

The main source of airborne bacteria in the operating room is primarily exfoliated skin particles from OR staff. During surgical procedures, staff and personnel can shed skin cells, which can carry bacteria. These microscopic skin flakes can enter the air and potentially contaminate the sterile environment. This shedding becomes more significant in a space where procedures are taking place and where there is increased movement and activity.

While medical equipment, ventilation systems, and the adherence to aseptic techniques can influence the overall sterility and bacterial load in the room, they do not serve as the primary sources of airborne bacteria like skin particles do. Medical equipment is typically sterilized and designed to minimize bacterial contamination, and ventilation systems are engineered to filter air and reduce airborne particles. Aseptic techniques are crucial for maintaining cleanliness but do not produce airborne bacteria on their own.