Door Opening Affects Operating Room Pressure During Joint Arthroplasty.

@article{Mears2015DoorOA,
  title={Door Opening Affects Operating Room Pressure During Joint Arthroplasty.},
  author={Simon C. Mears and Renee Blanding and Stephen M. Belkoff},
  journal={Orthopedics},
  year={2015},
  volume={38 11},
  pages={
          e991-4
        }
}
Many resources are expended to ensure a sterile operating room environment. Efforts are made to prevent exposure of patients to personnel and to achieve positive room pressure to keep out airborne contaminants. Foot traffic into and out of the operating room during surgery can undermine these efforts. The authors investigated the number and duration of operating room door openings during hip and knee arthroplasty procedures and the effect of the door openings on room pressure. They tested the… 

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TLDR
It is demonstrated that the simple addition of “restricted access” signs on the outside and inside of OR doors produced a significant reduction (p < 0.001) in OR traffic during primary TJA.

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