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In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

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Door Opening Affects Operating Room Pressure During Joint Arthroplasty.

Simon C Mears, Renee Blanding, Stephen M Belkoff

|November 13, 2015

Summary

Operating room door openings during surgery can compromise sterile environments. Frequent and prolonged door openings disrupt positive room pressure, potentially allowing airborne contaminants into the operating room.

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Area of Science:

Healthcare
Infection Control
Surgical Environment

Background:

Maintaining a sterile operating room (OR) environment is crucial for patient safety.
Positive room pressure is a key strategy to prevent airborne contamination.
Operating room traffic, including door openings, can challenge sterile protocols.

Purpose of the Study:

To investigate the frequency and duration of OR door openings during hip and knee arthroplasty.
To assess the impact of door openings on maintaining positive OR pressure.
To determine if door openings compromise the sterile environment.

Main Methods:

Electronic monitoring of OR door status and room pressure during 191 hip and knee arthroplasty procedures.
Unobtrusive data collection with OR staff unaware of monitoring.
Regression analysis to evaluate the relationship between door openings and room pressure.

Main Results:

OR doors were open for an average of 9.5 minutes per procedure.
Positive pressure was lost in 77 out of 191 cases.
Total door open time significantly impacted minimum room pressure, but not average pressure.

Conclusions:

Operating room door openings frequently disrupt positive pressure, risking contamination.
Transient pressure loss indicates the room can recover, but repeated breaches are a concern.
Reducing OR traffic and door openings is essential to maintain sterility and patient safety.