The Dreaded 3-Minute Wait: Does It Really Prevent Operating Room Fires? The IGNITE Trial

Area of Science:

• Surgical Safety
• Biomedical Engineering
• Infection Control

Background:

• Operating room fires pose significant risks, necessitating preventative measures.
• Limited literature exists on recommended waiting periods after alcohol-based antiseptic use before patient draping.
• Clarifying these guidelines is crucial for reducing operating room fire hazards.

Purpose of the Study:

• To investigate the fire risk associated with alcohol-based surgical antiseptics.
• To determine the necessary waiting period after antiseptic application before electrosurgery or open flame exposure.
• To evaluate manufacturer recommendations for antiseptic drying times.

Main Methods:

• An ex vivo porcine model was used to test two common alcohol-based surgical antiseptics.
• Simulated surgical sites were prepped and exposed to electrosurgery (PURE CUT and COAGULATION modes) and open flames.
• Testing occurred at various power settings and time intervals post-application, following manufacturer prep guidelines.

Main Results:

• Ignition was not observed with PURE CUT mode on hairless skin at any time point.
• COAGULATION mode and open flame caused ignition up to 1 minute post-application, especially if the site appeared wet.
• Average drying time for antiseptics was approximately 59 seconds; pooling increased fire risk.

Conclusions:

• Visible wetness of the antiseptic, not just the mode of electrosurgery, is a key factor in ignition.
• Current manufacturer recommendations for waiting times may be unnecessarily long, leading to wasted time.
• Further research is needed to balance fire prevention with the antimicrobial efficacy of surgical antiseptics.