How to do fumigation in operation theater?

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Fumigation in an operating theater is a process of using gas or fumes to kill bacteria, viruses, and other microorganisms that may be present in the air or on surfaces in the operating room. This is done to reduce the risk of infection and ensure that the operating theater is sterile. 

There are several types of fumigants that may be used in the OR, including hydrogen peroxide, ozone, and chlorine dioxide. These fumigants are highly effective at killing microorganisms, and they can be used to decontaminate the air and surfaces in the OR.

Methods of fumigation :

Electric boiler fumigation method : For each 1000 cubic feet of the volume of operation theater 500 ml of formaldehyde(40%solution) added in 1000 ml of water in an electric boiler. Switch on the boiler, leave the room & seal the door . After 45 minutes switch off the boiler without entering in to the room.

Potassium permanganate method : For every 1000 cubic feet add 450 gm of KMnO4 to 500 ml of formaldehyde . Take this mixture in  about 5-8 bowels and allow them to auto boil & generate fumes . After generation of formaldehyde vapor, immediately leave the room & seal it for at least 48 hours.

Here are the steps for fumigating an operating theater:
  • Close all doors and windows in the operating theater, and turn off any ventilation or air conditioning systems.
  • Place fumigation tablets or liquid in a container, such as a vaporizer or fogger. These tablets or liquid will release gas or fumes when activated.
  • Turn on the fumigation device and allow it to run for the recommended amount of time, according to the manufacturer's instructions.
  • After the fumigation process is complete, ventilate the operating theater by opening windows and doors and turning on the ventilation or air conditioning systems.
  • Wipe down all surfaces in the operating theater with a disinfectant solution to remove any residue from the fumigation process.
  • Test the air quality in the operating theater using a gas monitor or other testing device to ensure that it is safe for us.
  • Fumigation frequency depends on:
  • 1. If cases exceeds 15 in 24 hour  
  •   2- Any infectious case     
  •  3- After 1 week
It is important to follow all safety precautions when fumigating an operating theater, as some fumigants can be toxic to humans. Wear protective clothing, such as a mask and gloves, and follow the manufacturer's instructions carefully to ensure the safe and effective use of the fumigant.

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