Sterilization methods commonly used in operating room purification project include lactic acid fumigation, formaldehyde, peracetic acid fumigation, ultraviolet radiation sterilization, etc.
1. Lactic acid fumigation and disinfection: spray a small amount of water in the air before disinfection, and close doors and windows. According to each 100 m2 space with 80% lactic acid 12 ml, add equal amount of water, pour into the container, put alcohol lamp under the heating, until the liquid evaporation will extinguish the fire, blockade for 30 to 60 minutes, then turn on the ventilation. It is suitable for disinfection after general operation.
2. Formaldehyde and potassium permanganate disinfection: According to indoor volume calculation, 40% formaldehyde (formalin) 12 mL/m3, potassium permanganate 1 g. The relative humidity of the room should be above 60%, and the room temperature should be above 18 C. First put potassium permanganate in the container, then pour into the formaldehyde solution, that is, boiling to produce formaldehyde vapor, blockade for 6-12 hours, and then open the window for ventilation. It is suitable for disinfection of tetanus, gas gangrene and other special infections after operation. Shandong Operating Room Purification Factory
3. Peracetic acid fumigation method: peracetic acid 3.75ml/m3, placed in a heat-resistant container, heated and evaporated, room temperature should exceed 18 C, sealed for 1 to 2 hours. For air disinfection in operating room. Operation room, walls, doors and windows, air, operating table disinfection chemical disinfectants commonly used, such as 2% 1 3% to sue (phenol phenol) solution spraying, scrubbing, 5% peracetic acid 2.5mL/m3 spray, 0.05%, 0.1% new Jie Er or chlorhexidine solution spray, wipe and so on.
4. Ultraviolet radiation sterilization: Ultraviolet radiation is mainly suitable for air disinfection, in addition, it is used for surface disinfection of air-conditioning conduits and other objects. Ultraviolet radiation at 253.7 nm is commonly used in low-pressure mercury lamps. The irradiation dose of disinfection room should be calculated according to the indoor volume and distance from the lamp tube. The uniform irradiation dose is 1w/m3, the irradiation time is 30-60 minutes, 2-3 times a day. If the room is 30m3, a 30W ultraviolet lamp can be used, and the sterilization effect is better within 60-100cm of the interval light source.
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