Investigation on Effect of Dynamic Disinfection Room and Correlation Factors

Objective To explore the effect of air disinfection with KangaKing sterilization and cleaning instrument in operation room when staff were on the scene and affecting factors.Methods Discontinuous air disinfection with KangaKing sterilization and cleaning instrument was done an hour before operation.The self-sedimentation methods with plate were adopted.The samples of an hour before disinfection(7 am) and different times in post-disinfection such as 7:15,2 h(9 am),3 h(10 am) and 4 h(11 am) were selected.The quantity of bacteria could be calculated according to the colony forming units(CFU) in the plates.Results The CFU of bacteria in operation room air could be reduced to less than 58.3 CFU/m3 with sterilization and cleaning instrument.The CFU of bacteria in operation room air were less than 83.9 CFU/m3 within an hour before operation was began when the staff were continuous movement,and were controlled less than 150.7 CFU/m3 along with the prolongation of the dynamic disinfection time.The average kill rate of natural bacteria was 86.16%.Conclusions The Kanga King sterilization and cleaning instrument could be continual used to disinfect the air in operation room when staffs were on the scene.It could significantly reduce the CFU of bacteria and overcame the disadvantage in the traditional static disinfection methods which staff could not be the operation room the same time.Controlling the number of staff and movement could reduce the degree of air pollution.The small environment in operation room could improve the effect of dynamic disinfection.