Study the comparison of the Laryngeal mask and laryngoscope sterilization by two methods of disinfection with Ultra-high-level solution

Document Type: Original Article


Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran



Background: Control of transmission of infections in anesthetic tools in the operating room is one of the special priorities in health care centers because of continuous contact with oral contaminated discharge any ill. This study evaluated the effectiveness of Ultra solution with two different methods of disinfection in the microbial control of anesthetics equipment.
Materials and Methods: In this laboratory research used of four different microbial samples in the airways; Staphylococcus aurous, Escherichia coli, Acinetobacter, Candida albicans. Then, two anesthetic tools; laryngoscope and laryngeal mask, were immersed in prepared suspensions from these germs. In the following, we disinfected two anesthetic instruments by immersion and conventional washing with an Ultra-solution. After disinfection, sampling was taken from the surface of both devices. Samples collected were cultured on two media of Blood Agar and Chocolate Agar. After 48 hours at 37 ° C, we examined plates for microbial growth.
Findings: In this study observed no colony of Staphylococcus aureus and E. coli and Candida albicans yeast on cultivation environment with sterilization by two methods and high level solution and no Acinetobacter colony from immersion sterilization method but a colony of this bacterium was found in normal washing.
Conclusion: Dipping method of disinfection is a standard and reliable method which can sterilize properly. Normal washing process is not a reliable process for sterilization.


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