Objective To compare the efficacy of disposable compound double chain quaternary ammonium salt disinfectant wipes,75% alcohol gauze wipes and thermal disinfection on copper scraping plate. Methods The scraping plate used by the patients was randomly divided into three groups A,B and C by using a random number table.Group A was disinfected with disposable compound double chain ammonium salt disinfectant wipes for 2-3 minutes,and group B was sterilized with 75% alcohol gauze for 2-3 minutes,group C was sterilized with heat at 90℃ for 5 minutes.The disinfection effect was detected by ATP bioluminescence and bacterial culture. Results The qualified rate of the three disinfection methods was 100% by ATP biofluorescence detection.In the bacterial culture method,the qualification rate of group A and C was 100%,and that of group B was 92.9%.After disinfection,there was no statistically significant difference in the qualification rate of the three groups in ATP biofluorescence detection and bacterial culture colony count detection(χ2=2.726,P＞0.05). Conclusion The qualified rate of the three disinfection methods is good through the bacterial culture method.ATP bioluminescence method can be recommended as a reference method for on-site inspection of the cleaning and disinfection effect of medical instruments.
Key words
Disposable disinfectant wipes /
75% alcohol /
Thermal disinfection /
Copper scrapping plate /
Disinfection effect
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