关键词: 医疗机构, 消毒产品, CT检查床, 清洁, 消毒

Abstract: Objective　By using four disinfection products, to disinfect the CT examination beds, to compare their disinfection effects, bacterial colonies on the surfaces of the objects, and the economic cost, and to provide references for the convenient, effective, and economical disinfection method of clinical use. Methods　From April 2020 to January 2021, the CT examination bed surfaces at Hospital Affiliated to Heze Medical College, Heze Municipal Hospital and Dingtao District People's Hospital were wiped by quaternary ammonium disinfection wipes (199 samples), 75% alcohol wipes (194 samples), 500 mg/L chlorine disinfectant wiping (180 samples), and bed unit disinfection machine (82 samples) for surface disinfection. The disinfection effects after disinfection and the numbers of bacteria on the surfaces of the CT beds were compared, and the economic costs of the four disinfection methods were analyzed. The comparison between multiple samples was did by Kruskal-Wallis test; the counting data was expressed as a rate, and were compared by χ² test. Results　The qualified rates of quaternary ammonium disinfection wipes, 75% alcohol wipes, 500 mg/L chlorine disinfectant wiping, and bed unit disinfection machine were 98.99% (197/199), 98.45% (191/194), 99.44% (179/180), and 100.00% (82/82), respectively, with no statistical difference (χ²=1.882, P=0.597); and there was no statistical difference in the disinfection effects between the four disinfection products. The bacterial colony numbers after disinfection of the four disinfection products were 0.1(0.3) cfu/cm², 0.6(1.0) cfu/cm², 1.0(0.7) cfu/cm², and 0.0(0.1) cfu/cm², respectively, with a statistical difference (H=17.857, P<0.05); the removal effects from high to low were as below: bed unit disinfection machine, quaternary ammonium disinfection wipes, 75% alcohol, and 500 mg/L chlorine-containing disinfectant; the economic use costs from high to low were as below: bed unit disinfection machine (22.00 yuan/time) > 75% alcohol = 500 mg/L chlorine disinfectant (1.74 yuan/time) > quaternary ammonium disinfection wipes (1.25 yuan/time). Conclusion　After comparison, quaternary ammonium disinfection wipes have the advantages of reliable disinfection effect, simple and convenient operation, time saving, and low cost of use, and can be promoted in hospitals.

Key words: Medical institutions, Disinfection products, CT examination beds, Cleaning, Disinfection