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

摘要： 目的　通过使用四种消毒产品对CT检查床进行消毒，以比较其消毒效果、物体表面细菌菌落以及经济使用成本，从而为临床采取方便、有效、便捷、经济的消毒方式提供参考。方法　2020年4月至2021年1月对菏泽医学专科学校附属医院、菏泽市立医院、菏泽市定陶区人民医院的CT检查床表面采用季铵盐消毒湿巾擦拭（样本量199个）、75%乙醇擦拭（样本量194个）、500 mg/L含氯消毒剂擦拭（样本量180个）、床单位消毒机（样本量82个）进行物体表面消毒，比较消毒后的消毒效果、CT检查床表面细菌菌落数，并分析四种消毒方式的经济使用成本。多个样本之间的比较Kruskal-Wallis检验；计数资料以率表示，采用χ²检验。结果　季铵盐消毒湿巾擦拭、75%乙醇擦拭、500 mg/L含氯消毒剂擦拭、床单位消毒机进行物体表面消毒的消毒合格率分别为98.99%（197/199）、98.45%（191/194）、99.44%（179/180）、100.00%（82/82），差异无统计学意义（χ²=1.882，P=0.597），四种消毒产品的消毒效果差异无统计学意义；四种消毒产品消毒后细菌菌落数分别为0.1（0.3）cfu/cm²、0.6（1.0）cfu/cm²、1.0（0.7）cfu/cm²、0.0（0.1）cfu/cm²，细菌清除效果差异有统计学意义（H=17.857，P<0.05），清除效果从高到低依次为床单位消毒机、季铵盐消毒湿巾、75%乙醇、500 mg/L含氯消毒剂；经济使用成本不同，从高到低依次为床单位消毒机（22.00元/次）>75%乙醇=500 mg/L含氯消毒剂（1.74元/次）>季铵盐消毒湿巾（1.25元/次）。结论　综合比较，季铵盐消毒湿巾具有消毒效果可靠、操作简单方便、节省时间且使用成本较低等优点，可在医院内推广使用。

关键词: 医疗机构, 消毒产品, CT检查床, 清洁, 消毒