新冠疫情下发热门诊不同方法空气动态消毒的效果评价

Evaluation of the application of dynamic disinfection of air in fever clinics under the coronavirus

目的探究新冠疫情下发热门诊使用不同方法对空气消毒的效果,并进行比较分析。方法选取4间发热门诊,分为实验组与对照组,每组各2间。实验组采用天使牌TSXG-100型壁挂式纯动态消毒机进行动态消毒,对照组采用紫外线灯进行消毒,对比两组消毒效果。结果实验组和对照组消毒后空气细菌菌落总数合格率分别为90.00%(18/20)和60.00%(12/20),差异有统计学意义(χ^(2)=4.800,P=0.0285);消毒后4 h空气菌落数分别为3.32和8.24cfu/10min,差异具有统计学意义(χ^(2)=4.2320,P=0.0397);消毒后4 h菌落消亡率分别为65.55%和19.61%,差异具有统计学意义(χ^(2)=43.7500,P=0.0000)。对照组消毒后的空气样品中分离出革兰阴性菌36株、革兰阳性菌113株、真菌56株;实验组消毒后的空气样品中分离出革兰阴性菌15株、革兰阳性菌21株,真菌17株。两组分离的主要病原菌均为铜绿假单胞菌、金黄色葡萄球菌,青霉菌属。结论动态空气消毒机对发热门诊空气动态消毒的效果显著,空气中病原菌数量显著减少,且效果更为持久,能满足门诊空气消毒要求。

Objective To explore the application effect of the air dynamic disinfection method in a dynamic environment,and to evaluate the application effect.Methods Four surgical clinics in this hospital were selected as observation objects.And divided into two experimental groups and two control groups.The experimental group used Angel brand TSXG-100 wall-mounted pure dynamic disinfection machine for dynamic disinfection,and the control group was disinfected with ultraviolet rays.The disinfection effects of the two groups were compared.The flat exposure method was used to take samples of bacteria in the air before and after disinfection.After sampling,each group carried out the isolation,culture and identification of bacteria and fungi in the air.Results The qualified rate of the total number of bacterial colonies in the air after disinfection in the experimental group and the control group were 90.00%(18/20)and 60.00%(12/20)respectively,the difference was statistically significant(χ^(2)=4.800,P=0.0285);after disinfection The number of colonies in the air at 4 h was 3.32 and 8.24 cfu/10 min,respectively,the difference was statistically significant(χ^(2)=4.2320,P=0.0397);the colony extinction rate at 4 h after disinfection was 65.55%and 19.61%,the difference was statistically significant(χ^(2)=43.7500,P=0.0000).In the air sample after UV disinfection,36 gram-negative bacteria,113 gram-positive bacteria,and 56 fungi were isolated.In the air sample of the dynamic disinfection group,15 gram-negative bacteria and gram-positive were isolated.21 strains of bacteria,the main pathogens in the air are Pseudomonas aeruginosa,Staphylococcus aureus,and the genus Mycobacterium.Conclusion The dynamic air disinfection machine has a significant effect on the dynamic disinfection of the air in fever clinics,and at the same time significantly reduces the pathogenic bacteria in the air,and the effect is more durable,which can meet the air disinfection needs of outpatients.