Efficacy of different concentrations of chloride-containing disinfectants on disinfection of infant incubator:a comparative study

OBJECTIVE To compare different concentrations of surface disinfectants applied in clinic for infant incubator without laboratory data,so as to find the minimal effective concentration of chlorine-containing disinfectant for infant incubator.METHODS The normal used infant incubators were divided randomly into group A(n=42) and B(n=45) for terminal disinfection,and available chlorine contents were 500 mg/L for group A,250 mg/L for group B.Fixed points in each incubator were sampled for bacteria culture before and after disinfection to compare disinfection effect.RESULTS The positive rates of bacteria culture of the incubators were all 100.0% before disinfection,19.0% in group A and 20.0% in group B after disinfection,there was statistically significance between two groups(χ2=0.0125,P0.05).Microbiological detection qualification rates were 95.2% in group A and 93.3% in group B,there was statistically significance between two groups(χ2=0.00767,P0.05).CONCLUSION On the basis of infant incubator being kept clean in grade Ⅱ circumstance,the two different concentrations of chlorine-containing disinfectant have the same excellent terminal disinfection efficacy,but lower concentrations of chlorine-containing disinfectant are more suitable for terminal disinfection on infant incubator because of its lower corrosiveness on incubator and less pollution on air.