The improvement of the cleaning and disinfection method for medical oxygen wet system.

OBJECTIVE To evaluate the shortcomings of the cleaning and disinfection method for medical oxygen wet system in hospital,and take corrective measures,and reduce the pollution.METHODS One hundred and twenty humidification bottles were divided into control and treated groups.After cleaning the humid bottles in both groups,the bottles were immersed in chlorine-containing 500 mg/L solution for 30 minute and were rinsed with distilled water,then the bottles in control group were dried for use.The treated group were dried by drying oven(65 ℃) for 60 minute.The humidification fluids in control group was distilled water,and in the treated group was sterilizing water.Samples in both groups were taken samples after cleaning and disinfection.RESULTS The contamination rate of the humidi bottles in the treated group was 0.83%,and in control group was 19.17%,and there was significant difference between them.The contamination rate of the humidification fluids in the treated group was 1.96%,and in control group was 21.57%,and there was significant difference between them(P0.01).CONCLUSIONS After cleaning and disinfection the humid bottles are dried by drying oven.The method can significantly degrade the contamination rate of oxygen wet system,and effectively control the occurrence of hospital infection.