医用氧气湿化瓶细菌污染情况调查与控制措施

Survey of bacterial contamination of medical oxygen humidifying containers and control measures

目的分析医用氧气湿化瓶细菌污染情况,并评价控制细菌污染的措施。方法随机选择256只3种状态的氧气湿化瓶,检测污染率、分析细菌分布情况。根据分析情况实施控制措施并进行细菌污染率复查。结果细菌污染率为44.52%,三组细菌污染率之间差异有统计学意义(P<0.01),三组检出菌落数之间差异有统计学意义(P<0.01)。三组均以革兰阴性细菌污染为主,三组污染细菌分布之间差异有统计学意义(P<0.05)。复查细菌污染率为27.67%,与此前结果比较差异有统计学意义(P<0.05)。结论医用氧气湿化瓶细菌污染率较高,以革兰阴性菌为主,通过加强消毒、无菌操作、及时更换设备用品可有效降低细菌污染率。

Objective To analyze bacterial contamination of medical oxygen humidifier bottles,and evaluate control measures.Methods All 256 three states of the oxygen humidifier bottles were randomLy selected,figured out pollution detection rate,and analysised of bacterial distribution.According to the analysis,implement of control measures and to review the rate of bacterial contamination.Results The contamination rate was 44.52%,the rate of the three groups were significantly different（P〈0.01）,the number of colonies detected between the three groups was significantly different（P〈0.01）.It was mainly Gram-negative bacterial contamination in three groups,the distribution of bacterial contamination between three types was significant different（P〈0.05）.The bacterial contamination rate in reexamination was 27.67%,which was significantly different（P〈0.05） with the previous result.Conclusion Medical oxygen humidifier bottles had a higher rate of bacterial contamination,which mainly was Gram-negative bacteria.The rate can be effective reduce by strengthening of disinfection,aseptic technique,the timely replaceing equipment.