机械通气中呼吸机湿化罐液体更换时间的探讨

Study on the replace time of breathing machine humidification pot liquid in mechanical ventilation

目的:探讨机械通气中呼吸机湿化罐液体的更换时间。方法:将33例机械通气患者随机分为观察组和对照组,观察组采用7d更换呼吸机湿化罐液体,对照组采用每天更换呼吸机湿化罐液体,分别每天对2组的湿化罐液体采样进行细菌培养。结果:观察组采集样本119例,有细菌生长3例(2.5%);对照组采集样本112例,有细菌生长15例(13.4%)。结论:呼吸机湿化液频繁更换可能造成细菌污染,7d更换湿化液的细菌污染率明显低于每天更换湿化液的细菌污染率。

Objective：To study on the best replacement time of breathing humidification pot liquid in mechanical ventilation.Methods：33 mechanical ventilation patients were randomly divided into observation group and control group,in the observation group the humidification pot liquid were replaced 7 days,while in a control group were replaced every day,all liquid samples were cultured for bacteria.Results：119 samples collected in observation group have 3 cases with positive bacterial growth（2.5%）,while 112 samples collected in control group have 15 cases with positive bacterial growth（13.4%）.Conclusion：Replace humidification pot liquid of breathing machine everyday may cause bacterial pollution more easily than they were replaced in 7 days interval.