Abstract
目的 了解新生儿重症监护室(NICU)内进行医疗活动总人数及不同医疗护理活动对空气细菌菌落数的影响. 方法采用空气自然沉降法观察每小时空气细菌菌落数,同时记录相应时间病室内总人数及其活动内容,并研究其影响因素及它们之间的相关性. 结果两次观察的17组室内空气细菌菌落数的最高值为(1447±38) cfu/平板,最低值为(205±14) cfu/平板,均值为(500±22) cfu/平板,中位数为346.经过对不同分类因素相应细菌菌落数之间差异u检验及相关系数检测,病室内细菌菌落数的改变与人员流动数呈良好的正相关性(r=0.78, P<0.01),病室内不同活动内容中,技术员做检查(r=0.77, P<0.01)及护理活动(r=0.64, P<0.01)相关性大,差异有显著性;而与洁净器的开关状态相关性极差(r=-0.20,P=0.36). 结论空气细菌菌落数与室内人员总数、室内进行检查操作和护理活动关系密切.洁净器的使用与室内空气细菌菌落数之间的关系有待进一步研究。
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