空气消毒对ICU护士口罩常见细菌的影响  

Effects of Air Disinfection on Bacteria form Nurse Mask in ICU

作　　者：于亮[1] 李秀梅[1] 苏晓燕[1] 丁迎晓[1] 张焕[1] 韩静[1] 

机构地区：[1]泰安市中心医院ICU,山东泰安271000

出　　处：《中华医院感染学杂志》2008年第2期229-231,共3页Chinese Journal of Nosocomiology

摘　　要：目的探讨重症监护病房(ICU)护士口罩常见细菌及空气消毒对其的影响。方法对60人次的口罩进行细菌菌落计数+培养+药敏试验,口罩佩戴时间分别为2、4、68、h;收集空气消毒前后的样本进行检测,同时进行病房空气的细菌菌落计数;分析同时期患者痰中检测的细菌类型及药敏试验结果。结果60人次中,耐甲氧西林葡萄球菌(MRS)的检出率为90.6%、大肠埃希菌的检出率为9.4%,空气消毒情况下佩戴2、4、6、8 h,口罩细菌菌落分别为(1.2±1.5)、(3.4±2.8)、(4.2±3.4)、(5.3±3.6)CFU/cm2,空气消毒前,空气细菌菌落为1264±314 CFU/m3;空气消毒2、4、6、8 h,细菌菌落分别为(917±213)(、790±176)、(676±179)(、483±167)CFU/m3;空气消毒后,口罩、病房空气细菌菌落较未消毒明显减少,同时期患者检测的12例次痰培养结果中,耐甲氧西林葡萄球菌检出率为26.7%,药敏试验结果与口罩检出菌药敏结果相同。结论耐甲氧西林葡萄球菌和大肠埃希菌存在于气溶胶之内,通过吸入引起交叉感染,有效的空气消毒可以减少空气当中病原菌的数量,减少吸入的危险性。OBJECTIVE To investigate and analyze the bacteria on the nurse mask in ICU ward and its air effects disinfection. METHODS Sixty masks were examined for the bacteria numbers, germicukure and drug resistance. The bacteria numbers on the mask were recorded in 2, 4, 6 and 8 h with or without air disinfection, and the numbers of air bacteria were also estimated before and after air disinfection 2, 4, 6 and 8 h. The kinds and drug resistance of bacteria in the sputum of patients were recorded during the examining time. RESULTS The metlcillinresistant Staphylococcus （MRS, 90.6%） and the Escherichia coli （ECO, 9.4%） were the major bacteria on the mask. The numbers of bacteria on the mask at 2, 4, 6 and 8 h with air disinfection were 1.2±1.5, 3.4±2.8, 4.2±3.4 and 5.3±3.6 CFU/cm^2 , respectively. The numbers of bacteria on the air before air disinfection were 1264±314 CFU/m^3 and after air disinfection 2, 4, 6 and 8 h were 917±213, 790±176, 676±179 and 483±167 CFU/m^3 , respectively. The numbers of bacteria on the mask and on the ward air were decreased obviously after the air disinfection comparing without disinfection. MRS was found in 26.7% patients sputum, and had the same drug-resistance spectrum as the bacteria on the mask. CONCLUSIONS MRS and ECO may be infected through air, and the effective air disinfection could reduce the numbers of bacteria on the air, and decrease the possibility of intercross infection.

关 键 词：空气消毒 耐甲氧西林葡萄球菌 重症监护病房 

分 类 号：R187[医药卫生—流行病学]