移动换药车换药前后细菌污染状况调查

目的调查移动换药车换药前后细菌污染状况。方法采用现况调查方法,分别于2016年3月23日—6月26日和2017年8月8日—9月13日对某院整形烧伤病房的一辆换药车进行采样,换药车使用前、后及消毒静置3h后分别于车把手、抽屉把手和车顶层采样,进行细菌培养,并计算单位面积细菌菌落数,比较不同采样时机菌落数差异。结果本研究共采样303份,其中换药前样本90份,换药后样本123份,消毒静置3h后样本90份。不同采样时机换药车顶层菌落数比较,差异有统计学意义(P=0.003);组间比较结果显示,换药后车顶层菌落数较换药前及消毒静置3h后均增加(均P0.05)。不同换药时机车把手、抽屉把手菌落数比较,差异均无统计学意义(均P0.05)。相同采样时间点换药车各部位间菌落数比较,差异均无统计学意义(均P0.05)。换药前换药车3个部位的样本合格率均为100.00%,换药后车把手、抽屉把手和车顶层样本合格率分别为100.00%、97.56%和97.56%,3个部位消毒静置3h后样本合格率也均为100.00%。结论移动换药车采用的物体表面消毒方法可达到我国医院消毒卫生标准对于II类环境物体表面的卫生标准,换药车消毒后在3h内移动使用基本安全。

Bacterial contamination of dressing change trolley before and after dressing change

ObjectiveTo investigate bacterial contamination of dressing change trolley before and after dressing change. MethodsOn site survey method was adopted, a dressing change trolley in the plastic and burn ward in a hospital was taken specimens from March 23, 2016 to June 26, 2016 and from August 8, 2017 to September 13, 2017, respectively. The handle, the drawer handle and the top layer of dressing change trolley were taken specimens before and after dressing change trolley was used, as well as when it was at a resting state for 3 hours after disinfection. Specimens were performed bacterial culture, number of bacterial colonies per unit area was calculated, difference in the number of colonies at different specimen taken opportunities was compared. ResultsA total of 303 specimens were collected, including 90 specimens before dressing change, 123 specimens after dressing change, and 90 specimens at a resting state for 3 hours after disinfection. There was a significant difference in the number of bacterial colonies on the top layer of dressing change trolley at different specimen taken opportunities (P=0.003)；group comparison showed that the number of bacterial colonies on the top layer increased after dressing change than before dressing change and at a resting state for 3 hours after disinfection (both P<0.05). There was no significant difference in the number of bacterial colonies on the handle and drawer handle of dressing change trolley at different dressing change opportunities (all P>0.05). There was no significant difference in the number of bacterial colonies among different parts of dressing change trolley at the same specimen taken opportunities (all P>0.05). The qualified rates of three parts of dressing change trolley were all 100.00%, qualified detection rates of handle, drawer handle, and top layer of dressing change trolley were 100.00%, 97.56%, and 97.56% respectively，qualified detection rates of three parts at a resting state for 3 hours after disinfection were all 100.00%. ConclusionSurface disinfection can meet the hygienic standard for disinfection for class II surface health standards in hospitals in China, it is basically safe to use the dressing change trolley within 3 hours after disinfection.