医用辐射防护服细菌污染现况检测分析

Detection and analysis of bacterial contamination status quo in medical radiation protective garments

目的了解不同材质、不同存放环境医用辐射防护服的细菌污染情况,为医用辐射防护服清洁管理提供相关依据。方法抽取某三甲综合医院各类手术间铅制、非铅制2种医用辐射防护服各25件,共50件,第1阶段,进行辐射防护服表面细菌检测;第2阶段,将50件辐射防护服分别放置在介入手术室数字减影血管造影(DSA)机房旁辐射防护服放置点(清洁区)和CT机房辐射防护服放置点(污染区),对比两处放置点空气菌落分布情况和防护服外表面细菌污染情况。结果第1阶段结果显示,有12件防护服被检出细菌菌落(总污染率24%),其中,铅制防护服4件;2种防护服表面细菌污染情况比较,组间差异无统计学意义(χ^(2)=0.987,P>0.05)。第2阶段,介入手术室DSA机房旁辐射防护服放置点5个采样点的空气菌落1处为5株、2处为2株、其余2处均为4株;CT机房辐射防护服放置点5个采样点的空气菌落2处1株、其余3处均为0株。2处放置点防护服外表面细菌污染情况比较,组间差异无统计学意义(χ^(2)=0.764,P>0.05)。结论各医院对辐射防护服采用常规清洁、通风悬挂的管理方式即可达到满意效果。

Objective To understand the bacterial contamination situation of medical radiation protective garments with different materials and different storage environments,to provide a relevant basis for the cleaning management of medical protective garments.Methods Fifty pieces of medical radiation protective garments made of lead(n=25)and nonlead(n=25)were selected from a 3A general hospital.In the first stage,the bacteria on the surface of garments were detected.In the second stage,50 pieces of radiation protective garment were placed at the garment placement point in the intervention operating room(clean area)and the garment placement point in the CT room(polluted area)respectively.Then,the distribution of bacterial colonies in the air and bacterial contamination on the surface of protective garments were compared between the two places.Results The results in the first stage showed that the bacterial colonies were detected in 12 pieces of protective garment(the total pollution rate was 24%),including 4 pieces of the protective garment made of lead;there was no statistically significant difference of bacteria contamination on the surface of the two kinds of protective garments(χ^(2)=0.987,P>0.05).In the second stage,the air colonies of 5 sampling points at the garment placement point in the interventional operating room were 5 strains in 1 point,2 strains in 2 points,and 4 strains in the other 2 points;The air colonies of 5 sampling points of CT machine room were 1 strain in 2 points,and there was no strain in the other 3 points.And there was no statistically significant difference in bacterial contamination on the outer surface of protective garments between the 2 place points(χ^(2)=0.764,P>0.05).Conclusion Each hospital adopts the management mode of routine cleaning,ventilation and hanging can achieve satisfactory results.