手术室上层平射紫外线空气消毒效果的探讨

Analysis on the effect of upper-level flat ultraviolet radiation on air disinfecton in operating room

目的探讨普通手术室采用上层平射紫外线空气消毒的效果。方法在同一间微创介入手术室内履行正常保洁过程的同时,安装上层平射紫外线消毒机为试验组,未安装为对照组。记录在进行微创介入手术时室内医护人员数量,测臭氧浓度,并进行手术室空气采样。结果试验组与对照组的空气细菌菌落总数以及手术后1、2和5 h的细菌菌落数差异均无统计学意义。随着采样时间的增加,试验组和对照组空气中菌落数均呈增多趋势(r分别为0.702和0.650,P<0.05)。随着手术室内人数的增加,试验组和对照组空气中菌落数亦均呈增多趋势(r分别为0.851和0.797,P<0.01)。手术室内有人时,其空气采样均不合格;无人时采样合格率为76.92%(P<0.001)。结论上层平射紫外线消毒并不能显著减少室内沉降菌数量;缩短手术时间和规范手术室医护人员管理才是更重要的降低沉降菌措施。

Objective To explore the effect of upper-level flat ultraviolet irradiation on air disinfection in ordinary operating room.Methods In the same minimally invasive interventional operating room,while performing the normal cleaning process,the upper-level flat ultraviolet radiation system was installed as the experimental group and non-installation as the control group.The number of medical staff in the operating room during minimally invasive interventional surgery was recorded,the ozone concentration was measured,and air samplings in the operating room were performed.Results There were no statistically significant differences in the total number of bacterial colonies in the air between the experimental group and the control group,and the number of bacterial colonies at 1,2 and 5 h after surgery.With the increase of sampling time,the number of colonies in the air of the experimental group and the control group showed an increasing trend(r=0.702 and0.65,P<0.05).With the increase in the number of medical staff in the operating room,the number of colonies in the air in the experimental group and the control group also showed an increasing trend(r=0.851 and 0.797,P<0.01).When there were people in the operating room,all air samplings were unqualified;however,if there was no people,the qualified rate of samplings was 76.92%(P<0.001).Conclusion The upper-level ultraviolet disinfection can not significantly reduce the number of bacteria in the operating room;shortening the operation time and standardizing the management of medical staff in the operating room were the more important measures to reduce bacteria.