荆门市某综合医院口腔科门诊环境质量调查和消毒措施评价

Investigation on Environmental Quality and Disinfection Measures in a General Hospital Outpatient Department of Stomatology in Jingmen

目的了解口腔科门诊空气质量、物体表面和医疗物品的污染状况,比较现使用消毒法消毒效果。方法监测口腔科门诊的诊室空气、综合治疗椅治疗台面和涡轮手机的进行细菌菌落总数,将结果进行统计分析。结果在开诊后数小时内,口腔科门诊空气和综合治疗椅治疗台面的细菌总数呈现不断增高趋势,当上午诊疗活动结束后检测3个诊室内空气和综合治疗椅控制面板的细菌总数远远超过开诊前,诊室内空气、物体污染较严重。使用自然通风净化法和循环风紫外线空气消毒法分别作用1 h后,3个诊室内空气细菌总数明显下降(P<0.05),但两种空气消毒方法之间比较没有明显统计学差异(P>0.05)。使用1%单过硫酸氢钾消毒液拭综合治疗椅治疗台面,作用5 min后细菌总数明显下降。涡轮手机每接诊1个病人,其表面及内部细菌总量远高于使用前,环氧乙烷消毒法可完全杀灭各类细菌。结论口腔科门诊诊室环境在诊疗过程中极易受污染而引起院内感染。现使用的消毒方法均能有效减低口腔科诊室空气、物体表面和医疗物品的细菌总数,达到国家相关标准要求。

Objectives To study air quality,contamination on the surface of objects and medical equipment in an outpatient department of stomatology,and to compare the effectiveness of different disinfection measures,in order to provide scientific basis for the prevention of iatrogenic infections. Methods Monitoring the counts of bacteria in the air,on the treatment table of comprehensive treatment chair and turbine handpiece in the outpatient department of stomatology,and analyzing statistical results. Results After accepting patients for a few hours in the outpatient department of stomatology,the counts of bacteria in the air and on the treatment table of comprehensive treatment chair showed a trend of increasing,and the situation was far more serious by the end of diagnosis and treatment activity in a whole morning. Using a ventilation with natural air method and a circulated ultraviolet air disinfection method for 1 hour,the counts of bacteria in the air of three outpatient departments of stomatology decreased significantly,but no significant difference between the two air disinfection methods was observed（P 〉0. 05）. Wiping the treatment table of comprehensive treatment chair with 1% single potassium persulfate disinfectant,the counts of total bacteria decreased significantly after 5 minutes. The total counts of bacteria on the surface and inside of turbine hand-pieces was much higher after use. All kinds of bacteria could be completely killed by ethylene oxide sterilization method. Conclusions The environmental quality of outpatient department of stomatology during the process of diagnosis and treatment was vulnerable to be polluted. Total counts of bacteria in the air of an outpatient department of stomatology could be reduced effectively by the disinfection methods mentioned above to reach the relevant national standards.