Objective To compare germicidal effect of three disinfectants acting on frequently-touched surfaces in Intensive Care Unit (ICU) at different time points after disinfection so as to put forward the reasonable disinfection method and interval before the next disinfection. Methods We wiped the four frequently-touched surfaces in ICU with disinfectant containing acidic electrolyzed oxidizing water (EOW) from the building system of hospital, disinfectant wipes, and 500 mg/L chlorine respectively. The culture samples were collected from the surfaces before wiping, and 10 minutes, 30 minutes, 1 hour, 2 hours and 4 hours after wiping respectively. The bacterial clearance rate and the qualified rate of bacterial colony counts on the surfaces were compared among the three different disinfectants at different time points after disinfection. Results The bacterial killing rate of three methods for disinfection of object surfaces decreased with the passing of time. The bacterial killing rate of EOW from the building system of hospital was lower than that of the other two methods at all five time points after disinfection (P< 0.05). The bacterial killing rate at hour four after disinfection using chlorine-containing disinfectant and disinfectant wipes was higher than 90.0%. The qualified rate of bacterial colony counts on the surfaces at 10 and 30 minutes after disinfection among the three groups was not significantly different (P>0.05). The qualified rate of bacterial colony counts on the surfaces disinfected by EOW from the building system of hospital was lower than that in the other two groups at the other three time points (P<0.05), and it was totally unqualified at hour four after disinfection. Conclusions The germicidal effect of EOW from the building system of hospital is inferior to chlorine disinfectant and disinfectant wipes. Moreover, the surface can be easily recontaminated after disinfection. It is suggested that EOW should be used in ICU every other hour. and the other two disinfection methods should be used every two hours.
目的:探讨甲型H1N1流感患者安全转运中的消毒措施和防护流程。方法:对我国首例甲型H1N1流感患者转运的各个环节,包括工作人员的个人防护、车辆要求、物品消毒规范和操作流程进行分析。结果:应对首例甲型H1N1流感突发疫情的能力得到提高,转运顺利,安全将该例甲型H1N1流感患者接回医院,在转运过程中无交叉感染情况发生。结论:严格的消毒措施、规范的着装,以及有效的监督等措施,是我们面对突发疫情应急工作任务时,防止防止交叉感染的关键。
In order to promote the implementation of the three standards of central sterile supply department (CSSD), new standards for cleaning and disinfection/sterilization of flexible endoscope, dental instruments, and environmental surface in healthcare, this article elaborates about central management of CSSD; management of loaners and implants; technique of autoclave sterilization, ethylene oxide sterilization, and hydrogen peroxide sterilization; high level disinfection or sterilization of flexible endoscope; disinfection and sterilization of dental instruments; daily and enhanced cleaning and disinfection of environmental surface in healthcare facilities. This could help clinical healthcare workers to implement these new standards, effectively prevent nosocomical infection, and guarantee the personal safety of patients.
Objective To study the disinfection effect of hand disinfectants containing alcohol after heating, and the comfortable feeling of using warm disinfectants among the medical staff in operation rooms. Methods Between November 2016 and January 2017, we analyzed the disinfection effect of two alcohol-containing hand disinfectants after heating in operation rooms through on-the-spot disinfection and inspection. Questionnaire was used to investigate the comfortable feeling of using warm hand disinfectants. Results After standing for 7 days at a temperature of 37℃, the major content of the two disinfectants decreased by less than 10%. Three minutes of disinfection by using the two kinds of disinfectants had an average natural-bacteria killing logarithm higher than 1.00, and they both had a qualified disinfection effect. Moreover, 96.7% of the medical personnel believed that warm disinfection products were more comfortable. Conclusion After heating, the two kinds of alcohol-containing hand disinfectants are effective in hand disinfection and more comfortable to use, which can improve hand hygiene compliance in surgical staff.
This article reviews the current status and characteristics of disinfection technologies in the modern era, including physical, chemical, and integrated disinfection methods. It focuses on the latest research advances, advantages, and limitations of novel disinfection technologies, such as plasma-activated systems, photocatalytic oxidation, and synergistic chemical-physical or bio-chemical composite techniques. The study reveals that single disinfection methods often fail to meet the demands of complex environments, while integrated technologies demonstrate significant advantages in improving disinfection efficiency and environmental compatibility. However, challenges remain in terms of cost, standardization, and long-term safety. Future development of disinfection technologies should prioritize intelligent multi-technology integration, green and sustainable practices, targeted disinfection, personalized applications, and international standardization.
ObjectiveTo investigate the disinfection effect of dry-fogging hydrogen peroxide (DFHP) on ambulance inner surfaces.MethodsThis study was carried out using simulated field test and field test from October to December 2018. In the simulated field test, the carriers with Geobacillus stearothemopilus (ATCC12980) spores were placed in 6 places in the ambulance, and disinfected for 60 minutes with DFHP of 0.38–0.72 g/m3. The carriers were cultured for up to 7 days to observe whether the bacteria were eliminated. Before and after the DFHP disinfection, the microbial sampling of the surface in the ambulance was carried out, and the colonies were counted after the cultivation.ResultsThe eliminating rate of the bacteria carriers on the uncovered surface was 100% (20/20), and that of the covered surface was 10% (1/10). The pass rate of microbial sampling was 100% (26/26).ConclusionsThe DFHP had a significant decontamination effect on the ambulance inner uncovered surfaces. The DFHP equipment is automated and their disinfecting quality is consistent, therefore it is suitable for the disinfection of ambulance inner surfaces. But the limitation of disinfection effect on covered surfaces should be avoided.
供应室消毒工作是预防和控制医院感染的必要手段，加强对化学消毒剂的严格管理和合理使用又是取得最佳消毒效果的重要保证。因此在消毒剂的选择和使用上应加强管理，严格把关