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.
ObjectiveTo systematically review the safety of hand disinfectants. MethodsPubMed, EMbase, The Cochrane Library, INAHTA, WanFang Data, CNKI and VIP databases were electronically searched to collect studies on the safety of hand disinfectants from inception to February 1st, 2021. Two reviewers independently screened the literature, extracted data and assessed the risk of bias of the included studies; then, a systematic review was conducted. ResultsA total of 50 studies were included. The reported adverse events were eye and nasal mucosal irritation, hand adverse events with skin itching, rash, erythema, edema and so on. A total of 29 brands such as 3M Avagard and 26 ingredients such as ethanol were reported to be related to the above adverse events. Hand disinfectants containing glycerin, silicone oil, vitamin B, plant extracts and other emollients could reduce the incidence of adverse events. ConclusionCurrent evidence shows that hand disinfectants containing emollients and free from ethanol, chlorhexidine and other ingredients are related to fewer adverse events. Due to the limited quality and quantity of the included studies, more high-quality studies are needed to verify the above conclusion.
ObjectiveTo understand the economic burden of disinfection supply to medical institutions in Yibin City, and explore the feasibility of establishing a regional centralized management model of disinfection supply center in Yibin City.MethodsFrom April to May 2018, 263 medical institutions in the eight counties and two districts of Yibin City were investigated by means of mobile phone application-designed questionnaire, to obtain the information of cost accounting and economic burden of disinfection supply.ResultsThere were 263 medical institutions involved in the survey, in which 61 (23.19%) had set up the central sterile supply department (CSSD), including 43 public hospitals and 18 private hospitals; 202 medical institutions were without CSSD, which were mainly secondary hospitals [195 (74.14%), including 120 public hospitals and 75 private hospitals]. The higher the hospital level was, the larger the average area of the CSSD was; the difference was statistically significant (χ2=40.009, P<0.001). The higher the hospital level was, the more full-time personnel were employed, and the difference was statistically significant (χ2=31.862, P<0.001), and the care staff were the majority (66.23%). The cost burden of CSSD was more than 1 million yuan in the tertiary hospitals, which was 100 000 yuan or above in 61.90% of the secondary hospitals, and was below 100 000 yuan in hospitals below secondary level. The higher the hospital level was, the higher the total cost burden became; the difference was statistically significant (χ2=37.995, P<0.001). ConclusionIn view of the heavy economic burden of CSSD in medical institutions and the unbalanced setting up of medical institutions below secondary level, the establishment of a regional CSSD centralized management model is a new direction, new trend, and new model for future development, which is conducive to improving the quality of disinfection and sterilization, reducing medical care costs, making rational use of health resources, effectively preventing hospital infections, and ensuring the medical safety.
The quality of disinfectant, disinfection devices and disposable medical devices is closely related to the patients' safety. Hospital infection management department must carry out the audit responsibilities for qualification documents of disinfectant, disinfection devices and disposable medical devices, to guarantee legality, safety and effectiveness of products used in hospital. This paper mainly introduces the implementation of qualification documents audit in West China Hospital, Sichuan University, including system construction, process reengineering, documents audit scope and key points, and document management.
ObjectiveTo evaluate the effect of disinfection measures in the isolation ward of ICU in severe patients infected with the Omilkerong variant of the new coronavirus, and to optimize the infection control measures. MethodsReferring to the patient's epidemiological and nucleic acid sample data, nucleic acid sampling was performed on the isolated ward environment by surface sampling method, and the nucleic acid Ct value of virus was detected by parallel fluorescence PCR method. The aerosol was collected by a wet-wall cyclone sampler, and the nucleic acid Ct value of the virus was detected by parallel fluorescence PCR. ResultsBefore daily disinfection, SARS-CoV-2 positive samples were found on the surface of the patient's ward and air sampling after the tracheoscopic tracheostomy. No positive samples of SARS-CoV-2 were found on the surface of articles and air in the patient's ward after daily disinfection. ConclusionThe daily disinfection measures of the hospital can achieve the effect of SARS-CoV-2 disinfection, which suggests that the surface of the articles in the ward after invasive operations such as tracheostomy and tracheoscopy, especially within 2 meters of the tracheostomy and the tracheostomy, is the key part of disinfection, which needs to be paid attention to.
