Tzanidakis K, Choudhury N, Bhat S, Weerasinghe A, Marais J
North West London Hospitals NHS Trust, UK.
Ann R Coll Surg Engl. 2012 Apr;94(3):185-8. doi: 10.1308/003588412X13171221589937.
The otorhinolaryngology department at Northwick Park Hospital uses the Tristel wipes system for cleaning nasendoscopes in the outpatient clinics. This system uses chlorine dioxide as its only disinfectant. The manufacturer claims the system provides safe sterilisation of nasendoscopes. However, there appear to be no reports in the literature to date that evaluate the efficacy of this system in a clinical setting. The aim of this study was to evaluate the 'in use' efficacy of Tristel wipes in decontaminating nasendoscopes and to identify any significant contamination between cleaning and usage.
A total of 31 cleaning episodes were performed. Each cleaning episode included two swabs after cleaning the scopes, one from the tip and the other from the handle. Another two swabs from the same areas were also taken before application to the patient. The microbiology unit evaluated all swabs for bacterial, fungal and mycobacterial growth.
Overall, 123 swabs from 31 cleaning episodes were tested. None of the swabs taken from the tips (n=31) or handles (n=31) after cleaning with Tristel wipes developed any organism growth. Furthermore, none of the swabs taken from the tip of the scopes before using on patients (n=31) developed any growth. Of the 31 swabs taken from the handle before use, 3 developed significant staphylococcal growth.
In our study, the 'in use' efficacy of Tristel wipes in cleaning the scopes of bacteria, fungi and mycobacteria was 100%. Attention to hand hygiene and the use of gloves should be considered when handling the cleaned scopes to minimise the risk of contamination between cleaning and application to patients.
诺斯威克公园医院耳鼻喉科在门诊使用特里斯特尔擦拭系统清洁鼻内镜。该系统仅使用二氧化氯作为消毒剂。制造商声称该系统能对鼻内镜进行安全消毒。然而，迄今为止，文献中似乎没有报道评估该系统在临床环境中的效果。本研究的目的是评估特里斯特尔擦拭巾在净化鼻内镜方面的“实际使用”效果，并确定清洁与使用之间是否存在任何显著污染。
共进行了31次清洁操作。每次清洁操作在清洁鼻内镜后包括两根拭子，一根取自尖端，另一根取自手柄。在用于患者之前，还从相同区域采集了另外两根拭子。微生物学部门对所有拭子进行细菌、真菌和分枝杆菌生长情况评估。
总体而言，对31次清洁操作的123根拭子进行了检测。用特里斯特尔擦拭巾清洁后，从尖端（n = 31）或手柄（n = 31）采集的拭子均未出现任何微生物生长。此外，在用于患者之前从鼻内镜尖端采集的拭子（n = 31）均未出现任何生长。在使用前从手柄采集的31根拭子中，有3根出现了显著的葡萄球菌生长。
在我们的研究中，特里斯特尔擦拭巾在清洁鼻内镜细菌、真菌和分枝杆菌方面的“实际使用”效果为100%。在处理清洁后的鼻内镜时，应考虑注意手部卫生并使用手套，以尽量减少清洁与用于患者之间的污染风险。
