Background. Despite endoscope reprocessing, residual droplets remain in gastrointestinal endoscope working channels. Inadequate drying of gastrointestinal endoscope working channels may promote microbial reproduction and biofilm formation, increasing the risk of infection in patients. This review was designed to provide the current status of gastrointestinal endoscope drying, emphasize the importance of gastrointestinal endoscope drying, and evaluate the effectiveness of different drying methods of gastrointestinal endoscope in reducing residual droplets and microbial growth risk. Methods. A systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting checklist. The PubMed, Web of Science, Medline, EMBASE, EBSCO, CNKI, CQVIP, and Wanfang Data databases were searched from 2010 to 2020 to identify eligible articles focused on methods of gastrointestinal endoscope drying and the status of endoscope drying. The following key points were analyzed: type of intervention, amount of residual droplets, major microbial types, and effectiveness of biofilm intervention. JBI quality assessment tool was used to determine bias risk for inclusion in the article. Results. This review included twelve articles. Two of the articles reported lack of drying of gastrointestinal endoscopes while the other ten reported residual droplets, microbial growth, and biofilm formation after different methods of drying. Four articles reported 0 to 4.55 residual droplets; four articles reported that the main microbial types were cocci and bacilli, most commonly Staphylococcus, Escherichia coli, Bacillus maltophilia, and Pseudomonas aeruginosa; and two reported that drying could effectively reduce biofilm regeneration. The type of intervention is as follows: automatic endoscopy reprocessor (AER), manual compressed air drying, and the Dri-Scope Aid for automatic drying and drying cabinet. Conclusions. While endoscope reprocessing may not always be effective, an automatic endoscope reprocessor plus the Dri-Scope Aid with automatic drying over 10 min or storage in a drying cabinet for 72 h may be preferred.

中文翻译：

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干燥对胃肠道内窥镜再处理中残留液滴、微生物和生物膜的有效性：系统评价

背景。尽管内窥镜再处理，残留液滴仍留在胃肠内窥镜工作通道中。胃肠道内窥镜工作通道干燥不充分可能会促进微生物繁殖和生物膜形成，增加患者感染的风险。本综述旨在提供胃肠镜干燥的现状，强调胃肠镜干燥的重要性，并评估胃肠镜不同干燥方法在减少残留飞沫和微生物生长风险方面的有效性。方法. 根据系统评价和元分析 (PRISMA) 报告清单的首选报告项目进行系统评价。从 2010 年到 2020 年，检索了 PubMed、Web of Science、Medline、EMBASE、EBSCO、CNKI、CQVIP 和万方数据数据库，以确定关注胃肠镜干燥方法和内窥镜干燥状态的合格文章。分析了以下关键点：干预类型、残留液滴数量、主要微生物类型以及生物膜干预的有效性。JBI 质量评估工具用于确定纳入文章的偏倚风险。结果. 这篇综述包括十二篇文章。其中两篇报道了胃肠内窥镜干燥不足，而另外十篇报道了不同干燥方法后残留的液滴、微生物生长和生物膜形成。四篇文章报告了 0 到 4.55 个残留液滴；四篇文章报道了主要的微生物类型是球菌和杆菌，最常见的是葡萄球菌、大肠杆菌、嗜麦芽芽孢杆菌和铜绿假单胞菌。; 两个报告说干燥可以有效地减少生物膜的再生。干预的类型如下：自动内窥镜再处理器（AER）、手动压缩空气干燥和用于自动干燥和干燥柜的 Dri-Scope Aid。结论。虽然内窥镜再处理可能并不总是有效，但自动内窥镜再处理器加上 Dri-Scope Aid 自动干燥超过 10 分钟或在干燥柜中存放 72 小时可能是首选。