Supplementary Material for: International Observational Survey of the Effectiveness of Personal Protective Equipment during Endoscopic Procedures Performed in Patients with COVID-19

Introduction and Aims: This international survey was performed to evaluate the cumulative incidence of nosocomial novel coronavirus disease 2019 (COVID-19) among healthcare professionals during endoscopic procedures. Methods: We performed an international web-based self-reported questionnaire survey. Participants completed the questionnaires every week for 12 weeks. The questionnaire elicited responses regarding the development of COVID-19 and details of the personal protective equipment (PPE) used. Results: All 483 participants were included in the analysis. Participants had a mean age of 42.3 years and comprised 68.3% males. The geographic distribution of the study population was Asia (89.2%), Europe (2.9%), North and South America (4.8%), Oceania (0.6%), and Africa (1.5%). The most common endoscopy-related role of the participants was endoscopist (78.7%), and 74.5% had >10 years of experience. Fourteen participants had performed 83 endoscopic procedures in patients positive for COVID-19. During the mean follow-up period of 4.95 weeks, there were no cases of COVID-19 when treating COVID-19 positive patients. The most common PPE used by participants treating patients with COVID-19 was a surgical mask plus N95 mask plus face shield, goggles, cap, long-sleeved isolation gown, and single pair of gloves. The most common PPE used by participants treating patients without COVID-19 was a surgical mask, no face shield but goggles, cap, long-sleeved isolation gown, and single pair of gloves during all endoscopic procedures. Conclusions: The risk of COVID-19 transmission during any endoscopic procedure was low in clinical practice.引言与研究目的：本项国际性调查旨在评估内镜操作期间，医护人员的院内新型冠状病毒肺炎（COVID-19）累积发病率。 方法：本研究采用国际性网络自主填报问卷式调查方案，研究对象需连续12周、每周完成一次问卷调研。问卷内容涵盖新冠病毒感染发生情况，以及所使用的个人防护装备（personal protective equipment, PPE）的详细信息。 结果：本研究共纳入483名参与者完成数据分析。参与者平均年龄为42.3岁，其中男性占比68.3%。研究人群的地理分布为：亚洲（89.2%）、欧洲（2.9%）、南北美洲（4.8%）、大洋洲（0.6%）以及非洲（1.5%）。参与者中最常见的内镜相关岗位为内镜医师（78.7%），74.5%的参与者拥有10年以上的相关工作经验。共有14名参与者为新冠病毒检测阳性的患者实施了83例内镜操作。在平均4.95周的随访周期内，为新冠阳性患者实施操作期间未出现新冠感染病例。参与者为新冠阳性患者开展操作时，最常用的个人防护装备组合为：外科口罩+N95口罩+面屏、护目镜、帽子、长袖隔离衣及单层手套。而为非新冠患者实施所有内镜操作时，最常用的防护装备组合为：外科口罩、无面屏但佩戴护目镜、帽子、长袖隔离衣及单层手套。 结论：临床实践中，各类内镜操作期间发生新冠病毒传播的风险均较低。