Impact of multiple consecutive donnings on filtering facepiece respirator fit
Impact of multiple consecutive donnings on filtering facepiece respirator fit
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DOI：
10.1016/j.ajic.2011.05.003
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发表时间：
2012-05-01
影响因子：
4.9
通讯作者：
Shaffer, Ronald E.
中科院分区：
文献类型：
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作者：
Bergman, Michael S.;Viscusi, Dennis J.;Shaffer, Ronald E.
背景：重复使用经美国国家职业安全与健康研究所认证的 N95 过滤式面罩呼吸器 (FFR) 的一个问题是，多次佩戴可能会对 FFR 部件造成压力，从而损害贴合性。本研究调查了多次佩戴对 6 个 N95 FFR 型号面罩贴合度的影响，每个型号由 10 名经验丰富的测试对象组成。方法：所有测试均使用 TSI PORTACOUNT Plus 和 N95 Companion 配件。通过标准职业安全与健康管理局适合性测试合格后，受试者使用修改后的方案对单个 FFR 样本进行最多 20 次连续测试。对所有 6 个 FFR 模型组合导致合身因子 (FF) > 100 的穿戴百分比进行回归分析。结果：回归分析显示穿戴组 1-10、1-15 和 1-20 具有统计显着性。对于佩戴组 1-5，FF >= 100 的平均佩戴百分比为 81%-93%，但对于佩戴组 16-20，该比例下降至 53%-75%。结论：我们的结果表明，多次佩戴对所评估的 6 个 N95 型号的贴合度产生依赖于型号的影响。数据表明，在 FF 持续降至 100 以下之前，可以连续佩戴 5 次。由 Elsevier Inc. 代表感染控制和流行病学专业人员协会发布。
Background: A concern with reuse of National Institute for Occupational Safety and Health-certified N95 filtering facepiece respirators (FFRs) is that multiple donnings could stress FFR components, impairing fit. This study investigated the impact of multiple donnings on the facepiece fit of 6 N95 FFR models using a group of 10 experienced test subjects per model.Methods: The TSI PORTACOUNT Plus and N95 Companion accessory were used for all tests. After qualifying by passing a standard Occupational Safety and Health Administration fit test, subjects performed up to 20 consecutive tests on an individual FFR sample using a modified protocol. Regression analyses were performed for the percentage of donnings resulting in fit factors (FFs) > 100 for all 6 FFR models combined.Results: Regression analyses showed statistical significance for donning groups 1-10, 1-15, and 1-20. The mean percentage of donnings with an FF >= 100 was 81%-93% for donning group 1-5, but dropped to 53%-75% for donning group 16-20.Conclusions: Our results show that multiple donnings had a model-dependent impact on fit for the 6 N95 models evaluated. The data suggest that 5 consecutive donnings can be performed before FFs consistently drop below 100. Published by Elsevier Inc. on behalf of Association for Professionals in Infection Control and Epidemiology, Inc.