N95 mask reuse in a major urban hospital: COVID-19 response process and procedure.
N95 mask reuse in a major urban hospital: COVID-19 response process and procedure.
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DOI：
10.1016/j.jhin.2020.07.035
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发表时间：
2020-10
期刊：
影响因子：
--
通讯作者：
Pierce GN
中科院分区：
文献类型：
--
作者：
Czubryt MP;Stecy T;Popke E;Aitken R;Jabusch K;Pound R;Lawes P;Ramjiawan B;Pierce GN
在严重急性呼吸综合征冠状病毒2型(SARS-CoV-2)大流行期间，一次性使用的N95口罩(NRM)短缺，促使医疗保健提供者和机构考虑回收NRM，以扩大有限的库存。通过对加拿大一家主要城市医院日常佩戴的NRM进行高压灭菌，评估潜在的再利用潜力。在使用2-8小时后从志愿者工作人员那里收集NRM，通过高压灭菌和PortaCount适合度测试来评估NRM的可重用性。开发了一个每天重新处理数百个NRM的工作流程。使用过的NRM在一次高压灭菌后通过了FIT测试，其中86%通过了第二次重复使用/高压灭菌周期。另一组使用过的口罩在高压灭菌前预热，通过了适合度测试。为了每天回收200-1000个NRM，制定了收集、灭菌和重新分配的程序，以将NRM处理过程中的颗粒雾化风险降至最低，拒绝显示明显磨损的NRM，并促进工作人员采用NRM。在12个收集周期中，NRM回收率从49%到80%不等。在大型医院和其他医疗机构中重复使用NRM是可行的。与未使用的NRM在10次高压灭菌循环后通过FIT测试的研究形成鲜明对比的是，我们表明，日常磨损大大降低了NRM的FIT，将重复使用限制在一个周期内，但仍使NRM库存增加了∼66%。这种再利用需要制定一项全面的计划，其中包括从一线工作人员到医院管理人员各级的沟通，以增加对NRM恢复的灭菌过程的收集、接受和遵守。
The shortage of single-use N95 respirator masks (NRMs) during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has prompted consideration of NRM recycling to extend limited stocks by healthcare providers and facilities. To assess potential reuse via autoclaving of NRMs worn daily in a major urban Canadian hospital. NRM reusability was assessed following collection from volunteer staff after 2–8 h use, sterilization by autoclaving and PortaCount fit testing. A workflow was developed for reprocessing hundreds of NRMs daily. Used NRMs passed fit testing after autoclaving once, with 86% passing a second reuse/autoclave cycle. A separate cohort of used masks pre-warmed before autoclaving passed fit testing. To recycle 200–1000 NRMs daily, procedures for collection, sterilization and re-distribution were developed to minimize particle aerosolization risk during NRM handling, to reject NRM showing obvious wear, and to promote adoption by staff. NRM recovery ranged from 49% to 80% across 12 collection cycles. Reuse of NRMs is feasible in major hospitals and other healthcare facilities. In sharp contrast to studies of unused NRMs passing fit testing after 10 autoclave cycles, we show that daily wear substantially reduces NRM fit, limiting reuse to a single cycle, but still increasing NRM stocks by ∼66%. Such reuse requires development of a comprehensive plan that includes communication across staffing levels, from front-line workers to hospital administration, to increase the collection, acceptance of and adherence to sterilization processes for NRM recovery.
DOI：
10.1080/15459624.2011.535710
发表时间：
2011-01-01
影响因子：
2
作者：
Birkner, Jeffrey S.;Kovalchik, Stephanie;Kennedy, Nola J.
通讯作者：
Kennedy, Nola J.