Probability of fit failure with reuse of N95 mask respirators
نویسندگان
چکیده
منابع مشابه
Evaluation of N95 Filtering Facepiece Respirators Challenged with Engineered Nanoparticles
NIOSH-certified respirators, including N95 respirators, are recommended when engineering and administrative controls do not adequately prevent exposures to airborne nanomaterials. Laboratory evaluations of filtering efficiency using standard test aerosols have been reported in the literature, but there is no information on penetration of engineered nanoparticles (1–100 nm) for N95 filtering fac...
متن کاملEvaluation of a quantitative fit testing method for N95 filtering facepiece respirators.
A method for performing quantitative fit tests (QNFT) with N95 filtering facepiece respirators was developed by earlier investigators. The method employs a simple clamping device to allow the penetration of submicron aerosols through N95 filter media to be measured. The measured value is subtracted from total penetration, with the assumption that the remaining penetration represents faceseal le...
متن کاملFacial anthropometric dimensions of Koreans and their associations with fit of quarter-mask respirators.
Past studies on respirator fit or performance have mostly been done for Whites or male subjects, and little attention has been paid to minorities and Asians. To fill this gap, this study was designed to provide facial anthropometric data for Koreans and to analyze the association between facial dimensions and respirator fit factors for three brands of quarter-mask respirators, two domestic and ...
متن کاملPractices of Japanese nurses for the preparation of N95 respirators.
A delay in the diagnosis of tuberculosis (TB) is a public health problem in Japan. This delay may increase the chance of a TB patient visiting in a medical institution without a TB ward. We evaluated the practices of nurses for fit testing and seal checking their N95 respirator masks at hospitals without tuberculosis wards in Kanagawa, Japan. Of 36 nurses who participated in a medical course on...
متن کاملHerd protection effect of N95 respirators in healthcare workers
Objective To determine if there was herd protection conferred to unprotected healthcare workers (HCWs) by N95 respirators worn by colleagues. Methods Data were analysed from a prospective cluster randomized clinical trial conducted in Beijing, China between 1 December 2008 and 15 January 2009. A minimum compliance level (MCL) of N95 respirators for prevention of clinical respiratory illness (CR...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 2020
ISSN: 0007-0912
DOI: 10.1016/j.bja.2020.06.023