Surgical mask covering of N95 filtering facepiece respirators: The risk of increased leakage
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 کاملEffect of surgical masks worn concurrently over N95 filtering facepiece respirators: extended service life versus increased user burden.
Growing concern over the availability of Respiratory protective devices (eg, filtering facepiece Respirators), in the face of the probable extreme demand brought on by a pandemic influenza, has prompted the suggestion that useful life of N95 filtering facepiece Respirator can be extended by the concurrent use of a surgical mask as an outer protective barrier over the Respirator. Personal protec...
متن کاملTotal inward leakage of nanoparticles through filtering facepiece respirators.
Nanoparticle (<100 nm size) exposure in workplaces is a major concern because of the potential impact on human health. National Institute for Occupational Safety and Health (NIOSH)-approved particulate respirators are recommended for protection against nanoparticles based on their filtration efficiency at sealed conditions. Concerns have been raised on the lack of information for face seal leak...
متن کاملPenetration of fiber versus spherical particles through filter media and faceseal leakage of N95 filtering facepiece respirators with cyclic flow.
This study investigated differences in penetration between fibers and spherical particles through faceseal leakage of an N95 filtering facepiece respirator. Three cyclic breathing flows were generated corresponding to mean inspiratory flow rates (MIF) of 15, 30, and 85 L/min. Fibers had a mean diameter of 1 μm and a median length of 4.9 μm (calculated aerodynamic diameter, d(ae) = 1.73 μm). Mon...
متن کاملComparing the protective performances of 3 types of N95 filtering facepiece respirators during chest compressions
OBJECTIVE Healthcare providers in emergency departments should wear respirators for infection protection. However, the wearer's vigorous movements during cardiopulmonary resuscitation may affect the protective performance of the respirator. Herein, we aimed to assess the effects of chest compressions (CCs) on the protective performance of respirators. METHODS This crossover study evaluated 30...
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ژورنال
عنوان ژورنال: Infection Control & Hospital Epidemiology
سال: 2021
ISSN: 0899-823X,1559-6834
DOI: 10.1017/ice.2021.50