Results 131 to 140 of about 5,790 (162)
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Simulated Workplace Performance of N95 Respirators
AIHA Journal, 1999During July 1995 the National Institute for Occupational Safety and Health (NIOSH) began to certify nine new classes of particulate respirators. To determine the level of performance of these respirators, NIOSH researchers conducted a study to (1) measure the simulated workplace performance of 21 N95 respirator models, (2) determine whether fit-testing
Ziqing Zhuang +2 more
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Decontaminating N95 Respirators for Reuse in a Hospital Setting
Healthcare Quarterly, 2021With the global outbreak of the COVID-19 pandemic, hospitals in Canada and around the world have been forced to consider conservation strategies to ensure continued availability of personal protective equipment (PPE) for healthcare providers. To mitigate critical PPE shortages, Sinai Health System (Sinai Health), a large academic healthcare institution
Tabitha A, Chiu +3 more
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Survival of Mycobacteria on N95 Personal Respirators
Infection Control & Hospital Epidemiology, 1999AbstractObjectives:The overall aim of this study was to investigate the survival and possible growth of Mycobacterium tuberculosis simulant bacteria on respirator filters.Methods:Mycobacterium smegmatis was used as a biochemical simulant for M tuberculosis. Bacterial survival was tested on National Institute for Occupational Safety and Health-certified
T A, Reponen +3 more
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N95 Filtering Facepiece Respirator Deadspace Temperature and Humidity
Journal of Occupational and Environmental Hygiene, 2012The objective of this study was to determine the levels of heat and humidity that develop within the deadspace of N95 filtering facepiece respirators (N95 FFR). Seventeen subjects wore two models each of N95 FFR and N95 FFR with an exhalation valve (N95 FFR/EV) while exercising on a treadmill at a low-moderate work rate for 1 and 2 hr in a temperate ...
Raymond J Roberge
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Thermal Burden of N95 Filtering Facepiece Respirators
The Annals of Occupational Hygiene, 2012Increased thermal perceptions that affect comfort are a leading reason for intolerance to wearing respiratory protective equipment. Despite their popularity and use for decades, relatively little is known about the thermal burden imposed by the use of N95 filtering facepiece respirators (FFR) at normal work rates. Twenty healthy subjects exercised at a
Raymond, Roberge +2 more
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Review of the Effect of Continuous Use and Limited Reuse of N95 Respirators on Respirator Fit
Journal of the International Society for Respiratory Protection, 2021Background: Coronavirus disease 2019 (COVID-19) has led to severe shortages of filtering facepiece respirators (FFRs). As a result, extended use, limited reuse, and FFR decontamination have been utilized to extend the life of single-use FFRs. Although some studies have raised concerns that reuse could affect the FFR’s ability to form a seal, no ...
Berger, Daniel +5 more
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In vivo protective performance of N95 respirator and surgical facemask
American Journal of Industrial Medicine, 2006AbstractBackgroundThe SARS outbreak in 2003 has spawned a major controversy concerning protective performance facemasks for healthcare workers. This study reports a study on in‐vivo protective performance of surgical masks and N95 respirators.MethodsTypical surgical masks and N95 respirators used in Hong Kong hospitals were tested in comparison with ...
Yi Li, Thomas Kwok-Shing Wong, J Y Hu
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Workplace Protection Factors for an N95 Filtering Facepiece Respirator
Journal of Occupational and Environmental Hygiene, 2007This study evaluated the workplace performance of an N95 filtering facepiece, air-purifying respirator in a steel foundry. Air samples were collected inside and outside respirators worn by workers who were properly trained and qualitatively fit tested. For most workers, three or four pairs of air samples were collected on each of 2 days.
Larry L, Janssen +2 more
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Fitting Characteristics of Eighteen N95 Filtering-Facepiece Respirators
Journal of Occupational and Environmental Hygiene, 2004Four performance measures were used to evaluate the fitting characteristics of 18 models of N95 filtering-facepiece respirators: (1) the 5th percentile simulated workplace protection factor (SWPF) value, (2) the shift average SWPF value, (3) the h-value, and (4) the assignment error.
Christopher C, Coffey +5 more
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Performance of N95 Respirators: Reaerosolization of Bacteria and Solid Particles
AIHAJ, 1997If a respirator does not contain an exhalation value, and the respirator wearer sneezes or coughs, one may expect previously collected particles to be reaerosolized. This may be of special concern in environments contaminated with airborne microorganisms.
Y, Qian +3 more
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