Resistance to synthetic blood penetration of National Institute for Occupational Safety and Health-approved N95 filtering facepiece respirators and surgical N95 respirators
| Autor: | Ronald E. Shaffer, Samy Rengasamy, Deborah Sbarra, Julian Nwoko |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
medicine.medical_specialty
business.product_category Respiratory Protective Device Epidemiology Economic shortage Article Occupational safety and health Food and drug administration Occupational Exposure medicine Humans Respiratory Protective Devices Respirator Aerosols Filter media business.industry Health Policy Masks Public Health Environmental and Occupational Health United States Surgery Surgical mask Infectious Diseases Emergency medicine business National Institute for Occupational Safety and Health U.S Filtration Clearance |
| Zdroj: | American Journal of Infection Control |
| ISSN: | 0196-6553 |
| Popis: | Background Surgical N95 filtering facepiece respirators (FFRs), certified by the National Institute for Occupational Safety and Health (NIOSH) as a respirator and cleared by the Food and Drug Administration (FDA) as a surgical mask, are often used to protect from the inhalation of infectious aerosols and from splashes/sprays of body fluids in health care facilities. A shortage of respirators can be expected during a pandemic. The availability of surgical N95 FFRs can potentially be increased by incorporating FDA clearance requirements in the NIOSH respirator approval process. Methods Fluid resistance of NIOSH-approved N95 FFRs, and FDA-cleared surgical N95 FFRs and surgical masks was tested using the ASTM F1862 method at 450 and 635 cm/sec velocities and compared with the results from a third-party independent laboratory. Blood penetration through different layers of filter media of masks were also analyzed visually. Results Four N95 FFR models showed no test failures at both velocities. The penetration results obtained in the NIOSH laboratory were comparable to those from the third-party independent laboratory. The number of respirator samples failing the test increased with increasing test velocity. Conclusions The results indicate that several NIOSH-approved N95 FFR models would likely pass FDA clearance requirements for resistance to synthetic blood penetration. |
| Databáze: | OpenAIRE |
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