Surgical Mask Filter and Fit Performance

Details

• Personal Author:
  Brosseau LM ; Oberg T
• Description:
  BACKGROUND: Surgical masks have been used since the early 1900s to minimize infection of surgical wounds from wearer-generated bacteria. There is ongoing debate, however, whether surgical masks can meet the expectations of respiratory protection devices. The goal of this study was to evaluate the filter performance and facial fit of a sample of surgical masks. METHODS: Filter penetration was measured for at least 3 replicates of 9 surgical masks using monodisperse latex sphere aerosols (0.895, 2.0, and 3.1 microm) at 6 L/min and 0.075-microm sodium chloride particles at 84 L/min. Facial fit was measured on 20 subjects for the 5 masks with lowest particle penetration, using both qualitative and quantitative fit tests. RESULTS: Masks typically used in dental settings collected particles with significantly lower efficiency than those typically used in hospital settings. All subjects failed the unassisted qualitative fit test on the first exercise (normal breathing). Eighteen subjects failed the assisted qualitative fit tests; 60% failed on the first exercise. Quantitative fit factors ranged from 2.5 to 9.6. CONCLUSION: None of these surgical masks exhibited adequate filter performance and facial fit characteristics to be considered respiratory protection devices. [Description provided by NIOSH]
• Subjects:
  Biological Factors Hazardous Substances Health Personnel Occupational Health Particulate Matter Personal Protective Equipment Safety Workplace
• Keywords:
  Biohazards Biological-factors Biological-systems Biological-transport Health-care-personnel Mathematical-models Medical-personnel Particle-aerodynamics Particulate-sampling-methods Particulates Personal-protection Protective-measures Qualitative-analysis Quantitative-analysis Statistical-analysis Work-environment

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• ISSN:
  0196-6553
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Minnesota ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  276-282
• Volume:
  36
• Issue:
  4
• NIOSHTIC Number:
  nn:20033859
• Citation:
  Am J Infect Control 2008 May; 36(4):276-282
• Contact Point Address:
  Lisa M. Brosseau, ScD, University of Minnesota, School of Public Health, Division of Environmental Health Sciences, MMC 807, 420 Delaware St. SE, Minneapolis, MN 55455
• Email:
  brosseau@umn.edu
• Federal Fiscal Year:
  2008
• Performing Organization:
  University of Minnesota Twin Cities
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  American Journal of Infection Control
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d8bc37492bc644af4a0a435e78c569b7111bb1e20c0551f234e684d921a1603ab37772c6f535e7c4beee70f2849ff154193048d6dfb709185867ed147520b779
• Download URL:
  https://stacks.cdc.gov/view/cdc/189275/cdc_189275_DS1.pdf
• File Type:
  [PDF - 336.12 KB ]