Effect on Breathing Resistance of a Surgical Mask Worn over a N95 Filtering Facepiece Respirator

Details

• Personal Author:
  Landsittel DP ; Roberge MR ; Roberge RJ ; Vojtko MR ; Vojtko RJ
• Description:
  Concerns over potential shortages of filtering facepiece respirators in the face of a pandemic influenza have prompted suggestions that the use of a surgical mask as an outer barrier might prolong the useful life of the respirator, but the effect on breathing resistance of this tandem respiratory protection has not been scientifically evaluated. Utilizing pressure transducers coupled to a breathing mannequin programmed at low-to-moderate and moderate-to-high breathing volumes, the current study measured baseline inspiratory and expiratory pressures of N95 filtering facepiece respirators before and after placement of a surgical mask over the respirator. The use of a surgical mask concurrently with a N95 filtering facepiece respirator results in a statistically significant increase in breathing resistance over that of the respirator alone. [Description provided by NIOSH]
• Subjects:
  Aerosols Dust Occupational Health Particulate Matter Respiratory System Risk Assessment Risk Factors Safety
• Keywords:
  Aerosol-particles Author Keywords: N95 Filtering Facepiece Respirator Breathing Breathing-zone Breathing Resistance Dust-control-equipment Particle-aerodynamics Particulates Respiratory-equipment Risk-analysis Risk-factors Statistical-analysis Surgical Mask

  More +
• ISSN:
  0892-6298
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-8
• Volume:
  25
• NIOSHTIC Number:
  nn:20034098
• Citation:
  J Int Soc Respir Prot 2008 Mar; 25:1-8
• Contact Point Address:
  Raymond J. Roberge, MD, National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, 626 Cochrans Mill Road, P.O.Box 18070, Pittsburgh, PA 15236
• Email:
  dtn0@cdc.gov
• Federal Fiscal Year:
  2008
• Peer Reviewed:
  True
• Source Full Name:
  Journal of the International Society for Respiratory Protection
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:56fd3e435308c7f21e1253bc44242c458c69fc0bba37029c8c9759e9d42abfa55b311006900d346cb7380f31bb1c0945483af3030737e5c7361fcec93c2c0734
• Download URL:
  https://stacks.cdc.gov/view/cdc/189468/cdc_189468_DS1.pdf
• File Type:
  [PDF - 1.00 MB ]