Effect of upper strap downward displacement on N95 filtering facepiece respirator fit factors: a pilot study

Details

• Personal Author:
  Kim J-H ; Liu Y ; Palmiero AJ ; Roberge RJ ; Zhuang Z
• Description:
  Fifteen subjects underwent three replicates of quantitative respirator fit testing with N95 filtering facepiece respirators that were donned with the upper strap high on the occiput, as per the manufacturers' donning instructions. Each fit test was immediately followed by repeat fit testing with the upper strap downwardly displaced to the level of the ear sulcus in order to determine any change in fit factors that might occur with upper strap downward slippage. A total of 35/45 (78%) initial fit tests had a passing score (fit factor >/ =100) with the top strap high on the occiput and 33/35 (94%) of these passed subsequent fit testing after the top strap was displaced downward to the ear sulcus. Geometric mean fit factors for the initial passed fit tests, and following downward strap displacement, were 217 + / - 1.6 and 207 + / - 1.9, respectively (p = 0.64). Downward displacement of the top strap did not significantly impact fit factors of N95 FFRs that had previously passed fit testing. [Description provided by NIOSH]
• Subjects:
  Laboratories Occupational Health Personal Protective Equipment Quality Control Respiratory Protective Devices Respiratory System Safety
• Keywords:
  Air-purifying-respirators Anthropometry Author Keywords: Displacement Equipment-design Equipment-reliability Face-masks Fit Factors Humans Laboratory-testing N95 Filtering Facepiece Respirators Performance-capability Personal-protective-equipment Quality-control Quantitative-analysis Respirators Respiratory-equipment Testing-equipment Top Strap

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• ISSN:
  1545-9624
• 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:
  338-341
• Volume:
  11
• Issue:
  5
• NIOSHTIC Number:
  nn:20043505
• Citation:
  J Occup Environ Hyg 2014 May; 11(5):338-341
• Contact Point Address:
  Raymond J. Roberge, MD, MPH, National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 18070, Pittsburgh, PA 15236, USA
• Email:
  dtn0@cdc.gov
• Federal Fiscal Year:
  2014
• NORA Priority Area:
  Healthcare and Social Assistance
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:454ba94f8c2d72fed2ffbfb0b7bb854db16dd9c9f3d9a30dd27dd4deaafe343c9d8292ce7502a7ae2e35a85b56a1ffd1ce14264f688b4eed02a7a11f6f01f0c5
• Download URL:
  https://stacks.cdc.gov/view/cdc/195392/cdc_195392_DS1.pdf
• File Type:
  [PDF - 198.74 KB ]