Investigation of dynamic BTPS (body, temperature, pressure, saturated) correction factors for spirometric data, Final Report.

Details

• Personal Author:
  Hankinson, John L. ; Viola JO
• Description:
  Because it is often difficult to completely control ambient temperature, a study was conducted to investigate dynamic BTPS correction factors for spirometric data. A forced expiratory simulator system was heated to 37 degrees C and loaded with air saturated with water vapor. This air was then forced from the simulator into a dry rolling seal spirometer maintained at various ambient temperatures from 3 to 32 degrees C. Errors in FEV1 from assuming a constant BTPS correction ranged from 7.6 percent at 3 degrees to 2 percent at 23 degrees C. Errors in peak flow ranged from 14.3 percent at 3 degrees C to 4.9 percent at 23 degrees C. Differences between errors observed when saturated and dry air were forced into the spirometer indicate that water vapor condensation introduces an added heat load to the spirometer. The additional heat from water vapor condensation adds approximately one percent to the error in FEV1, particularly at lower temperatures. A model was developed to provide an estimate for a dynamic BTPS correction factor. [Description provided by NIOSH]
• Content Notes:
  in NTRL, no PDF
• Subjects:
  Air Movements Health Care Facilities Workforce And Services Hot Temperature Occupational Health Respiratory Function Tests Safety Solvents Temperature
• Keywords:
  Spirometry; Pulmonary-function-tests; Medical-equipment; Equipment-reliability; Measurement-equipment; Air-temperature; Temperature-effects; Vapors; Air-flow; Heat; Simulation-methods; Testing-equipment
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRDS - Division of Respiratory Disease Studies
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-91
• NIOSHTIC Number:
  nn:20000717
• NTIS Accession Number:
  PB83232058
• Citation:
  NIOSH 1980 Jan; :1-91
• Federal Fiscal Year:
  1980
• NORA Priority Area:
  Other Occupational Concerns
• Peer Reviewed:
  False
• Source Full Name:
  National Institute for Occupational Safety and Health
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7dc847c09aedf140bc731323e8446b4703641ae07d6ad9e7b7238120dab30b8f7dcaa9b938d34d035f87873a0fe7fec262d5d13dcaf290925445e82b6de3b57d
• Download URL:
  https://stacks.cdc.gov/view/cdc/245738/cdc_245738_DS1.pdf
• File Type:
  [PDF - 168.02 KB ]