Exposure Assessment by Physiologic Sampling Pump – Prediction of Minute Ventilation Using a Portable Respiratory Inductive Plethysmograph System

Details

• Personal Author:
  Freivalds A ; Groves WA ; Harper M ; Lee EG ; Lee L ; Lin M-I ; Slaven, James E.
• Description:
  A study was conducted to evaluate a portable respiratory inductive plethysmograph (RIP) as a means to estimate minute ventilation (E) for use in controlling the flow rate of a physiologic sampling pump (PSP). Specific aims were to: (1) evaluate the ability of the portable RIP system to measure E using a direct (individual) fixed-volume calibration method (Direct RIP model), (2) develop and evaluate the performance of indirect (group) regression models for E prediction using output data from the portable RIP and subject demographic characteristics (Indirect RIP model), and (3) compare E estimates from indirect and direct portable RIP calibration with indirect estimation models published previously. Nine subjects (19-44 years) were divided into calibration (n = 6) and test (n = 3) datasets and performed step-tests on three different days while wearing the portable RIP and breathing through a pneumotachometer (reference). Minute ventilation and portable RIP output including heart rate, breathing rate, and a motion index were recorded simultaneously during the 80 minute sessions. Calibration data were used to develop a regression model for E prediction that was subsequently applied to the test dataset. Direct calibration of the portable RIP system produced highly variable estimates of E (R2 = 0.62, average % error = 15 +/- 50) while Indirect RIP model results were highly correlated with the reference (R2 = 0.80-0.88) and estimates of total volume were within 10% of reference values on average. Although developed from a limited dataset, the Indirect RIP model provided an alternative approach to estimation of E and total volume with accuracy comparable to previously published models. [Description provided by NIOSH]
• Subjects:
  Chemistry Chemistry, Analytic Lung Occupational Health Personal Protective Equipment Respiratory Protective Devices Respiratory System Risk Assessment Risk Factors Safety Workplace

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• Keywords:
  Analytical-chemistry Analytical-methods Analytical-processes Mathematical-models Pulmonary-system Respiratory-equipment Respiratory-protection Respiratory-protective-equipment Risk-analysis Risk-factors Statistical-analysis Work-environment Workplace-studies

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• ISSN:
  1464-0325
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  10
• Issue:
  9
• NIOSHTIC Number:
  nn:20034602
• Citation:
  J Environ Monit 2008 Sep; 10(9):1179-1186
• Contact Point Address:
  William A. Groves, The Pennsylvania State University, University Park, PA 16802-5000
• Federal Fiscal Year:
  2008
• NORA Priority Area:
  Construction ; Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Environmental Monitoring
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:06487a8c20f5bdb3e99884db6a8df54f80fbd1bb2f634bcc026b6e76d3f1d7168403fd8b2ab8e3950fde9919f87031e3398d503607ec90969b67305a3be6c5cb
• Download URL:
  https://stacks.cdc.gov/view/cdc/186754/cdc_186754_DS1.pdf
• File Type:
  [PDF - 405.53 KB ]