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Computerized spirometry using a portable microcomputer.

D J Hansen1, L W Whitehead, J A Foulke

  • 1Department of Environmental and Industrial Health, School of Public Health, University of Michigan, Ann Arbor 48109-2029.

American Industrial Hygiene Association Journal
|July 1, 1985
PubMed
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A portable spirometer system (PSPIRO) was developed for reliable field pulmonary function studies. This lightweight, computerized device accurately measures key metrics like FVC and FEV1, meeting epidemiologic standards.

Area of Science:

  • Pulmonary Medicine
  • Biomedical Engineering
  • Medical Device Technology

Background:

  • Field-based pulmonary function studies are crucial due to evolving standards.
  • There is a need for versatile, portable, and accurate spirometry equipment for on-site testing.

Purpose of the Study:

  • To introduce and describe the PSPIRO system, a novel portable spirometer.
  • To evaluate the system's capability to conduct reliable pulmonary function tests outside a traditional laboratory setting.

Main Methods:

  • Development of a lightweight, computerized portable spirometer system (PSPIRO) integrating a standard volumetric spirometer and a microcomputer.
  • Implementation of back extrapolation for precise initiation of forced expiratory maneuvers.
  • Utilization of a portable analog-to-digital interface (PLAD) for data conversion via RS-232C port.

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Main Results:

  • The PSPIRO system is compact and easily transportable by a single individual.
  • The system accurately performs tests including Forced Vital Capacity (FVC), Forced Expiratory Volume in 1 second (FEV1), and Forced Expiratory Volume in 3 seconds (FEV3).
  • Reproducibility checks confirm accuracy within acceptable epidemiologic standards for key pulmonary function ratios (FEV1/FVC).

Conclusions:

  • The PSPIRO system offers a reliable, accurate, and portable solution for conducting pulmonary function studies in field settings.
  • The developed system meets the demands for essential spirometry testing outside clinical environments.
  • The integration of a microcomputer and specialized interface enhances the utility of portable spirometry for epidemiological research.