A Standard Artificial Lung for System Calibration in Physiological Gas Exchange Measurement

  • S. L. Foster
  • A. C. Norton


The measurement of metabolic gas exchange in bags or balloons is direct and obvious; mixed expired gas is collected as the entire alveolar ventilation combined with the dead space ventilation. Recent approaches to automation of gas exchange measurement1,2,5,7,8,9 have in common the elimination of bags for collection of the entire expired sample; the approaches vary, but each method is susceptible to error in determination of the mixed expired gases or measurement of the entire volume or both. The typical calibration procedure is to calibrate the individual analyzers and transducers in the system separately using large calibration syringes, precision gases, etc. It is assumed that if the individual components have been calibrated, the system is calibrated. This paper describes a Standard Artificial Lung (SAL) for system calibration of metabolic measurements devices, and it presents the results of testing some of these systems.


System Calibration Inspire Volume Dead Space Ventilation Expire Minute Volume Metabolic Measurement Cart 
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Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • S. L. Foster
    • 1
  • A. C. Norton
    • 1
  1. 1.Physiological Measurements OperationsBeckman Instruments, Inc.AnaheimUSA

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