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In Line Monitoring of Carbon Dioxide Via a Gas Permeable Window

  • D. T. Delpy
  • D. Parker
  • D. N. Halsall
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 200)

Abstract

The concept of monitoring oxygen tension in a bypass loop, by using an oxygen sensor placed against a gas permeable “window” incorporated into the loop, has been previously reported by the authors1. This system is now in routine clinical use (Cardiomet 1000, Orange Medical Instruments, High Wycombe, England). This technique has several clinical advantages. Firstly, the sensor is separated from the circulating fluid by a sterile barrier and need not therefore be sterile. Secondly, the sensor can be removed from its connector at any time to allow the calibration to be rechecked without jeopardising loop sterility. Finally, since the oxygen sensor is provided with its own diffusion membrane, calibration is easily performed using air and a zero solution.

Keywords

Oxygen Sensor Carbon Dioxide Concentration Ferric Sulphate Diffusion Membrane Lead Glass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    D. Parker, P.T. Delnv and D.N. Nalsall, A new approach to in-line gas monitoring: development of an oxygen sensor, Med. & Biol. Fngng & Comp. 21: 131–137 (1983).Google Scholar
  2. 2.
    J.W. Severinghaus and A.F. Bradley, Electrodes for blood PO2 and PCO2 determinations, J. Annl. Physiol. 13: 515–520 (1958).Google Scholar

Copyright information

© Plenum Press, New York 1986

Authors and Affiliations

  • D. T. Delpy
    • 1
  • D. Parker
    • 1
  • D. N. Halsall
    • 1
  1. 1.Department of Medical Physics and BioengineeringUniversity College HospitalLondon WC1UK

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