Measurement of Tissue Gas Levels with a Mass Spectrometer
The measurement of oxygen levels in tissue is a difficult task. Polarographic electrodes are not suited for determining the mean tissue gas partial pressures of tissue masses larger than a few cubic mm. The delicacy of electrodes also interferes with their use in clinical situations. A new instrument, the medical mass spectrometer, offers opportunities for a more reliable, consistent measurement of tissue gas levels in vivo. This machine is specifically designed to quantitate gases with molecular weights ranging from 10 to 60 amu (atomic mass units) and to display these gas levels in terms of partial pressures.
KeywordsPermeability Catheter Dioxide Cage Sponge
Unable to display preview. Download preview PDF.
- 1.Davies, P. W. The oxygen cathode. In Ed. W.L. Nastuk. Physical Techniques in Biol. Res. Vol 4, pp. 137–179. Academic Press, NY, ‘62.Google Scholar
- 2.Hunt, T.K., Zederfeld, B., Goldstick, T.K. Oxygen and Healing. Amer. J. Surg. Vol 118, Oct. ‘69; 521–525.Google Scholar
- 3.Silver, I.A. The measurement of oxygen tension in healing tissue. Int. Sym. on Oxygen Pressure Recording Progr. Resp. Res. Vol 3, ‘69; 125–135.Google Scholar
- 4.Lubbers, D. W. The meaning of the t issue oxygen distribution curve and its measurement by means of Pt electrodes. Int. Sym. on Oxygen Pressure Recording Prog. Resp. Res. Vol 3, pp 112–123, 1969.Google Scholar