Download Clinical Oxygen Pressure Measurement: Tissue Oxygen Pressure by D. W. Lübbers (auth.), Professor Dr. med. Albrecht M. Ehrly, PDF

By D. W. Lübbers (auth.), Professor Dr. med. Albrecht M. Ehrly, Professor Dr. Jan Hauss, Professor Dr. Renate Huch (eds.)

In January 1980, the 1st Symposium at the size of Tis­ sue Oxygen strain in sufferers was once held in Frankfurt. After a 4-year "rest period," the organizers of the 1984 symposium, Profes­ sor R. Huch of Zurich and Dr. J. Hauss of Munster, including myself, prolonged one other invitation to come back to Frankfurt to determine what had long past on within the box of oxygen strain dimension and its program in scientific medication. because the following displays will express, the applying of oxygen strain measurements has been broadened significantly. in addition, technological advances were made, really with the elevated use of pcs. for numerous purposes, together with technical ones, those tools haven't been tailored as commonly as one would wish. even supposing con­ gresses on tissue oxygen strain were held within the previous few years, the medical point of tissue P0 dimension has now not been 2 handled in this sort of focused and accomplished approach considering 1980. It accordingly appeared essential to carry the sort of symposium, not just for medical purposes, but additionally to allow a bigger crew of clini­ cians to realize perception into the significance of the chances those equipment offer.

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Extra resources for Clinical Oxygen Pressure Measurement: Tissue Oxygen Pressure and Transcutaneous Oxygen Pressure

Sample text

The measuring signal dropped the most during continuous and small-step movement of the electrode without withdrawal. The measuring signal was altered less when the electrode was advanced in larger steps and then withdrawn. According to light and scanning electron microscopic investigations in liver, muscle, and brain, the electrode causes morphological changes in the tissue of all of these organs. These changes vary from organ to organ, depending on the geometry of the electrode, the puncturing technique, and the conditions and duration of the experiment.

Appl. Physiol. 48 (1980) 737-741 32. , S. W. Korsner, C. P. Winlove: Problems associated with the micropolarographic measurement of the arterial wall P02• Cardiovasc. Res. 16 (1982) 448-456 33. Brezina: Polarographic determination of oxygen in biological materials. In: J. ): Medical and Biological Applications of Electrochemical Devices. John Wiley & Sons, New York (1980) pp173-261 34. , AKunze: Das Sauerstoffdruckfeld in der Muskulatur-Messung mit Platin-Stichelektroden. In: AM. ): Messung des Gewebesauerstoffdruckes bei Patienten.

22 H. - , N £ / ~ ~ 0. kf 5 o / / L / / / / / / ~ o· ~/ / V a / I • maximum (calculated! • minimum (calculated! • measured H2037°C / 1,=4 n F r. 1m! 200 I n =190 electrodes QI ~ :> 11/ =E 1HB 1F- Vtg 1840601151 300 ~ b ~ ~ a. k >--. 3a, b. Measured and theoretically expected O2 reduction currents in water (37°C) from flat, bare, circular Pt cathodes in dependence on cathode diameter. Measured and standardized O2 reduction currents in Theorell buffer from bare, recessed needle electrodes in dependence on the ratio recess length/cathode diameter.

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