[Criteria and validity of continuous measurement of pO2 and pCO2 in man].

After description of a method of continuous measurement of partial pressure of blood gases, the authors describe the technical difficulties : behaviour of the electrodes, problems associated with continuous measurement, and emphasise the influence of the method on the results, e.g. heparinisation, blood flow rate, quantity of blood consumed. The results obtained under suitable physiological conditions show the difficulty of interpretation of continuous measurement of gaseous parameters and show interest in short but significant function tests.