The reliability and physiological significance of continuous non-invasive PO2 recording by means of skin electrodes was studied by comparing simultaneous tracings from different skin areas in a series of 40 newborns with normal labor and birth. A new measuring equipment - the Radiometer prototype unit TPM 1 - was used. In addition, the applicability of the method to the fetus was tested in a primary series of 11 labor cases. Certain technical and physiological factors that can influence the tracings were identified.
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Jacobson et al. (1977) studied this question.
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