The noninvasive measurement or determination of the partial pressure (tension) of oxygen and/or carbon dioxide locally in the capillaries of a tissue by the application to the skin of a special set of electrodes. These electrodes contain photoelectric sensors capable of picking up the specific wavelengths of radiation emitted by oxygenated versus reduced hemoglobin
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Transcutaneous blood gas monitoring. : Intrapartum Biochemical Monitoring of the Fetus : Proceedings of the First International Symposium, Atlantic City, USA, June 1987
