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.

Synonyms: Oxygen Partial Pressure Determination, Transcutaneous, Oximetries, Transcutaneous, Oximetry, Cutaneous, Capnometries, Transcutaneous, Transcutaneous Blood Gas Monitoring, TcPCO2, Blood Gas Monitoring, Transcutaneous, Cutaneous Oximetry, Capnometry, Transcutaneous, Oximetry, Transcutaneous, Transcutaneous Capnometry, Carbon Dioxide Partial Pressure Determination, Transcutaneous, Transcutaneous Capnometries, Transcutaneous Oximetry, Cutaneous Oximetries, Transcutaneous Oximetries, Oximetries, Cutaneous, PtcO2