transcutaneous blood gas monitor

trans·cu·ta·ne·ous blood gas mon·i·tor

(trans'kyū-tā'nē-ŭs blŭd gas mon'i-tŏr)
A device that uses miniature electrodes applied to the skin to estimate blood oxygen and carbon dioxide tension; the transcutaneous carbon dioxide tension (tcPCO2) provides a relatively accurate estimate of arterial carbon dioxide (PaCO2) in all age groups; the estimate of transcutaneous oxygen tension (tcPO2) is more accurate in neonates and small children.
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