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  • Title: Evaluation of a single transcutaneous PO2-PCO2 sensor in adult patients.
    Author: Mahutte CK, Michiels TM, Hassell KT, Trueblood DM.
    Journal: Crit Care Med; 1984 Dec; 12(12):1063-6. PubMed ID: 6439472.
    Abstract:
    We evaluated a new transcutaneous gas monitor designed to measure simultaneously transcutaneous oxygen (PtcO2) and carbon dioxide (PtcCO2) tensions. A total of 514 simultaneous transcutaneous and arterial gases were obtained in 47 adult ICU patients. Mean PtcCO2 was close (SEE less than 4 torr) to mean PaCO2, but mean PtcO2 was considerably less than mean PaO2. However, PtcO2 changes larger than 15 torr virtually always indicated respective increases or decreases in PaO2. Similarly, PtcCO2 changes larger than 5 torr almost invariably indicated a parallel change in PaCO2. From this study we conclude that monitoring of transcutaneous gases yields reliable trend information on arterial gases and that it is a valuable noninvasive adjunct in the monitoring of gas exchange in adult patients.
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