Abstract
Transcutaneous oxygen (PtcO2 is a clinically useful tool for monitoring adult patients in the intensive care unit and during the intraoperative period. The PtcO2 values correlated well with arterial oxygen tension (PaO2) when the patient's cardiac index (CI) was greater than 2 L/minxM2. A weighted mean correlation coefficient (rw) of 0.92 was obtained for 351 data points taken in 30 patients; the mean slope and intercept of the linear regression lines were 0.76 and 14 torr, respectively (PtcO2 × 80% of PaO2). Six patients monitored during cardiac decompensation, cardiac arrest and cardiopulmonary resuscitation demonstrated a good correlation between PtcO2 and both Cl and oxygen delivery (rw = 0.94 for PtcO2vs Cl and rw 0.96 for PtcO2vs O2 delivery). PtcO2 values less than 25 torr were found to be preterminal and predicted cardiac arrest by 43 × 28 minutes.
Published Version
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