The Accuracy of Transcutaneous P_CO2in Subjects With Severe Brain Injury: A Comparison With End-Tidal P_CO2

In patients suffering from brain injury, end-tidal PCO2 (PETCO2 ) monitoring is controversial, but transcutaneous PCO2 (PtcCO2 ), which is noninvasive and utilizes immediate display, may be an alternative method. We hypothesized that PtcCO2 would be more accurate than PETCO2 for monitoring PaCO2 in patients with severe brain injury.A prospective observational study included consecutive mechanically ventilated adult subjects who had acute brain...