Bland-Altman plots for agreement of pH, PO2, PCO2, and bicarbonate showed 95% limits of agreement of -0.04 to 0.146, -52.51 to 164.59, -26.61 to 31.01 and -7.0 to 15.6, respectively. ConcIusions: The arterial pH, PO2, PCO2 and HCO3 values correlated well with central venous values.
Contexto: Correlación y concordancia entre los valores de pH, PO2, PCO2 y HCC3 en sangre arterial y venosa central de pacientes con ventilación mecánica.