Figure 1.

Bland-Altman plot (A) and regression analysis (B) for comparison between the intermittent thermodilution-derived cardiac output (CO_PAC) by the pulmonary artery catheter (PAC) and the arterial pressure-based cardiac output (CO_AP) by the FloTrac™system for unequal numbers of replicates. The solid line represents the mean difference (bias) and the dashed lines represent the limits of agreement (bias ± 1.96 SD).