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Bland-Altman analysis for the comparison between cardiac index measured by the Nexfin device and transpulmonary thermodilution depending upon the absence of atrial fibrillation and norepinephrine infusion.
| Subgroup | Bias (L/min/m2) | Upper limit of agreement (L/min/m2) | Lower limit of agreement (L/min/m2) | Percentage error |
|---|---|---|---|---|
| Whole population (n = 38) | 0.2 | -1.8 | 2.2 | 57% |
| Patients without atrial fibrillation (n = 33) | 0.3 | -1.8 | 2.4 | 57% |
| Patients without norepinephrine (n = 21) | 0.3 | -1.8 | 2.3 | 62% |
