Table 1.
Variables derived from 4‐quadrant and polar plot analysis to assess the ability of transpulmonary thermodilution (TPTDCO) and of calibrated pulse contour analysis (PCACO) for estimating changes in cardiac output measured by pulmonary artery thermodilution (PATDCO). Trending analysis was performed using 5 and 10 mL of ice‐cold physiological saline as thermal indicator during simultaneous measurements of TPTDCO and PATDCO. Trending analysis between PCACO and PATDCO was performed using 10 mL of ice‐cold physiological saline solution for the thermodilution method. Only data after excluding mean cardiac output changes ≤0.5 L/min are presented
| Phase‐1: TPTDCO and PATDCO (5 mL of Thermal Indicator) | Phase‐1: TPTDCO and PATDCO (10 mL of Thermal Indicator) | Phase‐2: PCACO and PATDCO | |
|---|---|---|---|
| Four‐quadrant plot analysis | |||
| Measurements in the right quadrant (n) | 23 | 23 | 10 |
| Measurements in the wrong quadrant (n) | 0 | 0 | 6 |
| Concordance rate (%) | 100 | 100 | 63 |
| Polar plot analysis | |||
| Measurements with angular bias ≤30° (n) | 23 | 23 | 3 |
| Measurements with angular bias >30° (n) | 0 | 0 | 8 |
| Mean angular bias (°) | 2 | −1 | 38 |
| Radial limits of agreement (°) | −10 to 14 | −9 to 6 | 5–71 |