Table 1.
Haemodynamic data at each experimental step
| Haemodynamic variable | Baseline | Fluid loading | IAH | IAH + Fluid |
| Mean arterial pressure (mmHg) | 77 ± 20 | 99 ± 18* | 109 ± 13* | 112 ± 16* |
| Heart rate (beats/min) | 87 ± 18 | 92 ± 18 | 92 ± 13 | 99 ± 12* |
| Central venous pressure (mmHg) | 5 ± 2 | 7 ± 2 | 12 ± 4*† | 12 ± 3*† |
| Pulmonary artery occlusion pressure (mmHg) | 7 ± 2 | 11 ± 3 | 16 ± 6*† | 16 ± 3*† |
| Intra-abdominal pressure (mmHg) | 7 ± 2 | 7 ± 3 | 25 ± 3*† | 27 ± 4*† |
| Chest wall compliance (ml/cmH2O) | 58 ± 24 | 65 ± 22 | 22 ± 5*† | 21 ± 4*† |
| Systemic vascular resistance (dyn·s/cm5) | 963 ± 392 | 1006 ± 356 | 1038 ± 192 | 994 ± 303 |
| Global end-diastolic volume (ml) | 767 ± 164 | 883 ± 214* | 928 ± 172* | 997 ± 217*† |
| PulseCO (l/min) | 6.4 ± 2.0 | 7.1 ± 2.7* | 6.8 ± 2.5 | 7.0 ± 2.8 |
| PCCOpre (l/min) | n.a. | 7.1 ± 1.1* | 6.8 ± 2.0 | 7.9 ± 1.9 |
| COTCP (l/min) | 6.2 ± 1.6 | 7.5 ± 2.1* | 8.0 ± 1.9* | 9.4 ± 2.4*†‡ |
| PCCOrecal (l/min) | 6.2 ± 1.6 | 7.5 ± 2.1* | 8.0 ± 1.9* | 9.4 ± 2.4*†‡ |
| CCOPAC (l/min) | 6.4 ± 1.4 | 7.6 ± 1.4* | 7.7 ± 1.5* | 9.1 ± 2.1*†‡ |
Data presented as the mean ± standard deviation. IAH, intra-abdominal hypertension; IAH + Fluid, second fluid load at IAH; PulseCO, continuous cardiac output by pulse power analysis; PCCOpre, continuous cardiac output by pulse contour analysis before calibration; COTCP, bolus transcardiopulmonary thermodilution cardiac output; PCCOrecal, continuous cardiac output by pulse contour analysis after recalibration; CCOPAC, continuous cardiac output by pulmonary artery catheter thermodilution. *P < 0.05 versus BL; †P < 0.05 versus + Fluid; ‡P < 0.05 versus IAH (PCCOpre versus previous PCCOrecal). n.a., not applicable.