Table 2. Patient parameter.
| case 1 | case 2 | case 3 | case 4 | case 5 | case 6 | case 7 | case 8 | ||
|---|---|---|---|---|---|---|---|---|---|
| heart rate (/min) | 100 | 140 | 135 | 128 | 130 | 138 | 126 | 116 | |
| mean arterial pressure (mmHg) | 90 | 52 | 56 | 58 | 58 | 56 | 54 | 63 | |
| Blood gas analysis at study enrollment | pH | 7.44 | 7.48 | 7.47 | 7.43 | 7.39 | 7.42 | 7.44 | 7.46 |
| PaO2 (mmHg) | 106 | 88 | 159 | 152 | 108 | 135 | 132 | 99 | |
| PaCO2 (mmHg) | 37 | 40 | 38 | 40 | 47 | 46 | 42 | 42 | |
| lactate (mg/dL) | 7.0 | 9.0 | 8.0 | 6.0 | 7.0 | 8.0 | 5.0 | 7.0 | |
| P/F ratio (mmHg) | 505 | 176 | 265 | 304 | 216 | 300 | 528 | 330 | |
| Respiratory rate (/min) | 22 | 28 | 25 | 30 | 25 | 32 | 28 | 20 | |
| Tidal volume (mL) | 54 | 31 | 26 | 27 | 28 | 47 | 62 | 64 | |
| minute volume (L) | 1.2 | 0.87 | 0.65 | 0.81 | 0.7 | 1.50 | 1.74 | 1.28 | |
| FIO2 | 0.21 | 0.5 | 0.6 | 0.5 | 0.5 | 0.45 | 0.25 | 0.3 | |
| PEEP (cmH2O) | 5 | 6 | 7 | 6 | 6 | 6 | 5 | 6 | |
| CVP (cmH2O) | 4 | 11 | 7 | 7 | 9 | 6 | 3 | 11 | |
| ΔCVP during occlusion test(cmH2O) | 8.6 | 5.9 | 6.3 | 8.2 | 2.4 | 2.4 | 10.4 | 3.1 | |
| k | 1.59 | 2.25 | 2.59 | 1.83 | 3.79 | 2.31 | 3.66 | 3.58 | |
PEEP, positive end-expiratory pressure; CVP, central venous pressure; k, ratio of ΔPaw to ΔCVP obtained during an occlusion test.