Table 1.
Baseline lung characteristics
| Lung weight (g) | 321 ± 40 |
| Functional residual capacity (FRC) (mL) | 388 ± 93 |
| Inspiratory capacity (mL) | 968 ± 165 |
| Inspiratory capacity (mL/kg) | 45.3 ± 7.2 |
| Total lung capacity (mL) | 1357 ± 225 |
| Total lung capacity (mL/kg) | 63.4 ± 9.9 |
| Upper inflection point volume (mL) | 991 ± 147 |
| Upper inflection point airway pressure (cmH2O) | 29.8 ± 4.7 |
| Maximal total respiratory system elastance (cmH2O/L) | 22.4 ± 5.0 |
| Specific lung elastance (cmH2O) | 6.72 ± 3.07 |
| Non-aerated tissue at FRC (g (%)) | 17 ± 13 (5 % ± 3) |
| Poorly aerated tissue at FRC (g (%)) | 117 ± 61 (36 % ± 17) |
| Well-aerated tissue at FRC (g (%)) | 186 ± 52 (59 % ± 17) |
| Over-aerated tissue at FRC (g (%)) | 0.02 ± 0.04 (0 % ± 0) |
Baseline lung characteristics obtained by computed tomography (before the start of the experiment, 73 pigs) and PV curve (43 pigs). Functional residual capacity was the volume of gas at 0 cmH2O of airway pressure. Total lung capacity was the volume of gas at 45 cmH2O. Maximal total respiratory system elastance was obtained at the maximal slope of the PV curve. Specific lung elastance was computed as the ratio of global stress to global strain. Values are mean ± standard deviation