Ventilator Settings and Respiratory Measurements
| ZEEP group | PEEP group | |||||||
|---|---|---|---|---|---|---|---|---|
| Ventilator setting | Sheep 1 baseline | Sheep 1 end | Sheep 2 baseline | Sheep 2 end | Sheep 3 baseline | Sheep 3 end | Sheep 4 baseline | Sheep 4 end |
| VT (mL) | 193 | 176 | 157 | 165 | 186 | 185 | 168 | 159 |
| PEEP (cm H2O) | 0.0 | 0.0 | 0.0 | 0.0 | 13.3 | 14.5 | 18.9 | 18.3 |
| PIP (cm H2O) | 13.4 | 22.0 | 15.9 | 19.4 | 29.0 | 35.0 | 32.2 | 37.0 |
| MAP (cm H2O) | 3.0 | 4.5 | 3.2 | 3.7 | 16.6 | 19.2 | 22.1 | 22.2 |
| Crs (mL/cm H2O) | 17.1 | 9.1 | 12.9 | 10.4 | 17.9 | 14.6 | 16.5 | 14.8 |
PIP = peak inspiratory pressure; MAP = mean airway pressure; Crs = respiratory system compliance; End = after 16 h of mechanical ventilation for ZEEP group and 4 h for PEEP group.