Table 2.
Mean PaO2 value, oscillations amplitudes and mean airway pressure associated with different ventilatory modes (volume or pressure), I:E ratios ranging from 1:4 to 4:1, tidal volume of 10 ml kg−1, and respiratory rate of 12 breaths per minute.
| I:E | Volume control | Pressure control | ||||
|---|---|---|---|---|---|---|
| PaO2 mean (mmHg) | PaO2 oscillation amplitude (mmHg) | Airway Pressure (cmH2O) | PaO2 mean (mmHg) | PaO2 oscillation amplitude (mmHg) | Airway Pressure (cmH2O) | |
| 1:2 | 127 ± 12 | 10 ± 5 | 5 ± 2 | 134 ± 14 | 10 ± 6 | 6 ± 3 |
| 2:1 | 127 ± 14 | 7 ± 4 | 6 ± 2 | 140 ± 13 | 8 ± 4 | 8 ± 3 |
| 1:4 | 125 ± 10 | 10 ± 5 | 5 ± 2 | 133 ± 9 | 10 ± 4 | 5 ± 3 |
| 4:1 | 129 ± 12 | 5 ± 3 | 7 ± 2 | 144 ± 8 | 7 ± 3 | 9 ± 2 |
Values are mean ± standard deviation recorded in 6 animals for 2 min at steady state. RR: respiratory rate. VT: tidal volume.