Table 3.
Comparison of ventilatory parameters between different ventilatory modes.
| PS0 | ASV PS0 | p | PS8 | ASVPS8 | p | PS12 | ASVPS12 | p | |
|---|---|---|---|---|---|---|---|---|---|
| MV (L/min) | 9.1 ± 1 | 8.9 ± 0.9 | 0.51 | 9.3 ± 1.1 | 8.8 ± 1 | 0.49 | 8.7 ± 1 | 8.6 ± 1 | 0.51 |
| Spont RR (bpm) | 21 ± 1 | 17 ± 1∗ | <0.001 | 19 ± 1 | 16 ± 1∗ | <0.001 | 18 ± 1 | 16 ± 1∗ | <0.001 |
| Vt (ml) | 442 ± 25 | 520 ± 23∗ | <0.001 | 498 ± 30 | 539 ± 27∗ | <0.001 | 501 ± 30 | 529 ± 26∗ | <0.001 |
| Ppeak (cmH2O) | 12 ± 1 | 21 ± 4∗ | <0.001 | 16 ± 1 | 21 ± 3∗ | <0.001 | 20 ± 1 | 21 ± 4 | 0.06 |
| MAP | 9.1 ± 2 | 12 ± 1∗ | <0.001 | 10.8 ± 1 | 12.1 ± 0.1 | <0.001 | 11.8 ± 1 | 12.1 ± 1 | 0.07 |
| P0.1 (cmH2O) | −4.4 ± 0.4 | −2.1 ± 0.2 | <0.001 | −3.3 ± 0.4 | −2.0 ± 0.2 | <0.001 | −2.7 ± 0.3 | −1.8 ± 0.2 | <0.001 |
∗ p < 0.05, comparisons between two modes. Vt, tidal volume; RR, respiratory rate; MV, minute ventilation; Ppeak, peak pressure; MAP, mean airway pressure; P0.1, airway occlusion pressure.