Table 2.
Main ventilator settings
| PSV | NAVA | P | |
|---|---|---|---|
| Level of support | 12.5 [4–20] cmH2O | 0.8 [0.2–3] cmH2O/μvolt | |
| Inspiratory trigger | flow | - | |
| Expiratory trigger (%) | 30 [21–40] | - | |
| Asynchrony | |||
| - number (events/min) | 1 [0–17] | 0.46 [0.08–7.84] | 0.0006* |
| -AI (%) | 3..37 [0–34.47] | 1.73 [0.24–20] | 0.0015* |
| - number of patients with an AI > 10 % | 9/30 (30 %) | 5/30 (16.6 %) | 0.0013* |
| Ineffective efforts | |||
| - number (events/min) | 0.22 [0–16.96] | 0.22 [0–7.64] | 0.0259* |
| - percentage (%) | 0.94 [0–34.4] | 0.77 [0–17.73] | 0.0369* |
| Autotriggering | |||
| - number (events/min) | 0.18 [0–2.76] | 0.04 [0–0.48] | 0.0100* |
| - percentage (%) | 0.71 [0–9.54] | 0.19 [0–2.94] | 0.0385* |
| Double triggering | |||
| - number (events/min) | 0.1 [0–4.72] | 0.20 [0–4.76] | 0.036* |
| - percentage (%) | 0.71 [0–9.54] | 0.76 [0–18.9] | 0.046* |
| VT | |||
| - ml/Kg of PBW | 6.6 [4.3–12.2] | 6.7 [5.2–10.6] | 0.48 |
| - percentage of patients with a VT between 6 and 8 mlkg of PBW | 43.3 | 60 | 0.016* |
| - Variability | 0.12 [0.01–0.41] | 0.13 [0.02–0.91] | 0.18 |
| - Variability > 13 % (%) | 33 | 53 | 0.04* |
Data are presented as median [interquartile range]. * is signicant with p lower than 0.05