TABLE 3.
Influence of support level, breathing pattern and respiratory drive on sensitivity and prevalence of asynchronies
| Variables | Range# | Sensitivity ≥0.20 | Linear trend for sensitivity | AI ≥10% | Linear trend for prevalence |
| PS cmH2O | <10 | 22.2% | p=0.102 | 33.3% | p=0.491 |
| 10–12 | 50.0% | 57.1% | |||
| >12 | 60.0% | 50.0% | |||
| VT mL | <570 | 60.0% | p=0.072 | 50.0% | p=0.654 |
| 570–851 | 50.0% | 55.0% | |||
| >851 | 20.0% | 40.0% | |||
| RRmec breath·min−1 | <19 | 0.0% | p=0.146 | 50.0% | p=0.371 |
| 19–25 | 55.0% | 60.0% | |||
| >25 | 38.9% | 30.0% | |||
| EAdipeak µV | <10 | 30.0% | p=0.999 | 60.0% | p=0.178 |
| 10–22 | 60.0% | 55.0% | |||
| >22 | 30.0% | 30.0% |
AI: asynchrony index; PS: inspiratory pressure support; VT: tidal volume; RRmec: ventilator rate of cycling; EAdipeak: peak electrical activity of the diaphragm. #: defined by percentiles.