Table 2.
Ventilator settings
| Patient | PS level | PS rise time (s) | PS cycle off | NAVA level | NAVA | PEEP | FiO 2 |
|---|---|---|---|---|---|---|---|
| (cmH2O) | (% peak flow) | (cmH2O/μV) | trigger (μV) | (cmH2O) | (%) | ||
| 1 | 6 | 0.20 | 30 | 0.1 | 0.5 | 6 | 70 |
| 2 | 10 | 0.20 | 50 | 0.8 | 0.5 | 8 | 50 |
| 3 | 8 | 0.20 | 70 | 0.4 | 0.5 | 8 | 50 |
| 4 | 5 | 0.20 | 50 | 0.1 | 1.0 | 7 | 60 |
| 5 | 6 | 0.20 | 50 | 0.1 | 0.5 | 4 | 40 |
| 6 | 5 | 0.05 | 50 | 5.0 | 0.5 | 5 | 30 |
| 7 | 10 | 0.00 | 50 | 0.2 | 0.5 | 6 | 55 |
| 8 | 6 | 0.20 | 50 | 0.2 | 0.5 | 6 | 45 |
| 9 | 6 | 0.20 | 50 | 0.2 | 0.5 | 6 | 70 |
| 10 | 8 | 0.00 | 60 | 0.1 | 0.5 | 5 | 35 |
| 11 | 6 | 0.20 | 50 | 0.2 | 0.5 | 6 | 40 |
Pressure support (PS) levels and rise time hold for both ventilators, whereas cycle-off criteria is only set for NIV-PSVServo-I. The BiPAP Vision uses the Auto-Trak Sensitivity algorithm to trigger and cycle off the ventilator and cannot be set individually. PEEP and FiO2 were similar for all three ventilatory modes. FiO2: inspired oxygen fraction; NAVA: neurally adjusted ventilatory assist; PEEP: positive end-expiratory pressure.