Set and measured parameters at two circuits of the split CPAP system
| Set FiO2 on oxygen blender | Circuit 1 | Circuit 2 | ||||
| Measured FiO2 | Set CPAP (cm H2O) | Measured CPAP (cm H2O) | Measured FiO2 | Set CPAP (cm H2O) | Measured CPAP (cm H2O) | |
| 0.30 | 0.28 | 3 | 3.6 | 0.29 | 3 | 3.3 |
| 0.40 | 0.41 | 4 | 4.1 | 0.40 | 4 | 4.0 |
| 0.45 | 0.44 | 4 | 4.1 | 0.43 | 5 | 4.6 |
| 0.50 | 0.48 | 4 | 4.2 | 0.49 | 6 | 5.9 |
| 0.50 | 0.50 | 5 | 5.1 | 0.51 | 5 | 5.2 |
| 0.60 | 0.60 | 6 | 5.9 | 0.60 | 5 | 5.1 |
| 0.70 | 0.72 | 6 | 6.2 | 0.69 | 6 | 6.0 |
| 0.80 | 0.80 | 6 | 6.1 | 0.78 | 8 | 7.9 |
| 0.80 | 0.81 | 7 | 6.9 | 0.78 | 6 | 6.1 |
| 0.90 | 0.88 | 7 | 7.1 | 0.89 | 7 | 6.8 |
| 1 | 0.99 | 8 | 8.1 | 0.99 | 8 | 7.8 |
CPAP, continuous positive airway pressure; FiO2, fractional inspired oxygen concentration.