Reponses of automatic continuous positive airway pressure (APAP) devices to obstructive sleep apnoea simulated by the bench test
| APAP device | Pmax cmH2O | tmax min | Pmean cmH2O | Residual AHI events per h | Breathing normalisation |
| A1 | 17.9, 17.8 | 22.4, 19.0 | 14.6, 14.6 | 2.0, 2.0 | Yes , yes |
| A2 | 15.4, 15.6 | 40.3, 57.7 | 13.4, 13.5 | 2.0, 1.5 | Yes, yes |
| B | 10.5, 10.5 | 130.6, 121.3 | 6.7, 7.9 | 74.5, 71.0 | No, no |
| C | 13.4, 13.9 | 28.0, 44.1 | 12.4, 12.2 | 3.0, 3.0 | Yes, yes |
| D | 10.7, 10.7 | 75.1, 103.7 | 9.7, 9.7 | 26.5, 32.5 | No, no |
| E | 10.4, 10.4 | 20.7, 18.9 | 10.2, 10.2 | 3.5, 2.5 | No, no |
| F | 11.9, 12.1 | 34.4, 36.0 | 10.1, 10.1 | 11.5, 13 | No, no |
| G | 10.5, 11.0 | 32.2, 83.2 | 9.9, 9.9 | 33, 26.5 | No, no |
The two values for each variable correspond to the results obtained in the two test repetitions in each device. Pmax: maximum positive airway pressure applied; tmax: time to reach Pmax±0.3 cmH2O; Pmean: mean positive airway pressure; AHI: apnoea–hypopnoea index; A1: AirSense 10, standard setting; A2: AirSense 10, response setting; B: Dreamstar; C: Icon; D: Resmart; E: Somnobalance; F: System One; G: XT-Auto.