Table 1 -.
Ventilator settings employed and the corresponding percentage recovery of absolute humidity (%RAH) for each HME
| VT (mL) | Flow-rate (L/min) | f (/min) | FiO2 | %RAH
|
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| G2S | Portex | HCH | Pall | G light | G compact | Hygrobac S | Hygroster | ||||
| 200 | 30 | 10 | 0.5 | 94.4 | 95.5 | 95.2 | 95.1 | 94.1 | 94.7 | 96.4 | 94.2 |
| 500 | 30 | 10 | 0.5 | 88.3 | 85.5 | 88.9 | 88.3 | 87.9 | 89.7 | 92.3 | 85.8 |
| 1000 | 30 | 10 | 0.5 | 80.5 | 74.9 | 76.4 | 68.8 | 79.9 | 81.7 | 85.4 | 74.5 |
| 500 | 30 | 5 | 0.5 | 87.8 | 85.6 | 86.3 | 83.6 | 86.4 | 89.0 | 91.0 | 83.4 |
| 500 | 30 | 10 | 0.5 | 88.5 | 85.8 | 87.6 | 84.8 | 87.7 | 90.4 | 92.0 | 85.0 |
| 500 | 30 | 20 | 0.5 | 90.2 | 85.9 | 89.6 | 87.3 | 88.2 | 91.5 | 92.8 | 87.1 |
| 500 | 30 | 10 | 0.5 | 88.0 | 85.9 | 87.4 | 85.0 | 87.8 | 90.3 | 92.2 | 87.1 |
| 500 | 60 | 10 | 0.5 | 89.1 | 87.1 | 89.2 | 87.5 | 88.5 | 91.6 | 92.9 | 90.2 |
| 500 | 90 | 10 | 0.5 | 90.5 | 87.4 | 90.1 | 90.8 | 90.0 | 92.5 | 93.7 | 92.0 |
Note: VT = tidal volume; f = respiratory rate; FiO2 = fraction of inspired oxygen; %RAH = percentage recovery of absolute humidity