Changes in ventilator parameters
| NHF-off | NHF-OTS 30 L/min | NHF-OTS 50 L/min | |
| TV | |||
| Mean (mL)±SD | 685.6±236.6 | 929.8±434.7 | 968.8±451.1 |
| p Value from NHF-off | <0.05 | <0.05 | |
| MV | |||
| Mean (L)±SD | 10.1±3.0 | 10.1±3.9 | 10.1±4.0 |
| p Value from NHF-off | p=1.00 | p=1.00 | |
| RR | |||
| Mean (bpm)±SD | 15.1±2.1 | 11.6±3.1 | 11.1±2.3 |
| p Value from NHF-off | p<0.01 | p<0.01 | |
| PtcCO2 | |||
| Mean (mm Hg)±SD | 37.3±2.8 | 36.6±3.6 | 36.4±5.0 |
| p Value from NHF-off | p>0.05 | p>0.05 |
p Value compared with NHF-OTS off.
n=30.
MV, minute ventilation; PtcCO2, transcutaneous carbon dioxide; RR, respiratory rate; TV, tidal volume.