High Flow Nasal Prong O2 (n=113) | Venturi Mask O2 (n=108) | Significance | |
Primary composite endpoint | 7 (6.2%) | 7 (6.5%) | P=1.0 |
Mortality | 1 (0.5%) | 0 | P=1.0 |
LOS | 6 (4,10) | 6 (3.5,9) | P=0.71 |
HDU LOS | 2 (2,4) | 2 (1,3) | P=0.084 |
Borg Scale HD 1 | 4 (2,6) | 4 (2,7) | p=0.78 |
Borg Scale HD 2 | 3 (2,5) | 4.5 (2,6) | P=0.13 |
Likert Scale HD 1 | 3 (3,4) | 3.5 (3,4) | P=0.63 |
Likert Scale HD 2 | 4 (3,5) | 4 (3,4) | P=0.47 |
Respiratory Rate (breaths per minute) | 16.5 (SD 3.3) | 17 (SD 3.0) | P=0.21 |
SaO2 | 98 (97, 100) | 98 (96, 99.5) | P=0.12 |
pH | 7.38 (SD 0.04) | 7.38 (SD 0.36) | P=0.39 |
paO2 (mmHg) | 106.3 (SD 30.9) | 102.9 (SD 25) | P=0.42 |
paCO2 (mmHg) | 43.6 (SD 5.6) | 45.5 (SD 6.5) | P=0.032 |
Peak-flow (metres per second) | 245.3 (SD 124) | 247.2 (SD 124.5) | P=0.91 |
COPD, chronic obstructive pulmonary disease.