Table 2 Vital signs and arterial blood gas tests at baseline and 1–2 h of HFNC
| HFNC success N = 10 | HFNC failure N = 7 | p | |
|---|---|---|---|
| Baseline | |||
| RR, breaths/min | 26 (25–29) | 23 (21–23) | 0.02 |
| HR, beats/min | 84 (73–97) | 79 (74–85) | 0.40 |
| SBP, mmHg | 125 (121–138) | 108 (105–133) | 0.07 |
| DBP, mmHg | 73 (71–78) | 63 (60–76) | 0.07 |
| pH | 7.43 (7.39–7.47) | 7.46 (7.44–7.48) | 0.05 |
| PaCO2, mmHg | 38 (35–40) | 34 (32–36) | 0.13 |
| PaO2/FiO2, mmHg | 223 (161–252) | 159 (137–188) | 0.02 |
| FiO2, % | 34 (32–41) | 41 (33–41) | 0.24 |
| 1–2 h of HFNC | |||
| RR, breaths/min | 23 (22–25) | 23 (21–23) | 0.36 |
| HR, beats/min | 82 (71–92) | 85 (78–92) | 0.91 |
| SBP, mmHg | 118 (111–131) | 110 (106–139) | 0.73 |
| DBP, mmHg | 71 (70–78) | 65 (63–78) | 0.36 |
| pH | 7.46 (7.42–7.49) | 7.47 (7.44–7.47) | 0.41 |
| PaCO2, mmHg | 38 (36–39) | 34 (33–35) | 0.06 |
| PaO2/FiO2, mmHg | 209 (179–376) | 142 (130–188) | 0.03 |
| FiO2, % | 40 (35–40) | 40 (40–50) | 0.06 |