Total Population N= 286 HFNC Success N= 175 HFNC Failure N= 111
p
Study population Study population Study population Study population Study population
Male (%) 170 (59.4) 100 (57.1) 70 (63.1) 0.32
Age, days (±SD) 54 (54) 58 (42) 47 (68) <0.01
Weight, g (±SD) 4460 (1137) 4547 (1147) 4324 (1112) 0.09
Born preterm (%) 42 (15) 27 (15) 15 (14) 0.66
Baseline (H0) Baseline (H0) Baseline (H0) Baseline (H0) Baseline (H0)
ROX index (±SD) N= 250 6.6 (3.3) N= 158 6.6 (2.8) N= 92 6.4 (4.1)
0.14
mWCAS (±SD) N= 286 4.5 (1.1) N= 175 4.3 (1.0) N= 111 4.7 (1.3)
0.05
EDIN (±SD) N= 279 5 (3) N= 173 5 (3) N= 106 5 (3)
0.60
pH (±SD) N= 231 7.3 (0.1) N= 143 7.3 (0.1) N= 88 7.3 (0.1)
0.46
RR, bpm (±SD) N= 286 58 (16) N= 175 57 (15) N= 111 59 (18)
0.42
HR, bpm (±SD) N= 286 161 (20) N= 175 161 (19) N= 111 162 (21)
0.35
FiO2, % (±SD) N= 250 32 (13) N= 158 31 (13) N= 92 33 (13)
0.07
PCO2, mmHg (±SD)
N= 234 58 (13) N= 145 58 (13) N= 89 60 (12)
0.28
1 hour after HFNC initiation (H1) 1 hour after HFNC initiation (H1) 1 hour after HFNC initiation (H1) 1 hour after HFNC initiation (H1) 1 hour after HFNC initiation (H1)
ROX index (±SD) N= 261 7.4 (3.3) N= 175 7.7 (3.4) N= 86 7.0 (2.8)
0.09
mWCAS (±SD) N= 258 3.5 (1.2) N= 175 3.3 (1.0) N= 83 4.0 (1.5)
< 0.01
EDIN (±SD) N= 256 3 (2.3) N= 173 2.9 (2.2) N= 83 3.3 (2.5)
0.30
RR, bpm (±SD) N= 261 51 (14) N= 175 50 (13) N= 86 54 (17)
0.05
HR bpm (±SD) N= 261 155 (19.4) N= 175 153 (20.3) N= 86 158 (16.9)
0.03
FiO2, % (±SD) N= 261 29.6 (8.5) N= 175 29.4 (8.9) N= 86 30.0 (7.8)
0.28
Change during the first hour of HFNC delivery (H1-H0) Change during the first hour of HFNC delivery (H1-H0) Change during the first hour of HFNC delivery (H1-H0) Change during the first hour of HFNC delivery (H1-H0) Change during the first hour of HFNC delivery (H1-H0)
ROX index (±SD) N= 230 0.8 (3.3) N= 158 1.0 (3.3) N= 72 0.5 (3.4)
0.34
mWCAS (±SD) N= 258 -0.9 (1.0) N= 175 -1.0 (1.0) N= 83 -0.7 (1.0)
0.07
EDIN (±SD) N= 252 -2.0 (2.4) N= 171 -2.2 (2.4) N= 81 -1.5 (2.3)
0.02
RR, bpm (±SD) N= 261 -6.3 (± 14.4) N= 175 -7.1 (± 14.4) N= 86 -4.7 (± 14.2)
0.31
HR, bpm (±SD) N= 261 -6.4 (± 20.0) N= 175 -8.0 (± 19.8) N= 86 -3.2 (± 20.2)
0.17
FiO2, % (±SD) N= 247 -1.9 (12.5) N= 158 -1.6 (12.2) N= 89 -2.4 (13.0)
0.94