Variable |
Conventional NIV Group (n=42) |
Immediate NIV Group (n=37) |
Difference between groups (95%IC) |
P value |
FIO2 |
|
|
|
|
Pre-Intervention |
0,45 ± 0,11 |
0,49 ± 0,09 |
0,04 (-0,1 to +0,2) |
0,67 |
Post-Intervention |
0,43 ± 0,7 |
0,30 ± 0,10 |
0,13 (+0,05 to +0,22) |
0,01 |
One day later |
0,40 ± 0,09 |
0,30 ± 0,05 |
0,1 (+0,03 to +0,3) |
0,04 |
PaO2 (mmHg) |
|
|
|
|
Pre-Intervention |
91 ± 15 |
90 ± 14 |
1 (-3 to +4) |
0,76 |
Post-Intervention |
82 ± 12 |
80 ± 16 |
2 (-4 to +5) |
0,68 |
One day later |
84 ± 11 |
81 ± 14 |
3 (-7 to +8) |
0,67 |
PaO2/FIO2 |
|
|
|
|
Pre-Intervention |
202 ± 34 |
183 ± 48 |
19 (-11 to +28) |
0,12 |
Post-Intervention |
191 ± 45 |
266 ± 29 |
75 (+45 to +91) |
<0,001 |
One day later |
210 ± 39 |
279 ± 37 |
69 (+33 to +82) |
<0,001 |
PaCO2 (mmHg) |
|
|
|
|
Pre-Intervention |
37 ± 5 |
39 ± 4 |
2 (-4 to +5) |
0,78 |
Post-Intervention |
41 ± 6 |
42 ± 3 |
1 (-4 to +3) |
0,87 |
One day later |
40 ± 4 |
40 ± 2 |
0 (-2 to +2) |
0,91 |