Previous to NIV initiation
After NIV
initiation
p
pH
7,06+/−0,98
7,42+/−0,02
0,311
PaO2(mmHg)
79,33+/−21,94
85,66+/−8,41
0,352
PaCO2(mmHg)
47,33+/−7,24
39,00+/−3,50
0,029
HCO3(mmol/L)
28,12+/−1,96
24,62+/−2,13
0,008