Table 4.

Comparison of PaO₂, SaO₂ and PaCO₂ (x̅±s)

Index	Control group (n=53)	Research group (n=53)	t	P
PaO2 (mmHg)
Before treatment	54.52±5.31	54.94±5.29	0.408	0.684
After treatment	60.82±6.71***	64.97±7.52***	2.998	0.003
SaO2 (%)
Before treatment	81.21±3.22	81.03±3.31	0.284	0.777
After treatment	91.52±2.85***	95.79±3.02***	7.486	0.001
PaCO2 (mmHg)
Before treatment	85.82±4.64	86.43±4.71	0.672	0.504
After treatment	45.75±4.27***	39.45±3.82***	8.005	0.001

Note: Compared in the same group before and after treatment;

^***P<0.001.