Table 2.

Comparison of blood gas indexes between the two groups of premature infants (x̅ ± sd)

Groups	Control group (n=47)	Research group (n=47)	t	P
SaO2 (%)
Before treatment	81.85±8.24	81.87±8.28	0.012	0.990
After treatment	96.86±5.47	99.57±4.18	2.699	0.008
t	10.404	13.083
P	<0.001	<0.001
PaO2 (mmHg)
Before treatment	45.28±5.35	45.16±5.25	0.110	0.913
After treatment	72.67±6.29	82.37±7.39	6.853	<0.001
t	22.740	28.141
P	<0.001	<0.001
PaCO2 (mmHg)
Before treatment	45.73±3.58	44.67±3.56	0.081	0.936
After treatment	40.30±3.58	38.25±3.37	2.858	<0.01
t	7.217	8.978
P	<0.001	<0.001

Note: SaO₂: arterial oxygen saturation; PaO₂: arterial partial pressure of oxygen; PaCO₂: arterial partial pressure of carbon dioxide.