. 2021 Apr 15;13(4):3845–3850.

Table 4.

Comparison of main indicators of blood gas analysis between the two groups (x ± sd)

Index	Time	Observation group (n=58)	Control group (n=58)
oxygen partial pressure (mmHg)	before intervention	52.4±16.7	53.2±17.1
	after intervention	87.4±23.4^*,^#	81.3±21.1^*
oxygenation index (mmHg)	before intervention	117.9±28.1	118.0±27.9
	after intervention	246.7±39.2^*,^#	199.9±31.2^*
P(A-a)DO₂/PaO₂	before intervention	0.97±0.14	0.96±0.11
	after intervention	0.52±0.06^*,^#	0.68±0.08^*

compared with before intervention, P < 0.05;

compared with control group after intervention, P < 0.05.