Effect of continuous nursing combined with respiratory exercise nursing on pulmonary function of postoperative patients with lung cancer

Table 3 Comparison of blood gas between the two groups (mean ± SD)

Indicators	Time	Test group, n = 40	Control group, n = 40	t value	P value
PaO2 (mmHg)	Before the intervention	90.67 ± 11.24	90.32 ± 11.15	0.139	0.889
	3 mo after the intervention	98.45 ± 9.46	93.28 ± 8.89	2.524	0.013
PaCO2 (mmHg)	Before the intervention	50.39 ± 5.27	50.12 ± 5.06	0.233	0.815
	3 mo after the intervention	42.85 ± 3.84	46.08 ± 4.38	3.507	< 0.001