[Retracted] The Effect of CT-Guided Artificial Pneumothorax plus Thoracoscopy and Central Venous Catheterization on the Drainage Effect of Pediatric Empyema and Pulmonary Function

Table 7

Comparison of cardiopulmonary exercise values between the two groups.

Group	Case (n)	VE/VO2		Breathing reserve (%)		VD/VT (%)		VO2/work
		Before surgery	After surgery	Before surgery	After surgery	Before surgery	After surgery	Before surgery	After surgery
Control group	40	29.52 ± 3.93	29.33 ± 4.69	29.13 ± 12.68	30.23 ± 11.5.3	58.44 ± 17.28	60.73 ± 20.19	12.29 ± 3.23	13.26 ± 4.27
Study group	42	29.18 ± 3.61	27.85 ± 3.36	30.59 ± 13.13	33.29 ± 10.83	59.13 ± 17.54	52.64 ± 18.57	11.79 ± 4.08	11.97 ± 5.62
t		0.795	0.627	0.631	0.573	0.938	0.479	0.473	0.688
P		0.605	0.013	0.917	0.714	0.977	0.000	0.891	0.882