Table 2.

Pulmonary function test results at initial evaluation and immediately before and after operation

Parameter	Initial value	Postoperative value
Forced vital capacity (L)	3.38	3.73
Forced expiratory volume in 1 second (L)	1.96	2.93
Maximum voluntary ventilation (L/min)	42	75
Vital capacity (L)	2.6	3.7
Total lung capacity (L)	4.1	5.9
Functional residual capacity (L)	1.6	2.3
Expiratory reserve volume (L)	0.02	0.06