Table 10. Postoperative parameters in the study groups.

Variable	Group A ( n = 250)	Group B ( n = 154)	Group C ( n = 41)	Group D ( n = 11)	Total ( n = 456)
Abbreviations: ICU, intensive care unit; MV, mechanical ventilation. Note: All values are expressed as mean ± SD.
Duration of MV, d	1.4 ± 2.4 ( n = 67)	2.3 ± 4.7 ( n = 97)	3 ± 5.4 ( n = 36)	1.4 ± 1.7 ( n = 11)	2.1 ± 4.2 ( n = 211)
ICU stay, d	2 ± 2.7	3.7 ± 5.3	4.2 ± 5.1	5.1 ± 3.5	2.9 ± 4.1
Hospital stay, d	9.4 ± 7	13.6 ± 15.2	14.9 ± 13.4	15.3 ± 7.1	11.5 ± 11.2