Table 2. Intra- and postoperative data.

	Group 1			Group 2			Group 3			Group 4			p
	Mean±SD	Median	Min-Max	Mean±SD	Median	Min-Max	Mean±SD	Median	Min-Max	Mean±SD	Median	Min-Max
Duration of surgery (min)		240	150-275		240	210-390		270	180-360		255	210-480	0,36
CPB time (min)	86±22.2			93±34			104±21.5			113.8±25.3			0,12
Cross-clamp time (min)	52.7±12.5			60.7±24.6			63.3±11.7			68.2±21.4			0,28
Extubation time (hour)		10	6-24		7,75	5-11		10	4-17		10,5	8-20	0,35
Length of ICU stay (day)		1	1-1		1	1-1		1	1-2		1	1-3	0,30
Time to discharge (day)		6	4-8		5,5	4-20		7	4-28		6,5	5-15	0,46
Mortality		0	0		0	0		0	0		0	0
SD: Standard deviation; Min: Minimum; Max: Maximum; CPB: Cardiopulmonary bypass; ICU: Intensive care unit; Kruskal-Wallis test was conducted for continuous variables to assess the differences among four groups.