Table 3. Postoperative complications.

	Group 1		Group 2		Group 3		Group 4		p
	n	%	n	%	n	%	n	%
Inotropic support	1	9,1	2	20	1	9,1	4	50	0,139
IABP use	-	-	-	-	-	-	-	-	-
Pacemaker use	-	-	-	-	1	9,1	2	25	0,142
Myocardial infarction	-	-	-	-	-	-	-	-	-
Atrial fibrillation	-	-	-	-	-	-	1	12,5	0,20
Stroke	-	-	-	-	-	-	-	-	-
Hemodialysis	1	9,1	-	-	-	-	-	-	1,000
Delirium	-	-	-	-	-	-	-	-	-
Gastrointestinal bleeding	-	-	-	-	1	9,1	-	-	1,000
IABP: Intra-aortic balloon pump; Chi-square test was conducted for the categorical variables to assess the differences among four groups.