Table 1.

Demographic data and information for the operation and postoperative complications of study subjects

	Median (min to max), or n (%)
	AAS (n = 21)	CAS (n = 21)	P value
Age (years)	67 (46 to 85)	77 (42 to 88)	0.06
Body weight (kg)	73 (51 to 97)	75 (50 to 95)	NS (0.70)
Male	15 (85.7)	18 (71.4)	NS (0.45)
Cigarette smoking	20 (95.2)	17 (81)	NS (0.34)
Medical history
Coronaropathy	7 (33.3)	5 (23.8)	NS (0.50)
Angina pectoris	1 (4.8)	5 (23.8)
Myocardial infarction	2 (9.5)	2 (9.5)
Coronary bypass	1 (4.8)	3 (14.3)
Transluminal angioplasty	2 (9.5)	2 (9.5)
Hypertension	15 (71.4)	18 (85.7)	NS (0.45)
Heart failure (left ventricular)	1 (4.8)	2 (9.5)	NS (1.00)
Diabetes mellitus	5 (23.8)	5 (23.8)	NS (1.00)
Chronic bronchial obstruction	4 (19)	7 (38.1)	NS (0.29)
Renal insufficiency	7 (33.3)	8 (38.1)	NS (0.75)
Medications
Antiplatelets agents	12 (60)	21 (100)	0.001
Statins	9 (42.9)	15 (71.4)	0.060
Operation information
Blood loss (mL)	1000 (400 to 3500)	100 (50 to 900)	< 10-4
Fluid infusion (mL)	4500 (3000 to 9000)	1500 (1000 to 3000)	< 10-4
Blood transfusion
Red blood cells	1 (0 to 6)	0 (0 to 2)	< 10-4
Fresh frozen plasma	1 (0 to 4)	0	NS (0.15)
Cell-saver	2 (0 to 8)	0	NS (1.00)
Operation duration (hours)	2.5 (1.6 to 6.5)	1.2 (1 to 2.5)	< 10-4
Vascular clamping duration (min)	50.5 (14 to 90)	26 (12 to 45)	< 10-4
Catecholamines	2 (9.5)	0	0.5
Postoperative complication, n (%)	11 (52.4)	6 (28.0)	0.02
Cardiac complication	6 (28.6)	1 (4.8)	NS (0.09)
Respiratory complication	6 (28.6)	1 (4.8)	NS (0.09)
Infection	4 (19)	2 (9.5)	NS (0.70)
Hemorrhage	1 (4.8)	0	NS (1.00)
Reoperation	3 (14.3)	0	NS (0.23)
Other (pancreatitis, etc)	3 (14.3)	2 (9.5)	NS (1.00)

Continuous values were compared by the Mann-Whitney test and frequencies or percentages were tested by the Chi-squared or Fisher's exact test.

AAS = abdominal aortic surgery group; CAS = carotid artery surgery; NS = statistically no significance between the two groups.