Table 2.

Demographic profile and the risk factors of the patients.

	Group A	Group B
No. of patients	75	73
Mean age (years)	60.2 ± 8.4	58.6 ± 6.4
Female (%)	38 (50.6)	42 (57.5)
Smoking (%)	45 (60.0)	43 (58.9)
COPD* (%)	3 (4.0)	4 (5.4)
Diabetes mellitus (%)	30 (40)	28 (38.3)
Renal failure (%)	3 (4)	5 (6.8)
Hipertension (%)	50 (66.6)	48 (65.7)
LIMA harvest* (%)	69 (92.0)	66 (90.4)
Mean no. of bypass grafts	3.05 ± 0.7	3.12 ± 1.1
Mean CPB time	71.7 ± 9.0	74.2 ± 8.9
Left ventricle EF (%)*	52.4 ± 3.6	48.1 ± 5.6

LIMA = Left internal mammarian artery, *COPD = Chronic obstructive pulmonary disease, CPB = Cardiopulmonary bypass, EF = Ejection fraction.