Table 3: Preoperative characteristics of propensity-matched patients.

VariableOff-pump
( )
On-pump
( )
value

Age (years ± SD) 0.93
Male219 (71.3)211 (68.7)0.87
BMI 0.91
Diabetes 108 (35.2)99 (32.2)0.76
Hypertension 163 (53.1)172 (56.0)0.87
Never smoked 99 (32.2)114 (37.1)0.78
Hypercholesterolemia139 (45.3)143 (46.6)0.83
COPD 25 (8.1)27 (8.8)0.91
CCS ≥ 3 79 (25.7)82 (26.7)0.87
NYHA ≥ 2 166 (54.1)179 (58.3)0.74
PVD 27 (8.8)20 (6.5)0.42
MI in 30 days prior to CABG 79 (25.7)81 (26.4)0.89
Preoperative serum creatinine ≥ 200  mol·L−113 (4.2)7 (2.3)0.34
<30% ejection fraction16 (5.2)19 (6.2)0.83
30–49% ejection fraction69 (22.5)76 (24.8)0.87
≥50% ejection fraction222 (72.3)212 (69.0)0.81
Preoperative IV nitrates 20 (6.5)23 (7.5)0.87
Preoperative IV inotropes 1 (0.3)1 (0.3)1.0
Preoperative IABP 19 (6.2)20 (6.5)0.91
Previous PCI13 (4.2)13 (4.2)1.0
CVA/TIA5/4 (2.9)3/6 (2.9)1.0
LMS stenosis > 50% 119 (38.8)159 (40.4)0.54
Two vessels112 (36.5)101 (32.9)0.29
Three vessels195 (63.5)209 (68.1)0.45
Urgent101 (32.9)113 (37.1)0.53
Logistic EuroSCORE (mean ± SD) 0.71

Values in parentheses are percentages.
BMI: body mass index; CABG: coronary artery bypass grafting; CCS: Canadian Cardiovascular Society; COPD: chronic obstructive pulmonary disease; CVA: cerebrovascular accident; IABP: intra-aortic balloon pump; LMS: left main stem; MI: myocardial infarction; NHYA: New York Heart Association; PCI: percutaneous coronary intervention; PVD: peripheral vascular disease; SD: standard deviation; TIA: transient ischemic attack.