Table 1 Pre- and intraoperative characteristics
Unmatched analysis
Overall (n = 349) Redo-OPCAB (n = 143) Redo-CABG (n = 206) P-value
Age (years) 66.6 (8.5) 67.8 (8.1) 65.7 (8.6) 0.02
Female gender (%) 53 (15) 21 (15) 32 (15.5) 0.82
BMI (kg/m2) 27.2 (4.2) 27.9 (4.4) 26.9 (4.7) 0.07
Reduced LVEF <50% 117 (33) 46 (32) 71 (34) 0.65
Diabetes (%) 78 (22) 31 (22) 47 (23) 0.80
Hypertension (%) 252 (72) 110 (77) 142 (69) 0.08
CKD (%) 6 (2) 2 (1) 4 (2) 0.70
Preoperative creatinine (µmol/l) 103.1 (29) 101.8 (26.3) 103.9 (30.8) 0.52
eGFR (ml/min/1.73 m2) 64.4 (16.8) 64.7 (16.4) 64.2 (17.1) 0.76
Previous CVA (%) 40 (11) 18 (13) 22 (11) 0.56
PVD (%) 72 (21) 38 (27) 34 (16) 0.02
COPD (%) 53 (15) 25 (17) 28 (14) 0.31
Smoking history (%) 266 (76) 110 (77) 156 (76) 0.76
EuroSCORE 7 (2.7) 6.9 (2.5) 7.2 (2.8) 0.49
NYHA Class 3 or 4 (%) 149 (43) 53 (37) 96 (47) 0.10
CCS Class 3 or 4 (%) 228 (65) 89 (62) 139 (67) 0.37
Urgent surgery (%) 138 (39) 57 (40) 81 (39) 0.91
Previous surgical procedure (%) 0.03
 CABG 273 (78) 100 (71) 173 (83)
 Valve 43 (12) 23 (16) 20 (10)
 CABG + valve ± other 33 (9) 18 (13) 15 (7)
Number of diseased vessels 2.4 (0.7) 2.3 (0.8) 2.6 (0.6) <0.01
Use of nitrates (%) 53 (15) 19 (13) 34 (16) 0.41
Number of grafts 2.5 (0.7) 2.3 (0.8) 2.6 (0.6) <0.01
Use of IMA (%) 175 (50) 81 (57) 94 (46) 0.06
Use of radial artery (%) 67 (19) 32 (22) 35 (17) 0.26
Data are reported as mean and SD for continuous variables and as total count and percentages for categorical variables.
BMI: body mass index; LVEF: left ventricular ejection fraction; CKD: chronic kidney disease; eGFR: estimated glomerular filtration rate; CVA: cerebrovascular accident; PVD: peripheral vascular disease; COPD: chronic obstructive pulmonary disease; NYHA: New York Heart Association; CCS: Canadian Cardiovasular Society; CABG: coronary artery bypass grafting; CAD: coronary artery disease; IMA: internal mammary artery.