Overall (n = 178) Group 1 (n = 90) Group 2 (n = 88)
P value
Mean ± SD or N (%) Mean ± SD or N (%) Mean ± SD or N (%)
Gender M/F 139/39 75/15 64/24 0.087
Age (y) 75±8 76±6 73±8 0.033
Previous MI 55 (31%) 29 (32%) 26 (29%) 0.669
NYHA class III-IV 86 (48%) 43 (48%) 43 (48%) 0.885
IDDM 9 (5%) 5 (5%) 4 (5%) 0.972
Hypertension 135 (76%) 65 (72%) 70 (80%) 0.254
Smoking history 120 (67%) 60 (67%) 60 (68%) 0.829
COPD 30 (17%) 16 (18%) 14 (16%) 0.739
Creatinine>200 µmol/l 5 (3%) 3 (3%) 2 (3%) 0.980
Cerebral stroke 9 (5%) 4 (4%) 5 (6%) 0.972
Extracardiac arteriopathy 25 (14%) 10 (11%) 15 (17%) 0.255
LVEF<30% 11 (6%) 3 (3%) 8 (9%) 0.199
Logistic EuroSCORE (%) 17±12 15±8 19±14 0.059
Previous operation(s)
Number of previous sternotomies 1 2 174 4 87 3 87 1
0.629
Interval time between actual and prior operations (years) 11.4 ± 6.4 10.9 ± 6.0 11.9 ± 6.8 0.349
Type of previous operations Isolated CABG Associated AVR Associated MVr/R Associated ARR 148 (83%)
20 (11%)
6 (3%)
2 (1%)
71 12 4 1 77 8 2 1 0.125 0.370 0.698 0.487
Type of conduits LIMA RIMA Radial artery Saphenous Vein 134 (75%) 2 (1%) 6 (3%) 162 (91%) 72 1 2 84 62 1 4 78 0.139 0.487 0.657 0.273
NYHA – New York Heart Association, IDDM – Insulin dependent diabetes mellitus, COPD – chronic obstructive pulmonary disease, LVEF – left ventricular ejection fraction, LIMA – Left internal mammary artery, RIMA – right internal mammary artery, CABG – coronary artery bypass grafting, MVr/R – mitral valve repair/ replacement, ARR – aortic root replacement, NYHA – New York Heart Association, IDDM – Insulin dependent diabetes mellitus, COPD – chronic obstructive pulmonary disease, LVEF – left ventricular ejection fraction, LIMA – Left internal mammary artery, RIMA – right internal mammary artery, CABG – coronary artery bypass grafting, MVr/R – mitral valve repair/ replacement, ARR – aortic root replacement, NYHA – New York Heart Association, IDDM – Insulin dependent diabetes mellitus, COPD – chronic obstructive pulmonary disease, LVEF – left ventricular ejection fraction, LIMA – Left internal mammary artery, RIMA – right internal mammary artery, CABG – coronary artery bypass grafting, MVr/R – mitral valve repair/ replacement, ARR – aortic root replacement, NYHA – New York Heart Association, IDDM – Insulin dependent diabetes mellitus, COPD – chronic obstructive pulmonary disease, LVEF – left ventricular ejection fraction, LIMA – Left internal mammary artery, RIMA – right internal mammary artery, CABG – coronary artery bypass grafting, MVr/R – mitral valve repair/ replacement, ARR – aortic root replacement, NYHA – New York Heart Association, IDDM – Insulin dependent diabetes mellitus, COPD – chronic obstructive pulmonary disease, LVEF – left ventricular ejection fraction, LIMA – Left internal mammary artery, RIMA – right internal mammary artery, CABG – coronary artery bypass grafting, MVr/R – mitral valve repair/ replacement, ARR – aortic root replacement,