Table 4.
Preoperative demographic and clinical data for the 26–27 mm group and the 28–29 mm group.
| Variables | 26–27 mm (n = 38) | 28–29 mm (n = 44) | P |
|---|---|---|---|
| Age [years] | 60.42 ± 8.19 | 57.86 ± 9.33 | 0.194 |
| Sex (male) | 31 (81.58%) | 39 (88.64%) | 0.367 |
| Body surface area [m2] | 1.91 ± 0.15 | 1.87 ± 0.12 | 0.151 |
| EUROscore | 5.58 ± 1.22 | 5.73 ± 1.17 | 0.576 |
| Diabetes | 11 (28.95%) | 12 (27.27%) | 0.866 |
| Hypertension | 23 (60.53%) | 24 (54.55%) | 0.585 |
| Hyperlipidemia | 15 (39.47%) | 19 (43.18%) | 0.734 |
| COPD | 2 (5.26%) | 2 (4.55%) | 0.881 |
| Carotid artery stenosis | 2 (5.26%) | 2 (4.55%) | 0.881 |
| History of PCI | 3 (7.89%) | 3 (6.82%) | 0.852 |
| History of heart failure | 7 (18.42%) | 7 (15.91%) | 0.763 |
| Atrial fibrillation | 8 (21.05%) | 4 (9.09%) | 0.125 |
| Aneurysm | 4 (10.53%) | 3 (6.82%) | 0.549 |
| Grade on CCS angina scale: | |||
| No angina | 13 (34.21%) | 16 (36.36%) | 0.839 |
| Class III or IV | 6 (15.79%) | 7 (15.91%) | 0.988 |
| NYHA class III or IV | 24 (63.16%) | 22 (50.00%) | 0.231 |
| Left main CAD | 12 (31.58%) | 11 (25.00%) | 0.470 |
| Distal anastomoses: | 0.186 | ||
| 1 | 2 (5.26%) | 2 (4.55%) | |
| 2–4 | 27 (71.05%) | 38 (88.64%) | |
| > 4 | 9 (23.68%) | 4 (6.82%) | |
| Anastomoses/patient | 3.58 ± 1.15 | 3.42 ± 0.79 | 0.475 |
| Grafts/patient | 2.87 ± 0.70 | 2.86 ± 0.77 | 0.962 |
| LIMA | 34 (89.47%) | 39 (88.64%) | 0.904 |
| ACC time [min] | 107.24 ± 21.94 | 104.50 ± 33.31 | 0.658 |
| CPB time [min] | 153.97 ± 32.94 | 145.91 ± 37.81 | 0.310 |
| Mechanical ventilation time [h] | 28.76 ± 23.88 | 26.56 ± 15.08 | 0.619 |
| ICU stay time [h] | 89.86 ± 71.45 | 56.27 ± 27.97 | 0.012 |
Data are shown as mean ± standard deviation or number (percentage). COPD — chronic obstructive pulmonary disease; PCI — percutaneous coronary intervention; CCS — Canadian Cardiovascular Society; NYHA — New York Heart Association functional class; CAD — coronary artery disease; CABG — coronary artery bypass graft; IABP — intra-aortic balloon pump; LIMA — left internal mammary artery; ACC — aortic cross-clamp; CPB — cardiopulmonary bypass; ICU — intensive care unit