Table 2.
Preoperative characteristics of patients
| Variable | Crystalloid cardioplegia [no = 50] | Blood cardioplegia [no = 50] | p value |
|---|---|---|---|
| Age* |
61 ± 12 |
63 ± 9 |
0.651 |
| Male |
37 |
39 |
0.466 |
| Smoking |
34 |
29 |
0.012 |
| COPD |
12 |
14 |
0.834 |
| Hypertension |
25 |
21 |
0.543 |
| Congestive heart failure (no) |
2 |
3 |
0.335 |
| Peripheral vascular disease |
11 |
9 |
0.746 |
| Cerebral vascular disease |
6 |
7 |
1.00 |
| Average body surface area (BSA m2) |
1.91 ± 0.5 |
1.89 ± 2.2 |
0.855 |
| Body mass index (kg/m2)* |
33.4 ± 4.2 |
29.3 ± 6.8 |
0.455 |
| Ejection fraction (%)* |
45.6 ± 7.8 |
50.1 ± 3.6 |
0.023 |
| Preoperative IABP |
2 |
- |
0.242 |
| Number of diseased vessels* (range 1–4) |
2.1 ± 0.4 |
1.9 ± 0.6 |
0.744 |
| LMCA disease (>50%) |
5 |
3 |
0.721 |
| Previous MI |
31 |
37 |
0.462 |
| Previous PTCA or stent |
8 |
11 |
0.631 |
| Preoperative hematocrit value (%) |
38.5 ± 3.7 |
40.4 ± 5.6 |
0.563 |
| Preoperative hemoglobine value (gr/dL) | 13.3 ± 2.3 | 13.9 ± 2.9 | 0.646 |
*mean ± SD.
Abbrevations: COPD chronic obstructive pulmonary disease, IABP IABP intra-aortic balloon pump, LMCA left main coronary artery, MI myocardial infarction, PTCA Percutaneous transluminal balloon angioplasty.