Table 1:
Pre-, peri- and postoperative characteristics of patients in the study group
| Data (n = 4615) | |
|---|---|
| Preoperative | |
| Age (years) | 65.6 [58.9–71.6] |
| Female (%) | 905 (19.6) |
| Body mass index (kg/m2) | 27.9 [25.4–30.9] |
| Diabetes (%) | 1694 (36.7) |
| Preoperative dialysis (%) | 19 (0.4) |
| Previous myocardial infarction (%) | 2257 (48.9) |
| Peripheral vascular disease (%) | 628 (13.6) |
| Hypertension (%) | 2774 (60.1) |
| Preoperative intra-aortic balloon pump (%) | 60 (1.3) |
| Ejection fraction | |
| Good (%) | 2755 (59.7) |
| Moderate (%) | 1449 (31.4) |
| Poor (%) | 411 (8.9) |
| Previous percutaneous coronary intervention (%) | 295 (6.4) |
| Status | |
| Elective (%) | 3715 (80.5) |
| Urgent (%) | 840 (18.2) |
| Emergency (%) | 60 (1.3) |
| Logistic EuroSCORE | 2.6 [1.5–5.1] |
| Preop haemoglobin | 13.9 [12.9–14.8] |
| Operative | |
| Left internal mammary artery (%) | 4232 (91.9) |
| No. of grafts | 3.3 (1.5–5.2) |
| Cardiopulmonary bypass time (min) | 109 [46–173] |
| Cross-clamp time | 65 [50–79] |
| Postoperative | |
| Intensive care length of stay (days) | 1 [1–2] |
| Hospital length of stay (days) | 7 [6–9] |
| Blood loss (ml) | 730 [500–1010] |
| Creatinine kinase muscle-brain isoenzyme (IU) | 15 [4–34] |
| Transfused (units) (%) | |
| 0 | 2537 (55) |
| 1 | 590 (12.8) |
| 2 | 708 (15.3) |
| 3 | 241 (5.2) |
| 4 | 190 (4.1) |
| ≥5 | 349 (7.6) |
| In-hospital mortality (%) | 97 (2.1) |
| Median survival (years) [range] | 5.3 [0–8.7] |
| Study period group mortality (%) | 475 (10.3) |
Continuous variables that are normally distributed are shown as mean with 95% confidence intervals shown in brackets. Continuous variables that are skewed in distributed are shown as median [25th–75th centiles]. Categorical variables are shown as numbers (percentage).
Ejection fraction was defined as good (EF ≥50%), moderate (EF ≥30–50%) and poor (EF <30%). Diabetes was defined as oral, medication or insulin controlled.