Table 1.
Risk factor | No (%) of patients (n=8572) |
---|---|
Mean age at operation in years (range) | 62.9 (31.3 to 88) |
Female | 1809 (21.1) |
Angina class IV | 1894 (22.1) |
Myocardial infarction within 3 months | 540 (6.3) |
Respiratory disease | 1603 (18.7) |
Renal dysfunction | 197 (2.3) |
Peripheral vascular disease | 1063 (12.4) |
Cerebrovascular disease | 703 (8.2) |
Ejection fraction <30% | 471 (5.5) |
Intra-aortic balloon pump support | 94 (1.1) |
Ventilation support | 9 (0.1) |
Cardiogenic shock | 43 (0.5) |
Intravenous nitroglycerin | 531 (6.2) |
Urgent surgery | 1706 (19.9) |
Emergency surgery | 146 (1.7) |