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| Risk | Score | |
| Age | 70‐74 | 7 |
| 75‐79 | 12 | |
| 80 | 20 | |
| Female | 1 | |
| Raised BMI | 3 | |
| Diabetes | 3 | |
| Hypertension | 3 | |
| Ejection Fraction | 30‐49% | 2 |
| <30% | 4 | |
| Reoperation 1 | 5 | |
| Reoperation 2+ | 10 | |
| Catheter disaster | 10 | |
| Congenital heart disease | 10 | |
| Preop IABP | 2 | |
| Mitral valve | 5 | |
| Aortic Valve | 7 | |
| PAP >60 | 8 | |
| Total Score | Risk | |
| 0‐4 | 1% | |
| 5‐9 | 5% | |
| 10‐14 | 9% | |
| 15‐19 | 17% | |
| >20 | 30% | |
