Version May 2024
| Predictor | Definition | Risk points* |
| Age | Per 5 years or part thereof over 60 years | 1 |
| Sex | Female | 1 |
| Chronic pulmonary disease | Long-term use of bronchodilators or steroids for lung disease | 1 |
| Extracardiac arteriopathy | Any one or more of the following: | 2 |
| claudication | ||
| carotid occlusion or >50% stenosis | ||
| previous or planned intervention on the abdominal aorta, limb arteries, or carotids | ||
| Neurological dysfunction | Disease severely affecting ambulation or day-to-day functioning | 2 |
| Previous cardiac surgery | Requiring opening of the pericardium | 3 |
| Serum creatinine | >200 micromol/L (2.3 mg/dL) preoperatively | 2 |
| Active endocarditis | Patient still under antibiotic treatment for endocarditis at the time of surgery | 3 |
| Critical preoperative state | Any one or more of the following: | 3 |
| ventricular tachycardia or fibrillation or aborted sudden death | ||
| preoperative cardiac massage | ||
| preoperative ventilation before arrival in the anesthetic room | ||
| preoperative inotropic support | ||
| intraaortic balloon counterpulsation | ||
| preoperative acute renal failure (anuria or oliguria <10 mL/hour) | ||
| Unstable angina | Rest angina requiring IV nitrates until arrival in the anesthetic room | 2 |
| LV dysfunction | Moderate or LV ejection fraction 30 to 50% | 1 |
| Poor or LV ejection fraction <30% | 3 | |
| Recent myocardial infarct | <90 days | 2 |
| Pulmonary hypertension | Systolic pulmonary artery pressure >60 mmHg | 2 |
| Emergency operation | Carried out on referral before the beginning of the next working day | 2 |
| Other than isolated CABG | Major cardiac procedure other than or in addition to CABG | 2 |
| Surgery on thoracic aorta | For disorder of ascending, arch or descending aorta | 3 |
| Postinfarct septal rupture | 4 |
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