Patient-related factors Definition score
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: claudication, carotid occlusion or >50% stenosis, previous or planned intervention on the abdominal aorta, limb arteries or carotids 2
Neurological dysfunction disease severely affecting ambulation or day-to-day functioning 2
Previous cardiac surgery requiring opening of the pericardium 3
Serum creatinine >200m micromol/L preoperatively 2
Active endocarditis patient still under antibiotic treatment for endocarditis at the time of surgery 3
any one or more of the following: ventricular tachycardia or fibrillation or aborted sudden death, preoperative cardiac massage, preoperative ventilation before arrival in the anaesthetic room, preoperative inotropic support, intra-aortic balloon counterpulsation or preoperative acute renal failure (anuria or oliguria<10 ml/hour) 3
Cardiac-related factors Definition Score
Unstable angina rest angina requiring iv nitrates until arrival in the
anaesthetic room
LV dysfunction moderate or LVEF30-50% 1
  poor or LVEF<30 3
Recent myocardial infarct (<90 days) 2
Pulmonary hypertension Systolic PA pressure>60 mmHg 2
Operation-related factors Definition Score
Emergency 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
Table 1: European System for Cardiac Operative Risk Evaluation (EuroSCORE).