Table 1.

Variables in the EuroSCORE.

Patient-related factors		Score	Beta
Age	Per 5 years or part thereof over 60 years	1	0.0666354
Sex	Female	1	0.3304052
Chronic pulmonary disease	Long-term use of bronchodilators or steroids for lung disease	1	0.4931341
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	0.6558917
Neurological dysfunction disease	Severely affecting ambulation or day-to-day functioning	2	0.841626
Previous cardiac surgery	Requiring opening of the pericardium	3	1.002625
Serum creatinine	>200 μmol/l preoperatively	2	0.6521653
Active endocarditis	Patient still under antibiotic treatment for endocarditis at the time of surgery	3	1.101265
Critical preoperative state	Any one or more of the following: VT or VF or aborted sudden death, cardiac massage, ventilation before arrival in the anaesthetic room, inotropic support, intra-aortic balloon counterpulsation or acute renal failure (anuria or oliguria <10 ml/hour)	3	0.9058132
Cardiac-related factors
Unstable angina	Rest angina requiring iv nitrates	2	0.5677075
LV dysfunction	Moderate or LVEF 30-50%	1	0.4191643
	Poor or LVEF <30	3	1.094443
Recent MI	<90 days	2	0.5460218
Pulmonary hypertension	Systolic PA pressure >60 mmHg	2	0.7676924
Operation-related factors
Emergency	Carried out on referral before the beginning of the next working day	2	0.7127953
Other than isolated CABG	Major cardiac procedure other than or in addition to CABG	2	0.5420364
Surgery on thoracic aorta	For disorder of ascending, arch or descending aorta	3	1.159787
Postinfarct septal rupture		4	1.462009

MI=myocardial infarction, VT=ventricular tachycardia, LVEF=left ventricular ejection fraction, PA=pulmonary artery, CABG=coronary artery bypass graft.