European System for Cardiac Operative Risk Evaluation (EuroSCORE) II

Predicted mortality = e y / (1 + e y ) Where y = -5.324537 + ∑ β i x i Patient factors Variable Coefficient (β) Age* 0.0285181 Sex Male 0 Female 0.2196434 Insulin-dependent diabetes mellitus 0.3542749 Chronic pulmonary dysfunction 0.1886564 Neurological or musculoskeletal dysfunction severely affecting mobility 0.2407181 Renal dysfunction ( creatinine clearance by Cockcroft-Gault formula) >85 mL/min 0 51-85 mL/min 0.303553 ≤50 mL/min 0.8592256 On dialysis, regardless of serum creatinine 0.6421508 Critical preop state (≥1 of the following in the same hospital admission as the operation: ventricular tachycardia or fibrillation or aborted sudden death; cardiac massage; ventilation before arrival to OR; inotropes; IABP or VAD before arrival to OR; acute renal failure, defined as anuria or oliguria <10 mL/hr) 1.086517 *For age, x i = 1 if patient age ≤60; x i increases by one point per year thereafter (age ≤60, x i = 1; age 61, x i = 2; age 62, x i = 3, etc). Cardiac-specific factors Variable Coefficient (β) NYHA class Class I: no symptoms on moderate exertion 0 Class II: symptoms on moderate exertion 0.1070545 Class III: symptoms on light exertion 0.2958358 Class IV: symptoms at rest 0.5597929 CCS class 4 (inability to perform any activity without angina or angina at rest) 0.2226147 Extracardiac arteriopathy (≥1 of the following: claudication; carotid occlusion or >50% stenosis (NASCET criteria); amputation for arterial disease; previous or planned intervention on abdominal aorta, limb arteries, or carotids) 0.5360268 Previous cardiac surgery (≥1 previous major cardiac operation involving opening the pericardium) 1.118599 Active endocarditis (i.e., on antibiotics for endocarditis at time of surgery) 0.6194522 LV function or LVEF Good (LVEF ≥51%) 0 Moderate (LVEF 31-50%) 0.3150652 Poor (LVEF 21-30%) 0.8084096 Very poor (LVEF ≤20%) 0.9346919 Recent MI (≤90 days before operation) 0.1528943 Pulmonary artery systolic pressure, mm Hg <31 0 31-54 0.1788899 ≥55 0.3491475 Procedural factors Variable Coefficient (β) Urgency Elective: routine admission for operation 0 Urgent: not electively admitted for operation but require surgery on current admission for medical reasons and cannot be discharged without definitive procedure 0.3174673 Emergency: operation before the beginning of the next working day after the decision to operate 0.7039121 Salvage: patients requiring CPR (external) en route to the OR or before induction of anesthesia (excludes CPR after induction of anesthesia) 1.362947 “Weight” of procedure (i.e., extent of intervention) Isolated CABG 0 Isolated non-CABG major procedure (e.g. single valve procedure, replacement of ascending aorta, correction of septal defect, etc) 0.0062118 2 major procedures (e.g. CABG and AVR), or CABG and mitral valve repair (MVR), or AVR and replacement of ascending aorta, or CABG and maze procedure, or AVR and MVR, etc 0.5521478 ≥3 major procedures (e.g. AVR, MVR, and CABG, or MVR, CABG, and tricuspid annuloplasty, etc), or aortic root replacement when it includes AVR or repair, coronary reimplantation, and root and ascending replacement 0.9724533 Thoracic aorta surgery 0.6527205