STS Risk Calculator: Isolated CABG

Adult Cardiac Surgery Database
Answer All Questions for Accurate Estimates

Required Fields

Sex
Age (Years)
Value out of usual range, disregard if correct.
Coronary Artery Disease Coronary Disease
Redo CABG
Surgical Priority
Answer All Questions for Accurate Estimates

Demographics

Height
Value out of usual range, disregard if correct.
Weight
Value out of usual range, disregard if correct.
Race/Ethnicity
Payor/Insurance

Laboratory Values

Creatinine
Value out of usual range, disregard if correct.
Hematocrit
Value out of usual range, disregard if correct.
WBC Count
Value out of usual range, disregard if correct.
Platelet Count
Value out of usual range, disregard if correct.
Total Albumin
Value out of usual range, disregard if correct.
Total Bilirubin
Value out of usual range, disregard if correct.
INR (Ratio)
Value out of usual range, disregard if correct.

Preoperative Medications

ADP Inhib. Discontinued (when, days)

Risk Factors/Comorbidities

Diabetes
Endocarditis
Illicit Drug Use
Alcohol Use
Tobacco Use

Pulmonary

Chronic Lung Disease Chronic Lung Disease

Vascular

Cerebrovascular Disease Cerebrovascular Dis.

Cardiac Status

Heart Failure
NYHA Classification
Mech Circ Support
Ejection Fraction (%)
Value out of usual range, disregard if correct.

Coronary Artery Disease

Primary Symptom
Please answer Timing of MI field below
Myocardial Infarct-when
Previous PCI

Valve Disease

Aortic Regurgitation
Mitral Regurgitation
Tricuspid Regurgitation

Arrhythmia

Atrial Fibrillation
Atrial Flutter
V. Tach / V. Fib
Sick Sinus Syn.
2ⁿᵈ Degree Block
3ʳᵈ Degree Block

Previous Cardiac Interventions

Surgery Incidence
Valve Procedures
Other Cardiac

Calculations

BMI (kg/m²)
BSA (m²)
MELD Score
This application was developed and implemented at the STS Research and Analytic Center; (App Version: 2.0.0; Last Updated: November 20, 2025)
Contact the STS Research and Analytic Center
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