Loading...
Printed on 4/19/2026
For informational purposes only. This is not medical advice.
The Revised Cardiac Risk Index (RCRI, Lee criteria) estimates 30-day risk of major cardiac complications in patients undergoing non-cardiac surgery. It assigns one point for each of six predictors and stratifies patients into risk classes to support preoperative planning.
Formula: RCRI score = sum of 6 predictors (0-6). Class I: 0, Class II: 1, Class III: 2, Class IV: >=3.
Higher RCRI scores indicate greater short-term risk of perioperative major cardiac complications after non-cardiac surgery.
Use RCRI during preoperative assessment for adult patients undergoing non-cardiac surgery when estimating perioperative cardiac event risk.
RCRI does not include all modern perioperative factors and may underperform in certain high-complexity populations. It should be combined with guideline-based evaluation and clinician judgment.
For related assessments, see ASA Class, Duke Treadmill Score and ASCVD Risk Calculator.
Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.
Classify preoperative physical status using the ASA I–VI system for anesthetic risk stratification. ASA III+ indicates significant systemic disease requiring special perioperative planning and precautions.
CardiologyCalculate the Duke Treadmill Score for cardiac risk stratification from exercise stress testing. Uses exercise time, ST deviation, and angina symptoms.
CardiologyCalculate 10-year ASCVD risk using current 2026 ACC/AHA Pooled Cohort Equations. Statin thresholds: <5% low, 5–7.5% borderline, ≥7.5% intermediate, ≥20% high.
ClinicalCalculate eGFR with the CKD-EPI 2021 race-free formula to estimate kidney function and CKD stage from serum creatinine, age, and sex.