Anesthesiology

Revised Cardiac Risk Index (RCRI)

Revised Cardiac Risk Index (RCRI)

RCRI (Lee Index)

Estimates risk of major cardiac complications after non-cardiac surgery.
High-risk surgery
Intraperitoneal, intrathoracic, or suprainguinal vascular
Ischemic heart disease
History of MI, positive stress test, ischemia-related chest pain, or Q waves
Congestive heart failure
History of pulmonary edema, PND, S3 gallop, or vascular redistribution on CXR
Cerebrovascular disease
Prior history of stroke or TIA
Pre-op Insulin Use
Current treatment with insulin for diabetes
Creatinine > 2.0 mg/dL
Pre-operative serum creatinine > 176.8 µmol/L
0
Points
Low Risk
No elevated risk factors.
Estimated Risk: 0.5%
PointsRisk GroupApprox. Event Risk
0Class I (Low)0.5%
1Class II (Elevated)1.1%
2Class III (Elevated)5%
≥ 3Class IV (Elevated)10%
1
Elevated Risk Protocol: If RCRI ≥ 1, patient age ≥ 65, or 45-64 with significant cardiac disease, consider obtaining NT-proBNP or BNP.
2
Post-op Monitoring: If NT-proBNP ≥ 300 ng/L or BNP ≥ 92 ng/L, order an EKG in the PACU and measure troponins daily for 48-72 hours.
3
Limitations: RCRI may underestimate hemodynamic complications in patients with valvular disease. It does not assess risk of stroke or bleeding.
Clinical decision support only. Final decisions belong to the physician.
References:
  • Lee TH, et al. Derivation and prospective validation of a simple index for prediction of cardiac risk of major noncardiac surgery. Circulation. 1999;100(10):1043-1049.
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Reviewed by ·
Semahattin Serkan Sezer MD

Pulmonologist and Intensive Care Specialist specializing in clinical informatics and the development of evidence-based decision support tools for healthcare professionals.