Revised Cardiac Risk Index (RCRI / Lee) — free guideline decision tool
Estimate peri-operative cardiac risk for noncardiac surgery with the Revised Cardiac Risk Index.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| High-risk surgery (intraperitoneal/thoracic/suprainguinal vascular) | No |
|---|---|
| Ischaemic heart disease | No |
| History of congestive heart failure | No |
| History of cerebrovascular disease | No |
| Insulin-dependent diabetes | No |
| Creatinine > 2.0 mg/dL | No |
→RCRI0
- Risk class：Class I — major cardiac event ~0.4% (original estimates)
- Use：≥ 1 factor and elevated surgical risk may prompt further cardiac evaluation/biomarkers.
| High-risk surgery (intraperitoneal/thoracic/suprainguinal vascular) | Yes (+1) |
|---|---|
| Ischaemic heart disease | Yes (+1) |
| History of congestive heart failure | Yes (+1) |
| History of cerebrovascular disease | Yes (+1) |
| Insulin-dependent diabetes | Yes (+1) |
| Creatinine > 2.0 mg/dL | Yes (+1) |
→RCRI6
- Risk class：Class IV — major cardiac event ~11% (original estimates)
- Use：≥ 1 factor and elevated surgical risk may prompt further cardiac evaluation/biomarkers.
Common questions
What is Revised Cardiac Risk Index (RCRI / Lee)?
Estimate peri-operative cardiac risk for noncardiac surgery with the Revised Cardiac Risk Index.
How is Revised Cardiac Risk Index (RCRI / Lee) calculated? What is the core formula?
1 point each: high-risk surgery, ischaemic heart disease, heart failure, cerebrovascular disease, insulin-dependent diabetes, creatinine > 2.0 mg/dL.
When is Revised Cardiac Risk Index (RCRI / Lee) used?
Pre-operative cardiac risk assessment.
What are the key clinical points for Revised Cardiac Risk Index (RCRI / Lee)?
More factors → higher major cardiac event risk. Newer cohorts give somewhat higher absolute risks. Combine with functional capacity and surgery-specific risk.
What are the limits and cautions when using Revised Cardiac Risk Index (RCRI / Lee)?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is Revised Cardiac Risk Index (RCRI / Lee) calculated in practice? Can you show a worked example?
Inputs: High-risk surgery (intraperitoneal/thoracic/suprainguinal vascular) No, Ischaemic heart disease No, History of congestive heart failure No, History of cerebrovascular disease No, Insulin-dependent diabetes No, Creatinine > 2.0 mg/dL No → Result: RCRI 0（Risk class: Class I — major cardiac event ~0.4% (original estimates), Use: ≥ 1 factor and elevated surgical risk may prompt further cardiac evaluation/biomarkers.） Inputs: High-risk surgery (intraperitoneal/thoracic/suprainguinal vascular) Yes (+1), Ischaemic heart disease Yes (+1), History of congestive heart failure Yes (+1), History of cerebrovascular disease Yes (+1), Insulin-dependent diabetes Yes (+1), Creatinine > 2.0 mg/dL Yes (+1) → Result: RCRI 6（Risk class: Class IV — major cardiac event ~11% (original estimates), Use: ≥ 1 factor and elevated surgical risk may prompt further cardiac evaluation/biomarkers.）
Run Revised Cardiac Risk Index (RCRI / Lee) now
Estimate peri-operative cardiac risk for noncardiac surgery with the Revised Cardiac Risk Index.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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