Perioperative Cardiac Risk Calculator (Revised Lee Index)

Calculate RCRI (Revised Cardiac Risk Index) for non-cardiac surgery. Predicts risk of major adverse cardiac events (MACE) based on 6 independent risk factors.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate RCRI (Revised Cardiac Risk Index) for non-cardiac surgery. Predicts risk of major adverse cardiac events (MACE) based on 6 independent risk factors

Each component has a specific meaning:

  • 6 independent risk factors — The 6 independent risk factors recorded for the patient or scenario being assessed.

Note: Interpret the perioperative cardiac risk result against the clinical thresholds and context described above.

How to Use

Enter the 6 independent risk factors for the patient or scenario you are assessing. Calculate RCRI (Revised Cardiac Risk Index) for non-cardiac surgery. Predicts risk of major adverse cardiac events (MACE) based on 6 independent risk factors. Use the perioperative cardiac risk result to inform your clinical assessment.

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Frequently Asked Questions