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TIMI Risk Score for UA/NSTEMI

Health
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Estimates mortality risk for patients with unstable angina or non-ST elevation myocardial infarction.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Age (years), Presence of ≥3 Risk Factors for CAD (e.g., HTN, DM, FHx), Known CAD (prior stenosis ≥50%), Severe Angina (≥2 episodes in past 24 hours), Use of Aspirin in the past 7 days, Elevated Cardiac Biomarkers, and ST Segment Changes on ECG (≥0.5 mm) in the units shown.

Step 2

Read Total TIMI Risk Score, Estimated Mortality Risk (at 14 days), and Risk Category in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Low Risk Example

Age (years): 55; Presence of ≥3 Risk Factors for CAD (e.g., HTN, DM, FHx): 0; Known CAD (prior stenosis ≥50%): 0; Severe Angina (≥2 episodes in past 24 hours): 0; Use of Aspirin in the past 7 days: 1; Elevated Cardiac Biomarkers: 0; ST Segment Changes on ECG (≥0.5 mm): 0

Total TIMI Risk Score: 1 points; Estimated Mortality Risk (at 14 days): < 3% %; Risk Category: Low Risk

Intermediate Risk Example

Age (years): 68; Presence of ≥3 Risk Factors for CAD (e.g., HTN, DM, FHx): 1; Known CAD (prior stenosis ≥50%): 1; Severe Angina (≥2 episodes in past 24 hours): 0; Use of Aspirin in the past 7 days: 1; Elevated Cardiac Biomarkers: 0; ST Segment Changes on ECG (≥0.5 mm): 0

Total TIMI Risk Score: 4 points; Estimated Mortality Risk (at 14 days): 5-8% %; Risk Category: Intermediate Risk

High Risk Example

Age (years): 70; Presence of ≥3 Risk Factors for CAD (e.g., HTN, DM, FHx): 1; Known CAD (prior stenosis ≥50%): 1; Severe Angina (≥2 episodes in past 24 hours): 1; Use of Aspirin in the past 7 days: 0; Elevated Cardiac Biomarkers: 1; ST Segment Changes on ECG (≥0.5 mm): 1

Total TIMI Risk Score: 6 points; Estimated Mortality Risk (at 14 days): 12-19% %; Risk Category: High Risk

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Important

Use the result as an estimate and confirm any medical decisions with a qualified professional.