Cardiology
TIMI risk score (UA/NSTEMI)
The TIMI risk score estimates 14-day risk of death, myocardial infarction or urgent revascularization in unstable angina or NSTEMI. Seven equally weighted criteria, scored on arrival.
Enter the values
Result
0/ 7
Low
Low risk on this score. It does not exclude an acute coronary syndrome. Serial troponin and ECG still apply.
- 14-day risk of death, MI or urgent revascularization
- 4.7%
This calculator is provided for reference and education. It does not replace clinical assessment, examination, current guidelines, local protocol, or professional judgment. Verify every result before acting on it. Nirogix accepts no liability for clinical decisions made using this tool.
The formula
- One point for each of the seven criteria. Range 0 to 7.
Worked example
A 70-year-old on aspirin with ST depression and a raised troponin: 1 + 1 + 1 + 1 = 4, intermediate risk
When to use it
- Risk-stratifying a patient with unstable angina or NSTEMI on arrival
And when not to
- It is validated for UA/NSTEMI. It is not the score for STEMI, which has its own.
- A low score is not a discharge decision. It stratifies risk within a diagnosis, it does not make one.
References
- The TIMI risk score for unstable angina/non-ST elevation MI — Antman EM et al., JAMA, 2000
Last reviewed 07/09/2026.
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