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TIMI risk score for UA/NSTEMI

Also called TIMI score NSTEMI, TIMI unstable angina

14-day risk of death, MI or urgent revascularisation in unstable angina / NSTEMI.

TIMI score

0/7

14-day event rate
4.7%

Death, new/recurrent MI or severe recurrent ischaemia needing urgent revascularisation by day 14 was 4.7% at this score in the TIMI 11B derivation cohort. Higher scores gained more from enoxaparin.

Formula and scoring

One point each for 7 items (0–7). Event rates (TIMI 11B): 0–1 4.7%, 2 8.3%, 3 13.2%, 4 19.9%, 5 26.2%, 6–7 40.9%.

Exam and ward pearls

  • Aspirin use in the prior 7 days counts as a risk factor, a frequent exam point.

When not to rely on it

  • Derived in trial populations (TIMI 11B, ESSENCE) from the pre-high-sensitivity-troponin era.

Source

  1. Antman EM, Cohen M, Bernink PJ, et al. The TIMI risk score for unstable angina/non-ST elevation MI: a method for prognostication and therapeutic decision making. JAMA. 2000;284(7):835-42. doi:10.1001/jama.284.7.835 · PMID 10938172

Formula and cut-offs checked against these sources on 8 Nov 2026. Educational tool for clinicians; it does not replace clinical judgement.

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