⚕️ For clinical reference only. Not a substitute for professional judgment.

TIMI Score UA/NSTEMI

Thrombolysis In Myocardial Infarction risk score for UA/NSTEMI — predicts 14-day risk of death, MI, or urgent revascularisation.

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Select risk factors

Tick all that apply to calculate 14-day event risk.

Risk Factors (1 point each)

Age ≥65 years +1 ≥3 CAD risk factors (FH, HTN, hypercholesterolaemia, DM, active smoker) +1 Known CAD (coronary stenosis ≥50%) +1 ST deviation ≥0.5 mm on presenting ECG +1 ≥2 anginal events in prior 24 hours +1 Aspirin use in past 7 days (paradoxically higher risk) +1 Elevated serum cardiac markers (troponin / CK-MB) +1

14-Day Event Risk

Score 0–1: ~5% event rate — Low risk Score 2: ~8% event rate — Low risk Score 3: ~13% event rate — Moderate risk Score 4: ~20% event rate — Moderate risk Score 5: ~26% event rate — High risk Score 6–7: ~41% event rate — High risk

When to use

UA/NSTEMI at presentation — alongside troponins and ECG
TIMI ≥3: early invasive strategy (angiography within 24–72h)
Complement with GRACE for dual risk assessment per NICE NG185
Not validated for STEMI — use primary PCI pathway

References

Antman EM et al. The TIMI risk score for UA/NSTEMI. JAMA. 2000;284(7):835–42.