TIMI Risk Score (UA / NSTEMI)
TIMI risk score for UA/NSTEMI (Antman 2000): age >= 65, >= 3 CAD risk factors, known CAD >= 50%, ASA in past 7 days, severe angina, ST deviation >= 0.5 mm, elevated markers (1 each).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Age >= 65
- Yes
- >= 3 CAD risk factors
- Yes
- ASA in past 7 days
- Yes
Result: TIMI 3 - intermediate risk band.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-1
- 14-day risk of all-cause mortality, new/recurrent MI, or severe ischemia requiring urgent revascularization: 4.7% per source.
- 2
- 14-day composite risk: 8.3% per source.
- 3
- 14-day composite risk: 13.2% per source.
- 4
- 14-day composite risk: 19.9% per source.
- 5
- 14-day composite risk: 26.2% per source.
- 6-7
- 14-day composite risk: 40.9% per source.
What you enter
- Age >= 65 (1)
- >= 3 CAD risk factors (1)
- Known CAD (>= 50% stenosis) (1)
- ASA in past 7 days (1)
- Severe angina (>= 2 episodes in 24 h) (1)
- ST deviation >= 0.5 mm (1)
- Elevated cardiac markers (1)
What this is
Compute the TIMI Risk Score for unstable angina and non-ST elevation MI (Antman 2000) from its seven binary inputs: age >=65, three or more CAD risk factors, known coronary stenosis >=50%, ST deviation on the presenting ECG, two or more anginal events in 24 hours, aspirin use in the prior seven days, and elevated cardiac markers. Sophie Well returns the 0-7 total and the published 14-day rate of all-cause mortality, new or recurrent MI, or urgent revascularization.
When to use it
Use this at first contact for a patient with suspected NSTE-ACS to triage disposition and stratify intensity of antiplatelet, anticoagulant, and invasive strategy. TIMI is one of several risk tools (HEART, GRACE) used in this space; in the ED, HEART is often preferred for undifferentiated chest pain because it incorporates clinician gestalt, while TIMI is most informative once ACS is the working diagnosis.
How this is calculated
Antman EM, et al. The TIMI Risk Score for Unstable Angina/Non-ST Elevation MI. JAMA. 2000;284(7):835-842. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
More in Cardiology.