Thrombolysis in Myocardial Infarction (TIMI) Score 

Updated: Jan 06, 2020
Author: Buck Christensen;

Thrombolysis in Myocardial Infarction (TIMI) Score

The Thrombolysis in Myocardial Infarction (TIMI) Score is used to determine the likelihood of ischemic events or mortality in patients with unstable angina or non–ST-segment elevation myocardial infarction (NSTEMI).[1, 2, 3, 4, 5, 6]

Each of the following criteria constitutes one point for TIMI scoring[6] :

  • Age ≥65 years

  • Three or more risk factors for coronary artery disease (CAD) (family history of CAD, hypertension, hypercholesterolemia, diabetes mellitus, tobacco use)

  • Known CAD (stenosis ≥50%)

  • Aspirin use in the past 7 days

  • Severe angina (≥2 episodes in 24 hours)

  • ST deviation ≥0.5 mm

  • Elevated cardiac marker level

The risk of death / MI / urgent revascularization by Day 14 (rounded to nearest %) based on TIMI score is as follows[6] :

  • 0-1: 5%
  • 2: 8%
  • 3: 13%
  • 4: 20%
  • 5: 26%
  • 6-7: 41%

See also Medscape Reference’s TIMI Score calculator

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