Thrombolysis in Myocardial Infarction (TIMI) risk score for non-ST elevation acute coronary syndrome

Rates of all-cause mortality, myocardial infarction, and severe recurrent ischemia prompting urgent revascularization at 14 days after randomization according to the number of risk factors among patients with a non-ST elevation acute coronary syndrome in TIMI 11B and ESSENCE. The risk factors were age ≥65 years; presence of at least three risk factors for coronary disease; prior coronary stenosis of ≥50 percent; presence of ST segment deviation on admission electrocardiogram; at least two anginal episodes in prior 24 hours; use of aspirin in prior seven days; and elevated serum cardiac biomarkers. Event rates increased significantly as the TIMI risk score rose. Patients are considered to be at low risk with a score of 0 to 2, intermediate risk with a score of 3 to 4, and high risk with a score of 5 to 7.