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Thrombolysis in Myocardial Infarction (TIMI) risk index to predict short-term mortality after acute myocardial infarction

Thrombolysis in Myocardial Infarction (TIMI) risk index to predict short-term mortality after acute myocardial infarction
Risk index  Risk group Risk of death Risk of death
24 hours In-hospital 30 days
≤12.5 1 0.2 0.6 0.8
>12.5 to 17.5 2 0.4 1.5 1.9
>17.5 to 22.5 3 1.0 3.1 3.3
>22.5 to 30 4 2.4 6.5 7.3
>30 5 6.9 15.8 17.4
TIMI risk index is derived from the following formula: Heart rate in beats/min x ([age/10]squared) / systolic blood pressure.
Reproduced with permission from Morrow DA, Antman EM, Giugliano RP, et al. A simple risk index for rapid initial triage of patients with ST-elevation myocardial infarction: an InTIME II substudy. Lancet 2001; 358:1571. Copyright © 2001 The Lancet, Ltd.
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