The Cardiovascular
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TIMI Risk Index

Simple bedside index for early mortality risk in acute coronary syndrome.

TIMI Risk Index
Heart rate
bpm
Age
years
Systolic blood pressure
mmHg
Complete the fields above to see the result.

When to use

  • Rapid bedside mortality-risk stratification in suspected ACS/STEMI using only heart rate, age, and systolic BP - no labs required.

Formula

TIMI Risk Index = [heart rate x (age/10)^2] / systolic blood pressure.

Pearls and pitfalls

  • Derived and validated in >150,000 STEMI patients in the National Registry of Myocardial Infarction.
  • Uses only vital signs and age, making it usable before any labs or ECG interpretation are available.

References

  1. Wiviott SD, et al. J Am Coll Cardiol. 2004;44(4):783-9.