TIMI Risk Index Calculator
This calculator estimates the TIMI Risk Index, a simple bedside score used to assess the risk of mortality in patients with ST-elevation myocardial infarction (STEMI). Based on age, heart rate, and systolic blood pressure, it helps clinicians quickly evaluate a patient’s prognosis and prioritize interventions.
Calculate TIMI Risk Index
TIMI Risk Index Formula
Explanation:
- Heart Rate: measured in beats per minute (bpm)
- Age: in years
- Systolic Blood Pressure: in mmHg
The result is a dimensionless index. A higher TIMI Risk Index indicates a greater risk of mortality in acute myocardial infarction.
The TIMI Risk Index is a practical scoring tool derived from clinical trials to assess early risk in patients with acute coronary syndrome. It’s especially valuable in emergency settings where rapid risk stratification is necessary. The score is easy to calculate and has been shown to correlate with 30-day and in-hospital mortality. For example, a 70-year-old patient with a heart rate of 100 bpm and systolic BP of 120 mmHg would have a TIMI Risk Index of: $$100 × (70 / 10)² / 120 = 100 × 49 / 120 ≈ 40.83$$