Duke Treadmill Score Calculator
Calculate Duke treadmill score from exercise duration, ST deviation, and angina index for cardiac risk stratification.
Duke Treadmill Score Overview
The Duke treadmill score predicts cardiac ischemia risk using Bruce protocol exercise time, maximum ST-segment deviation, and angina index. It helps stratify patients with suspected coronary artery disease. Also review cardiovascular risk with the DASI Calculator.
Formula
Duke score equals exercise duration in minutes minus 5 times maximum ST deviation in millimeters minus 4 times treadmill angina index (0 to 2).
Risk Categories
Scores of 5 or higher indicate low risk with about 99% four-year survival. Scores from -10 to +4 are intermediate (~95% survival). Scores below -10 indicate high risk (~79% survival).
Frequently Asked Questions
What is the Duke treadmill score formula?
Score = exercise minutes − 5 × ST deviation (mm) − 4 × angina index.
What angina index values are used?
0 = no angina, 1 = typical angina during exercise, 2 = test stopped for angina.
What score is low risk?
A Duke score of 5 or higher is classified as low risk.
Does this replace cardiology evaluation?
No. Duke score supports risk estimation but cannot replace formal cardiac assessment.
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