PUBLIC LIBRARY / CALCULATOR

Duke Treadmill Score

Combines exercise time, ST deviation and angina during Bruce-protocol stress testing to estimate prognosis in suspected coronary disease.

Calculate with transparency

Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.

Preparing the form…

Check the method
Enter the data
Check the result

Method · Limits of application

Duke Treadmill/Mark 1987: time−5ST−4angina; nomogram validated 1991

The 1987 Duke Treadmill Score was developed for prognosis in people with chest pain undergoing treadmill testing and catheterization. The formula depends on the protocol’s conventions for time, ST deviation and angina index. Score prognosis does not confirm coronary disease or the safety of exercise testing in an individual.

Conditions of use

Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.

Documented parameters

Exercise duration (Bruce protocol) · min
Greatest ST deviation (in any lead except aVR) · mm
Angina during the test

3/3 reference cases checked. Numerical tests are not clinical validation.

Sources and documentation

Documented formula

Transcribed from the source or a recorded revision; this is not a clinical recommendation.

Score = exercise time (min) − 5 × ST deviation (mm) − 4 × angina index (0 = none, 1 = non-limiting, 2 = limiting).

References

Identifier: escore-de-duke

Original clinical content: Brazilian Portuguese.

Method version

Duke Treadmill/Mark 1987: time−5ST−4angina; nomogram validated 1991

escore-de-duke@native-2026-10-03+68bf426d89cc

Source for the active edition

The bibliographic edition identifies the source. By itself, it proves neither full conformity of the formula nor clinical approval.

Synthetic cases checked (3)

Synthetic cases for checking the implementation, with no patient data.

Case 1

reference-001

Inputs

Exercise duration (Bruce protocol): 9 min
Greatest ST deviation (in any lead except aVR): 1 mm
Angina during the test: Non-limiting

{
  "tempo": 9,
  "st": 1,
  "angina": "1"
}

Expected result

{
  "score": 0
}

Actual result

{
  "score": 0
}

Case 2

reference-002

Inputs

Exercise duration (Bruce protocol): 12 min
Greatest ST deviation (in any lead except aVR): 0 mm
Angina during the test: No

{
  "tempo": 12,
  "st": 0,
  "angina": "0"
}

Expected result

{
  "score": 12
}

Actual result

{
  "score": 12
}

Case 3

reference-003

Inputs

Exercise duration (Bruce protocol): 3 min
Greatest ST deviation (in any lead except aVR): 2 mm
Angina during the test: Limiting (reason for stopping)

{
  "tempo": 3,
  "st": 2,
  "angina": "2"
}

Expected result

{
  "score": -15
}

Actual result

{
  "score": -15
}

Code and reproducibility

This tool’s code on GitHub

Download code and tests

Sources, version and reproduction instructions

The code tests are technical checks. Clinical approval and professional translation review are recorded separately.

Relationship with cancer research

General context — relationship to be defined

A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.