Logo

OpiCalc

FavoritesSpecialtiesDrugsGuidelinesMost Used

Quick Access

Favorites
Most Used

All Specialties

OpiCalc Logo
Clinical CalculatorsDrugsGuidelines
SpecsDrugsGuides
ABC-AF Bleeding ScoreABC-AF Stroke ScoreABCD2 ScoreADD-RSAortic Valve Calcium ScoreAPPLE ScoreASCVD (Pooled Cohort)AVA (Continuity Equation)BAG-AHF ScoreBiplane Simpson EFBlood Pressure PercentilesBrugada Criteria (VT vs SVT)Cardiac Output IndexCHA2DS2-VAScCHADS2Cornell Voltage CriteriaCRUSADE Bleeding ScoreDAPT ScoreDASIDuke Treadmill ScoreE/A RatioEDACS ScoreEHMRGEHRA ScoreEmbolic Risk ScoreEROA (PISA Method)FFR (Fractional Flow Reserve)Fick Cardiac OutputFramingham 10-Year RiskFriedewald LDL EquationGorlin EquationGRACE ScoreGupta MICA (NSQIP)GWTG-HF ScoreH2FPEF ScoreHakki FormulaHAS-BLEDHEART PathwayHEART ScoreHEMORR2HAGEShs-Troponin 0h/1h ESC AlgorithmiFRINTERCHEST ScoreKillip ClassificationLee's RCRILV Mass IndexLV Stroke Work IndexMAGGIC Risk ScoreMAP CalculatorMartin/Hopkins LDLModified Duke CriteriaModified Sgarbossa CriteriaMVA (Pressure Half-Time)Non-HDL CholesterolNT-proBNP Age-Adjusted ThresholdsORBIT ScoreOttawa Heart Failure RiskPREVENT EquationsPulse PressurePVR CalculatorPVR IndexQRISK3QTc (Bazett)QTc (Fridericia)REVEAL 2.0 ScoreREVEAL Lite 2Reynolds Risk ScoreROSIRVSP CalculatorSchwartz Score (LQTS)SCORE2Seattle Heart Failure Model (SHFM)Sgarbossa CriteriaShock IndexSokolow-Lyon VoltageStroke Volume IndexSVR CalculatorSYNTAX ScoreSYNTAX Score IITAPSETeichholz FormulaTIMI (STEMI)TIMI (UA/NSTEMI)Troponin Delta CalculatorValvular GradientsVancouver Chest Pain RuleVereckei AlgorithmWATCHDM ScoreWilkins ScoreWood Units Calculator
OpiCalc Logo

OpiCalc

Easy, fast, and private medical tools for clinicians. Always free.

No Login Required
Ready for the Bedside

Resources

About UsEditorial PolicyMedical DisclaimerPrivacy PolicyTerms of UseCookie Policy

Support

Contact Us

Clinical Notice:OpiCalc is not a substitute for professional clinical judgment. Always verify dosages and guidelines.

OpiCalc © 2026

•

All Rights Reserved

Duke Treadmill Score

Duke Treadmill Score: Provides prognostic information for patients with suspected CAD based on treadmill exercise results.
Guidelines & Evidence

Verified

Last Review: 2026-07-17

When to Use

When to Use

Prognostic stratification of patients with known or suspected coronary artery disease (CAD).
Evaluating survival and risk of future cardiac events post-exercise stress testing.

How it Works

Formula

Score = Exercise Time − (5 × ST deviation) − (4 × Angina Index) Exercise Time in minutes (Bruce protocol). ST deviation in millimeters. Angina Index: 0 = none, 1 = non-limiting, 2 = exercise-limiting.

Interpretation (5-Year Survival)

Low Risk (≥ 5)99% survival
Moderate Risk (−10 to +4)95% survival
High Risk (< −10)72% survival

Clinical Pearls

The Power of Exercise

The Duke Treadmill Score combines the major ischemia markers (ST change and angina) with the single most powerful prognostic marker in cardiology: exercise capacity.

Next Steps

Complementary Calculators

ASCVD Risk Estimator
GRACE ACS Risk Score
SYNTAX Score
FFR Calculator
Cardiac Output Index

The Evidence

Derivation Study

Prognostic value of a treadmill exercise score in outpatients with suspected coronary artery disease.

Mark DB et al. • N Engl J Med.. 1991;325(12):849–53. Derived from 2,749 patients at Duke University.

Last Comprehensive Review: 2026-07-17

In Recent Clinical News

Scanning Medical Journals

No new significant updates or guidelines matching this topic were found today. We will check again soon.