EchocardiographyExercise StressMiscExercise Stress
Duke Treadmill ScoreMaximum Predicted Heart Rate (DOB)Mets & VO2 (Treadmill)
Maximum Predicted Heart Rate (Age)Max. Predicted Heart Rate AchievedRate Pressure Product
Prev

Duke Treadmill Score

Calculation


Ex Time
: Max ST
Min Sec mm
Angina Index
0. No angina during exercise
1. Non-limiting angina
2. Exercise limited angina


DTS
Risk
Risk Category
Men Women
1-Yr Mortality
No Stenosis >=75%
1 VD >=75%
2 VD >=75%
3VD >=75% or LM >=75%
Calculate

Clear
Top

Information

The Duke Treadmill Score (DTS) is a weighted index combining treadmill exercise time using standard Bruce protocol, maximum net ST segment deviation (depression or elevation), and exercise-induced angina. It was developed to provide accurate diagnostic and prognostic information for the evaluation of patients with suspected coronary heart disease. The typical observed range of DTS is from -25 (highest risk) to +15 (lowest risk). A low DTS is actually better at excluding ischemic heart disease in women than men.

DTS = Exercise Time - (5 x Max ST) - (4 x Angina Index)

Ex Time Treadmill exercise time
Max ST Maximum net ST deviation (except aVR)
Angina Index Treadmill angina index
0. No angina during exercise
1.

Non-limiting angina

2. Exercise limited angina

DTS Duke treadmill score
Risk
>=+5 Low risk
+4 to -10

Moderate risk

<= -11 High risk

DTS Risk Category

1-Yr Mortality

No Stenosis >=75%

1 VD >=75%

2 VD >=75%

3VD >=75% or LM >=75%

Men

Low  

0.9%

52.6%

22.4%

13.6%

11.4%

Mod  

2.9%

17.8%

15.6%

27.9%

38.7%

High

8.3%

1.8%

9.1%

17.5%

71.5%

Women

Low  

0.5%

80.9%

9.4%

6.2%

3.5%

Mod  

1.1%

65.1%

14.2%

8.3%

12.4%

High

1.8%

10.8%

18.9%

24.3%

46%

VD = Vessel Disease;  LM = Left Main
References

Mark DB, Hlatky MA, Harrell FE, Lee KL, Califf RM, Pryor DB. Exercise treadmill score for predicting prognosis in coronary artery disease. Ann Int Med 1987; 106:793-800.
Mark DB, Shaw L, Harrell FE Jr., et al. Prognostic value of a treadmill exercise score in outpatients with suspected coronary artery disease. N Engl J Med 1991; 325:849-53.
Alexander KP, Shaw L, Delong ER, Mark DB, Peterson ED. Value of exercise treadmill testing in women. J Am Coll Cardiol 1998; 32:1657-64.
Information

This calculator has been viewed 116475 times.

Powered by USquareSoft

Author: Dr. Chi-Ming Chow Developer: Edward Brawer Illustrator: Ellen Ho
Copyright © 2005-2011 CardioMath, All Rights Reserved.


Disclaimer: The calculators provided are not meant to be a substitute for professional advise and are not to be used for medical diagnosis. All calculations must be confirmed before clinical use or diagnostic purposes by qualified medical professionals. The authors make no claims of the accuracy of the information contained herein. The authors make no claims whatsoever, expressed or implied, about the authenticity, accuracy, reliability, completeness or timeliness of the material, software, text, graphics and links given. In no event shall the authors, its suppliers, affiliates or any third parties be liable in any manner whatsoever for any damage arising upon use of any information provided.