 
Duke Treadmill Score
|
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. | | |
| | | |
|
 | |
This calculator has been viewed 207309 times.
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.
|
