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Duke Treadmill Score: Prediction Of Coronary Heart Disease In A
Patient With Chest Pain Undergoing A Treadmill Stress Test
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NOTE: This score is not applicable if patient is known to
have CHD.
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Exercise Test
variables
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Exercise Time - In Minutes - Standard
Bruce Protocol
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min
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Maximum ST deviation - In mm - At 80
msec after the J-Point
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mm
(always a positive figure, no matter if positive or negative deviation)
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Angina Score During Exercise
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Duke Treadmill Score
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Probability of Significant CHD
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probability of >75%
stenosis in at least 1 coronary artery
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Probability of Severe CHD
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probability of 3 vessel
CHD or >75% LMS
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5-Year Mortality
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Overall risk subcategory
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References:
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(1) Mark DB et al NEJM
1991;325:849-53 and Ann Intern Med 1987;106:793-800
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Study dataset n=2842
(ExECG within 6 weeks of Cor Angio)
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70% Male, median age
49yr (10-90% centiles 37-60)
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Training sample
n=1422, Validation sample n=1420
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(2) Shaw LJ et al
Circulation 1998;98:1622-30
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Study dataset n=2758
(ExECG within 6 weeks of Cor Angio)
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70% Male, median age 49yr, 30% prior MI,
47% typical angina, 61% had significant CHD at Angio
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Training sample
n=2758, Validation sample n=467
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ROC for predicting
significant CHD = 0.76 for DTS, 0.91 for post-test DTS + Clinical score
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Designed by Dr John Bayliss (1999-2002) v11
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West Hertfordshire Cardiology, Hemel Hempstead Hospital,
Herts HP2 4AD
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