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Prognostic value of the Duke Treadmill Score in diabetic patients. 2005

Dhanunjaya R Lakkireddy, and Jyothi Bhakkad, and Hema L Korlakunta, and Kay Ryschon, and Xuedong Shen, and Aryan N Mooss, and Syed M Mohiuddin
Creighton University Cardiac Center, Omaha, Nebraska 68131, USA.

BACKGROUND The Duke Treadmill Score (DTS) is an established clinical tool for risk stratification of coronary artery disease. We sought to assess the prognostic value of the DTS in diabetics compared with nondiabetics in this study. METHODS We studied 100 diabetics and 202 age- and sex-matched nondiabetic controls without known coronary artery disease risk stratified by DTS and followed for a median duration of 6.6 years. The association between DTS and primary, secondary outcomes, composite events, and rate of coronary angiography was tested. RESULTS Survival free from cardiac death, nonfatal myocardial infarction, congestive heart failure, or early and late revascularization was 89%, 54%, and 13%, respectively, in the low-, intermediate-, and high-risk categories of diabetic group (P < .0001), and 91%, 57%, and 17%, respectively, in the low- to high-risk groups of nondiabetics (P < .0001). During follow-up, diabetics had more secondary events (P = .011) and coronary angiography (P < .001) compared with nondiabetics. The DTS was a strong independent predictor of composite events in both diabetics (P < .001) and nondiabetics (P < .001). A significant number of diabetics were classified as intermediate risk and had a significantly higher incidence of coronary angiography (87.5% vs 70.8%, P = .032) and late revascularizations (35.4% vs 15.3%, P = .011) within this risk group compared with nondiabetics. Survival free from major adverse cardiac events differed significantly across the 3 Duke risk groups for diabetics (P = .002) but not for controls (P = .07). Survival free from composite events differed significantly across the 3 Duke risk groups for both diabetics and nondiabetics (P < .0001). Overall, diabetics had higher rates of major adverse cardiac events, composite events (P = .011), and coronary angiography (P < .001) than nondiabetics. The DTS is a strong predictor of survival free of composite events in both groups by multivariate analysis. CONCLUSIONS The DTS predicted survival free from MACE and composite events equally well in patients with and without diabetes.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011237 Predictive Value of Tests In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test. Negative Predictive Value,Positive Predictive Value,Predictive Value Of Test,Predictive Values Of Tests,Negative Predictive Values,Positive Predictive Values,Predictive Value, Negative,Predictive Value, Positive
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D002318 Cardiovascular Diseases Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM. Adverse Cardiac Event,Cardiac Events,Major Adverse Cardiac Events,Adverse Cardiac Events,Cardiac Event,Cardiac Event, Adverse,Cardiac Events, Adverse,Cardiovascular Disease,Disease, Cardiovascular,Event, Cardiac
D005080 Exercise Test Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used. Arm Ergometry Test,Bicycle Ergometry Test,Cardiopulmonary Exercise Testing,Exercise Testing,Step Test,Stress Test,Treadmill Test,Cardiopulmonary Exercise Test,EuroFit Tests,Eurofit Test Battery,European Fitness Testing Battery,Fitness Testing,Physical Fitness Testing,Arm Ergometry Tests,Bicycle Ergometry Tests,Cardiopulmonary Exercise Tests,Ergometry Test, Arm,Ergometry Test, Bicycle,Ergometry Tests, Arm,Ergometry Tests, Bicycle,EuroFit Test,Eurofit Test Batteries,Exercise Test, Cardiopulmonary,Exercise Testing, Cardiopulmonary,Exercise Tests,Exercise Tests, Cardiopulmonary,Fitness Testing, Physical,Fitness Testings,Step Tests,Stress Tests,Test Battery, Eurofit,Test, Arm Ergometry,Test, Bicycle Ergometry,Test, Cardiopulmonary Exercise,Test, EuroFit,Test, Exercise,Test, Step,Test, Stress,Test, Treadmill,Testing, Cardiopulmonary Exercise,Testing, Exercise,Testing, Fitness,Testing, Physical Fitness,Tests, Arm Ergometry,Tests, Bicycle Ergometry,Tests, Cardiopulmonary Exercise,Tests, EuroFit,Tests, Exercise,Tests, Step,Tests, Stress,Tests, Treadmill,Treadmill Tests
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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