Angiographic correlates of the treadmill scores in non-high-risk patients with unstable angina
José A Alvarez Tamargo1, Eugenio Simarro Martín-Ambrosio, Enrique Romero Tarín
1Unidad de Cardiología, Hospital Carmen y Severo Ochoa, Cangas del Narcea, España. joseantonio.alvarezt@sespa.princast.es
Background:
There has been no clear consensus regarding the optimum definition of a high-risk exercise ECG test. The aim of this study is to compare the diagnostic accuracy of several treadmill scores [American College of Cardiology/American Heart Association (ACC/AHA) High-Risk Criteria for exercise testing, Duke Treadmill Score, Veterans Affairs and West Virginia Prognostic Score, ST/Heart Rate Index] with the ST-segment depression analysis in the detection of significant and severe coronary disease as determined by coronary angiography.
Methods:
The study included a cohort of 248 consecutive patients admitted to hospital for unstable angina.
Results:
The sensitivities of the ACC/AHA High-Risk Criteria and the ST depression > or =1 mm were 89.02 and 76.83%, respectively, for the detection of significant coronary artery disease, and 96.15 and 86.54% for the detection of severe coronary artery disease. The specificities of the Duke Treadmill Score and the ST depression > or=1 mm were 96.43 and 73.81%, respectively, for the detection of significant coronary artery disease, and 81.63 and 47.45% for the detection of severe coronary artery disease.
Conclusions:
The ACC/AHA High-Risk Criteria and Duke Treadmill Score provided relevant diagnostic information not available from the ST segment analysis alone.
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Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
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An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
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