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What is Which score is calculated during performance of this test? and explain in detail?
The image shows a Treadmill test being performed on the patient. Duke treadmill score is used to decide fuher workup and management of patients of chronic stable angina. Duke treadmill score : Maximum exercise time in minutes - 5xST segment detion in mm - 4xangina index Angina index 0 = no angina 1 = non-limiting angina 2 = exercise limiting angina A score >5 indicates low risk for cardiovascular events (predicted 4 year survival is 99%). A score <-11 indicates high risk for cardiovascular events (predicted 4 year survival is 79%). These patients require fuher investigation with coronary angiography. A score between 4 and -10 indicates intermediate risk. Such patients may require fuher investigation with myocardial perfusion scanning or coronary angiography, or both, depending on the pre-test probability.