Factors Influencing the Diagnostic Sensitivity of the Exercise Test in Coronary Artery Disease

Ikram, Hamid; Chan, W. C.; Bones, P. J.; Sherry, E.
April 1980
Angiology;Apr1980, Vol. 31 Issue 4, p246
Academic Journal
A continuous multistage bicycle ergometer test was performed on 50 patients with coronary artery disease. Selective cinecoronary angiography and left ventriculography were performed within a week of the test in all patients. Over- all, 62% had a positive ischemic response. defined as 1 mm or greater depression of the ST segment. Patients with 75% or greater stenosis in any vessel and those with triple-vessel involvement had a higher incidence of positive tests. Those with low systolic ejection fractions and areas of asynergy had fewer positive tests than patients with normal ejection fractions and normal or minimal segmental wall motion abnormalities. The level of exercise, location of arterial disease and the presence of collateral blood supply to the diseased vessels did not appear to influence the sensitivity of the exercise stress test.


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