Why the study?
Does intravenous dipyridamole induce perfusion defects compared to exercise stress testing in a patient with myocardial bridging?
Does intravenous dipyridamole induce perfusion defects compared to exercise stress testing in a patient with myocardial bridging?
Intravenous dipyridamole may induce perfusion defects in patients with myocardial bridging, suggesting coronary vasodilators should be avoided for stress testing in this population.
Dipyridamole may induce perfusion defects in myocardial bridging; hypothesis-generating and should not yet change practice.
A patient with myocardial bridging and a thallium-201 scintigraphy perfusion defect after the administration of intravenous dipyridamole is presented. The same patient had a normal perfusion study on exercise stress testing. The effects of coronary vasodilators and dipyridamole on coronary artery flow patterns in patients with myocardial bridging are discussed. We suggest that coronary vasodilators may induce perfusion defects in patients with myocardial bridging and should be avoided in such patients.
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Bennett et al. (1988) studied this question.
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