title: Thallium-201 scintigraphy perfusion defect with dipyridamole in a patient with a myocardial bridge.
abstract: 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.
authors: Department of Medicine, University of Pretoria, Republic of South Africa.
authors: J M
authors: JM
authors: Bennett
authors: P
authors: P
authors: Blomerus
mesh_terms: D000328:Adult; D003327:Coronary Disease / Q000175:diagnosis*; D004176:Dipyridamole; D004452:Echocardiography; D004562:Electrocardiography; D005080:Exercise Test; D005189:False Positive Reactions; D006801:Humans; D008297:Male; D008945:Mitral Valve Prolapse / Q000000981:diagnostic imaging / Q000503:physiopathology*; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
chemical_list: D013794:Thallium Radioisotopes; D004176:Dipyridamole