Provocation of coronary spasm by dobutamine stress echocardiography in a patient with angiographically minimal coronary artery disease
1996; Wiley; Volume: 19; Issue: 9 Linguagem: Inglês
10.1002/clc.4960190916
ISSN1932-8737
AutoresUbeydullah Deligönül, Robert Armbruster, Admassu Hajlu,
Tópico(s)Cardiomyopathy and Myosin Studies
ResumoAbstract Dobutamine stress echocardiography (DSE) has been widely used for the noninvasive diagnosis of obstructive coronary artery disease. The ST‐segment elevation during DSE has been reported as an infrequent event, caused by old myocardial infarction and/or critical coronary narrowings. The patient presented here was a 35‐year‐old man with a recent history of nonexertional chest pain. He had hyperc‐holesterolemia and a history of heavy smoking as risk factors. The patient developed ST‐segment elevation with chest pain during 40 mcg/min dobutamine infusion for the stress echocardiographic examination. Subsequent coronary angiograms revealed only mild coronary atherosclerosis. It is speculated that coronary spasm occurred in this patient as a paradoxical response to increased coronary blood flow with dobutamine administration.
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