Myocardial perfusion imaging during pharmacologic stress testing.
Pharmacologic stress testing has gained wide acceptance as an alternative to exercise stress testing when combined with myocardial perfusion scintigraphy and has expanded the applicability of cardiac imaging to the large number of patients who wither cannot exercise or are limited to a submaximal effort. The pharmacologic stressors presently available are either coronary vasodilators (e.g., adenosine, dipyridamole) or beta-agonists (e.g., dobutamine). This article summarizes the physiologic principles underlying pharmacologic stress imaging and its clinical utility in evaluating patients with suspected coronary artery disease.
Department of Internal Medicine, Baylor College of Medicine, Houston, Texas.
J J
JJ
Mahmarian
M S
MS
Verani
D000241:Adenosine; D000818:Animals; D000075202:Contraindications; D003326:Coronary Circulation; D003327:Coronary Disease / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004176:Dipyridamole; D004280:Dobutamine; D005080:Exercise Test; D006321:Heart / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D015609:Organotechnetium Compounds; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes; D014664:Vasodilation / Q000187:drug effects*
D015609:Organotechnetium Compounds; D013794:Thallium Radioisotopes; D004280:Dobutamine; D004176:Dipyridamole; D000241:Adenosine