Plasma lipoprotein(a) and severity of angiographic coronary artery disease.

department with symptoms of chest pain cannot perform adequate treadmill exercise. In these patients we perform vasodilator myocardial perfusion imaging. Our study examined the usefulness of resting myocardial perfusion imaging alone for triaging patients with chest pain and nondiagnostic electrocardiograms. We believe that optimal protocols for evaluating patients with chest pain in emergency department chest pain units should incorporate combined discriminative use of biomarkers of cardiac injury, radionuclide myocardial perfusion imaging, and stress testing. There is a need for the development guidelines for optimal use of various diagnostic resources for effective management of low risk patients with chest pain syndromes (9).