Thallium 201 Myocardial Perfusion Scintigraphy for the Evaluation of Post Coronary Bypass Patients

摘要: To determine the utility of thallium-201 stress scintigraphy for assessment coronary bypass surgery, we evaluated chest pain, electrocardiograms, and scintigrams in 27 patients following surgery. These findings were compared with those angiography where >7 5% stenosis a graft, its distal vessel, or an ungrafted native represented significant postoperative lesions. Chest pain lacked sensitivity (60%) was nonspecific (20%) identification Stress electrocardiography had low good specificity (86%) diagnosis However, not helpful six who equivocal suboptimal tests. The scintigram (77%) highly specific stenosis. significantly more than (P <0.01), gave excellent localizing information, added to accuracy both conclusive inconclusive In nine whom preoperative also been obtained, comparison pre- studies reflected effects surgery on perfusion. Scintigraphy is useful technique noninvasive evaluation postcoronary patient alone great value documenting surgical results.