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Relation of the Contractile Reserve of Hibernating Myocardium to Myocardial Structure in Humans
Background-Although dobutamine echocardiography (DE) is widely used to assess myocardial viability in humans, little is known about the relation between contractile reserve and myocardial structure. Methods and Results-We evaluated 20 patients with coronary disease (64Ϯ13 years old, ejection fraction 28Ϯ7.5%) with DE (up to 40 g ⅐ kg Ϫ1 ⅐ min Ϫ1 ), rest-redistribution 201 Tl single photon emission CT, and quantitative angiography before bypass surgery. During surgery, patients underwentdoi:10.1161/01.cir.100.5.490 pmid:10430762 fatcat:jlxqcmsknzfy5gmblqi2dpqawm