Relation between the percentage of the LV that was dysfunctional but viable in 41 patients before revascularization and the changes in the mean wall motion score and ejection fraction after revascularization. Decreases in wall motion scores indicate increases in contractility. The mean ejection fraction was 43±13 percent before revascularization and 47±12 percent after revascularization. One patient had significantly worse function after revascularization and required the insertion of an intraaortic balloon pump aft3r bypass surgery because of a perioperative myocardial infarction.

From Kim RJ, Wu E, Rafael A, Chen EL, Parker MA, Simonetti O et al. The use of contrast enhanced magnetic resonance imaging to identify reversible myocardial dysfunction. New England Journal of Medicine. 2000;343:1445-1453; Copyright 2003 Massachusettes Medical Society. All rights reserved.