After permanent @entity1563 , the extent of two-dimensional echocardiographically detected dyskinesis correlates well with @entity1188 size. Reperfusion after @entity1563 decreases @entity1188 size; however, contractile function of myocardium salvaged in this way may remain @entity308 for several weeks. The purpose of this study was to explore the relationship between echocardiographically detected dyskinesis and @entity1188 size in reperfused myocardium. We hypothesized that after transient @entity1563 , the relationship between dyskinesis and @entity1188 size would be altered because of the prolonged @entity308 of contractile function after reperfusion so that dyskinesis would not predict @entity1188 size. We also wanted to explore two related questions: (1) Does inotropic stimulation of reperfused myocardium result in improved systolic function in segments that are dysfunctional but not necrotic? (2) Does the relationship between @entity1188 size and coronary risk region, which is linear in myocardium subjected to permanent @entity1563 , remain linear in myocardium subjected to a sequence of occlusion and reperfusion? Thirty-seven sedated @entity235 with preplaced circumflex occluders underwent 1 or 2 hr of @entity1563 , then 2 or 10 days of reperfusion. The percentage of the left ventricle that was @entity910 was estimated from short-axis two-dimensional echocardiograms at the chordal and papillary muscle level obtained at control, after 1 or 2 hr of occlusion, after 20 min of reperfusion, and after 2 or 10 days of reperfusion. At 2 or 10 days of reperfusion, echocardiograms were also obtained during infusion of @entity452 . Area at risk was determined from postmortem barium-gelatin angiography and @entity1188 size was determined at pathologic examination. We found a significant linear correlation between @entity1188 size and risk region size in reperfused myocardium.(ABSTRACT TRUNCATED AT 250 WORDS)

Echocardiographically detected dyskinesis, myocardial infarct size, and coronary risk region relationships in reperfused XXXX myocardium.

@entity308 :: ('MESH:D003866', 'Disease') :: ['depressed', 'depression'] @entity452 :: ('MESH:D004280', 'Chemical') :: ['dobutamine'] @entity235 :: ('9615', 'Species') :: ['dogs'] @entity1563 :: ('MESH:D054059', 'Disease') :: ['coronary artery occlusion', 'coronary occlusion'] @entity910 :: ('MESH:D004409', 'Disease') :: ['dyskinetic'] @entity1188 :: ('MESH:D007238', 'Disease') :: ['infarct']
@entity235 :: (9615,Species) :: ['canine']
