Key result
Following left anterior coronary occlusion, radial strain significantly decreased in the periinfarct (-17.7%) and remote (-15.2%) regions at 6 weeks compared to baseline.
Why the study?
Does left anterior coronary artery occlusion reduce radial strain in periinfarct and remote regions in a rat model?
Population
24 male Sprague-Dawley rats (270-370 g) divided into an acute group (n=10) and a chronic group (n=14).
Comparison
Left anterior coronary artery occlusion for… vs Baseline measurements prior to ischemia.
Design
Preclinical
Follow-up
Up to 6 weeks
Authors
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Regional strain reductions beyond infarct zones may signal broader remodeling risk; leaves open translation to human therapies.
Cohort (n=24)
No
Does left anterior coronary artery occlusion reduce radial strain in periinfarct and remote regions in a rat model?
Effect estimate: -17.7 ± 8.3%
p-value: p=<0.05
2D strain echocardiography demonstrates that myocardial dysfunction occurs early and persists chronically not only in the infarcted region but also in periinfarct and remote regions following anterior infarction, contributing to adverse remodeling.
Migrino et al. (2008) conducted a cohort in Myocardial infarction (n=24). Left anterior coronary artery occlusion vs. Baseline (pre-occlusion) was evaluated on Change in radial strain in the periinfarct region at 6 weeks (-17.7 ± 8.3%, p=<0.05). Following left anterior coronary occlusion, radial strain significantly decreased in the periinfarct (-17.7%) and remote (-15.2%) regions at 6 weeks compared to baseline.
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