What question did this study set out to answer?

The study aims to evaluate the relationship between vascular injury and myocardial hemorrhage and their effects on necrosis following reperfusion.

December 1, 1980CirculationOpen Access

The relationship of vascular injury and myocardial hemorrhage to necrosis after reperfusion.

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Randomized trial reveals the role of hemorrhage and vascular injury in myocardial necrosis after reperfusion.

The study aims to evaluate the relationship between vascular injury and myocardial hemorrhage and their effects on necrosis following reperfusion.
Six anesthetized dogs underwent balloon occlusion of the left anterior descending coronary artery for 5.5 hours, followed by 30 minutes of reflow.
Colloidal carbon was injected to label injured vessels prior to reperfusion.
Myocardial necrosis, hemorrhage, and vascular injury were quantified post-surgery using planimetry of stained heart tissue.
Hemorrhage was found to be less extensive than necrosis (10.2 +/- 4.6% vs 19.8 +/- 8.6%, p < 0.01).
Hemorrhage occurred only in areas of necrosis with severe pre-existing vascular injury.
Positional analysis showed hemorrhage primarily in the subendocardial region of necrotic tissue.

Fishbein et al. (1980) studied this question.

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