Does the Area at Risk of Infarction Change Over Time?
The size of the hypoperfused zone (area at risk) produced by occluding any given coronary artery shows considerable variation among untreated animals (1). Since the amount of myocardium that will infarct is, to a large extent, dependant upon the size of the area at risk (AAR) (1–3), infarct sizes also show considerable variation. Therefore, it has become conventional to express infarct size as a percentage of the AAR in order to standardize this variable.
KeywordsInfarct Size Pulmonary Vein Collateral Flow Border Zone Risk Zone
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