The pathobiology of the arterial response to injury in the form of PCI with stent deployment has been extensively examined. Stenting leads to an acute inflammatory response, followed by chronic inflammation. Within minutes after stent deployment, an intense reaction to injury consists of platelet activation and accumulation, expression of adhesion molecules, leukocyte recruitment, and thrombus formation. The degree of injury likely determines the resultant inflammatory response and eventual restenosis (Figs. 1-4 and 1-5). In autopsy studies, pathologic data suggest that stent deployment leading to
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