The success of a PCI is best defined by three related components: post-procedure angiographic outcomes, procedural events, and longer-term clinical outcomes. Stenting of long and complex lesions is associated with higher risk of stent thrombosis and restenosis even at long term follow-up. Tapered lesions (i.e., a significant mismatch between proximal and distal reference lumen diameters (RLD)) of the target coronary artery lesion may pose particular challenges during PCI and impact outcomes.
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