1. Association of Morphologic Characteristics on Optical Coherence Tomography and Angiographic Progression Patterns of Late Restenosis After Drug-Eluting Stent Implantation

    Association of Morphologic Characteristics on Optical Coherence Tomography and Angiographic Progression Patterns of Late Restenosis After Drug-Eluting Stent Implantation

    Objectives To gain insight into the pathophysiology of late drug-eluting stent (DES) restenosis. Background Restenosis of DES has a different time course from that of bare metal stents. Methods Patients who underwent follow-up coronary angiography (CAG) twice (six to nine months and 18 to 24 months) after DES implantation were examined using optical coherence tomography (OCT). All lesions with target lesion revascularization at first follow-up were excluded. Late catch-up was defined as lesions that progressed from less than 50% diameter stenosis (DS) at the first CAG to more than 50% DS at the second CAG. Lesions with the late catch-up ...

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