1. Serial Optical Coherence Tomography-Based Observation of Strut Coverage on Drug-Eluting Stent Crossing Side-Branch Vessels

    Serial Optical Coherence Tomography-Based Observation of Strut Coverage on Drug-Eluting Stent Crossing Side-Branch Vessels

    Background. Serial changes in strut coverage of drug-eluting stents (DESs), which are placed across side-branch vessels, remain unclear. Methods. The changes in strut coverage of DESs crossing side-branch vessels (size ≥2.0 mm) were serially evaluated by optical coherence tomography (OCT) in 30 patients at 9 months and 2 years after the index DES implantation. DESs were paclitaxel-eluting stents (PESs), sirolimus-eluting stents (SESs), and zotarolimus-eluting stents (ZESs), each in 10 patients. Measured neointimal hyperplasia (NIH) thickness of 0 μm on OCT was defined as an uncovered strut. Results. The percentage of uncovered side-branch struts significantly decreased from 55.7 ± 39 ...

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