1. Evaluation of neointimal coverage of overlapping sirolimus- eluting stents by optical coherence tomography

    Evaluation of neointimal coverage of overlapping sirolimus- eluting stents by optical coherence tomography

    Background Although overlapping sirolimus-eluting stents are often used in long lesions during percutaneous coronary intervention, it was not clear how intimal hyperplasia at the overlapping segments compares with that of single-layer sirolimus-eluting stents. Methods Optical coherence tomography (OCT) examinations were performed on 22 patients in whom overlapping sirolimus-eluting stents (SESs) were implanted. OCT images were analyzed off-line after the procedure. Still frames were selected and classified, and the length of overlap, lumen loss, and average neointimal thickness on the strut were measured. The stent strut was classified into well-apposed to vessel wall with apparent neointimal coverage (type A), well-apposed to ...

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