Optical Coherence Tomography Findings in Lesions After Sirolimus-Eluting Stent Implantation With Peri-Stent Contrast Staining

Abstract

We have sometimes noted abnormal angiographic coronary dilatation, 20% of the stent diameter measured by quantitative coronary angiography. MIH is defined as multiple hollows (the maximum depth >0.5 mm) existing between and outside well-apposed stent struts. Both incomplete stent apposition (60.0% versus 10%; P P P =0.001), malapposed struts (2.0% versus 0.0%; P P =0.012) were frequently observed in lesions with PSS than in lesions without PSS. PSS might be closely associated with 2 different optical coherence tomography findings, MIH and incomplete stent apposition, in lesions after sirolimus-eluting stent implantation.