Abstract
We report the case of a 55-year-old man who underwent coronary angiography in 2004 for early angina following anterior ST-elevation myocardial infarction. Angiography disclosed a critical stenosis in the proximal left anterior descending artery and significant stenoses in the right coronary artery and first obtuse marginal branch, treated with two paclitaxel-eluting stents and a sirolimus-eluting stent, respectively. After completion of a six-month thienopyridine course and while still being on lifelong aspirin, in 2007 he was readmitted for lateral ST-elevation myocardial infarction: angiography revealed stent thrombosis beginning at the proximal edge of the sirolimus-eluting stent implanted in the first obtuse marginal branch. Intravascular ultrasound was performed after thrombectomy but before balloon dilation showing suboptimal stent expansion and a thrombus partially adhering to the sirolimus-eluting stent. The procedure was then successfully completed with the implantation of another sirolimus-eluting stent. This clinical vignette suggests that suboptimal drug-eluting stent deployment may be associated with stent thrombosis well after the traditional time frame of subacute thrombosis.
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