Should antiplatelet therapy be interrupted in drug eluting stent recipients throughout the periendoscopic period? A very late stent thrombosis case report and review of the literature

In-stent thrombosis after cessation of antiplatelet medications in patients with drug-eluting stents(DES) is a significant problem in medical practice,particularly in the perioperative period.We report a case of an 87-year-old man with a medical history of hypertension,coronary artery disease and chronic atrophic gastritis.Very late thrombosis of a sirolimus-eluting stent occurred 1207 days after implantation,seven months after discontinuation of clopidogrel,and the interruption of aspirin 13 days in preparation of an elective endoscopic gastrointestinal procedure presented with acute myocardial infarction.The patient was treated with thrombectomy and successfully revascularized with superimposition of two sirolimus-eluting stents.Medications administered in the catheterization laboratory included low molecular weight heparin and nitroglycerin.Flow was defined as grade 2 according to the thrombolysis in myocardial infarction scale.Electrocardiogram after the procedure revealed persistent,but decreased,ST-segment elevation in the anterolateral leads.The patient recovered and was discharged on aspirin and clopidogrel indefinitely.There was no cardiac event during the two year follow-up period.This case underlines the importance of maintaining the balance of thrombosis and bleeding during perioperation of non-cardiac procedure and the possible need for continuation of aspirin therapy during periendoscopic procedures among patients with low bleeding risks who received DES.