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  • Title: Five-year follow-up of polymer-free sirolimus- and probucol-eluting stents versus new generation zotarolimus-eluting stents in patients presenting with st-elevation myocardial infarction.
    Author: Colleran R, Kufner S, Harada Y, Giacoppo D, Cassese S, Repp J, Wiebe J, Lohaus R, Lahmann A, Schneider S, Ibrahim T, Laugwitz KL, Kastrati A, Byrne RA, Intracoronary Stenting and Angiographic Results: Test Efficacy of Sirolimus- and Probucol-Eluting Versus Zotarolimus-Eluting Stents (ISAR-TEST 5) Investigators.
    Journal: Catheter Cardiovasc Interv; 2017 Feb 15; 89(3):367-374. PubMed ID: 27377301.
    Abstract:
    BACKGROUND: Patients with ST-segment elevation myocardial infarction (STEMI) undergoing drug-eluting stent (DES) implantation are at increased risk of late adverse events, partly explained by an exaggerated inflammatory reaction to durable-polymer stent coatings. OBJECTIVES: We sought to investigate whether implantation of polymer-free DES would reduce this risk. METHODS: In the ISAR-TEST 5 (the Intracoronary Stenting and Angiographic Results: Test Efficacy of Sirolimus- and Probucol- and Zotarolimus-Eluting Stents) trial, patients were randomly allocated to receive a polymer-free sirolimus- and probucol-eluting stent or a new generation durable-polymer zotarolimus-eluting stent. We analyzed late clinical outcomes in the subgroup of patients presenting with STEMI. The primary endpoint was the combined incidence of cardiac death, target vessel-related myocardial infarction or target lesion revascularization at 5 years. RESULTS: 311 patients with STEMI were randomized to receive sirolimus- and probucol-eluting stents (n = 215) or zotarolimus-eluting stents (n = 96). At 5 years, there was no difference in the incidence of the primary endpoint in patients treated with sirolimus- and probucol-eluting stents versus zotarolimus-eluting stents (18.3% versus 20.1% respectively, hazard ratio = 0.87, 95% CI, 0.50-1.51; P = 0.62). Rates of the individual components of the primary endpoint were also comparable in both groups. The incidence of definite/probable stent thrombosis was 1.4% versus 1.0% respectively (hazard ratio = 1.35, 95% CI, 0.14-12.94, P = 0.80). CONCLUSIONS: Long-term outcomes of patients with STEMI treated with polymer-free sirolimus- and probucol-eluting stents versus durable-polymer zotarolimus-eluting stents were similar. Stent thrombosis rates were low and comparable in both treatment groups, with no events beyond 12 months. CLINICAL TRIAL REGISTRATION: Registered at ClinicalTrials.gov (Identifier NCT 00598533) © 2016 Wiley Periodicals, Inc.
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