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  • Title: One-year clinical outcomes of patients treated with polymer-free amphilimus-eluting stents or zotarolimus-eluting stents: A propensity-score adjusted analysis.
    Author: Rozemeijer R, van Muiden IG, Koudstaal S, Leenders GE, Timmers L, Rittersma SZ, Kraaijeveld AO, Doevendans PA, Voskuil M, Stella PR.
    Journal: Catheter Cardiovasc Interv; 2019 Jul 01; 94(1):61-69. PubMed ID: 30604493.
    Abstract:
    BACKGROUND: Polymer-free amphilimus-eluting stents (PF-AES) represent a novel elution-technology in coronary stenting. We aimed to assess 1-year clinical outcomes of PF-AES as compared to latest-generation permanent polymer zotarolimus-eluting stents (PP-ZES) in a real-world all-comers setting. METHODS: A prospective registry of patients treated with either PF-AES or PP-ZES between 2014 and 2016 was conducted. The primary outcome was defined as major adverse cardiac and cerebrovascular events (MACCE), and the secondary outcome was defined as target-lesion failure (TLF) at 1 year. To account for measured confounders, a propensity-score adjusted Cox proportional-hazard model was built to evaluate clinical outcomes. RESULTS: A total of 734 consecutive patients with 1,269 DES implantations were enrolled. The population was characterized by 28% diabetes, 24% ST-segment elevation myocardial infarction, and a high number of complex lesions (69%). The rate of MACCE was 11.5% for PF-AES and 13.6% for PP-ZES, plog-rank  = 0.11. TLF was numerically lower in PF-AES as compared to PP-ZES (5.4 vs. 6.1%, plog-rank  = 0.68). After propensity-score adjustment, PF-AES showed a trend toward a lower rate of MACCE and a favorable rate of TLF as compared to PP-ZES (HR 0.70; 95%CI 0.45 to 1.10, P = 0.12; and HR 0.88; 95%CI 0.47 to 1.65, P = 0.68, respectively). Rates of definite ST were low (0.8 vs. 0.3%, plog-rank  = 0.62). CONCLUSIONS: Our study suggests that implantation of PF-AES was safe and effective in real-world patients, with low-rates of MACCE and TLF at 1 year. Our data needs to be confirmed by a large trial to evaluate the clinical outcomes of this novel polymer-free, eluting-technology used in PF-AES.
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