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  • Title: Clinical outcomes in real-world patients with acute myocardial infarction receiving XIENCE V® everolimus-eluting stents: one-year results from the XIENCE V USA study.
    Author: Sudhir K, Hermiller JB, Naidu SS, Henry TD, Mao VW, Zhao W, Ferguson JM, Wang J, Jonnavithula L, Simonton CA, Rutledge DR, Krucoff MW, XIENCE V USA Investigators.
    Journal: Catheter Cardiovasc Interv; 2013 Oct 01; 82(4):E385-94. PubMed ID: 23172848.
    Abstract:
    OBJECTIVES: The objective of this analysis was to evaluate the safety and effectiveness of XIENCE V in acute myocardial infarction (AMI). BACKGROUND: The XIENCE V(®) Everolimus-eluting coronary stent was superior to the TAXUS(®) paclitaxel-eluting stent in angiographic and clinical outcomes in the SPIRIT II, III, and IV randomized controlled trials, but patients with AMI were excluded. METHODS: XIENCE V USA is a large, prospective, multicenter, real-world single-arm postmarket surveillance trial. Consecutive patients undergoing PCI with XIENCE V were enrolled. For this analysis, clinical outcomes in 673 patients presenting with AMI (STEMI, n = 125) were as compared to patients without AMI (n = 3528) at 1 year. RESULTS: At 1 year, ARC-defined stent thrombosis (ST) rates were 1.08% in AMI vs. 0.85% in the non-AMI group (P = 0.4987). The late ST (30 days-1 year) rates were 0.31% vs. 0.47% (AMI vs. non-AMI, P = 0.7551). Rates of target lesion revascularization (TLR) were 4.1% vs. 4.6% (P = 0.6104), and rates of target lesion failure (TLF) were 9.1% vs. 8.5%, (P = 0.5964). With the historical WHO definition of MI, 1 year TLF rates were 7.0% vs. 6.7% (P = 0.8001). Improvements in quality of life, angina frequency, angina stability, and physical limitations occurred at 6 months (each P < 0.0001) and were sustained at 1 year in both groups. There were no significant differences in clinical outcomes between STEMI and non-STEMI patients. CONCLUSIONS: At 1 year, AMI patients treated with XIENCE V had low rates of ST, TLR, and TLF, similar to non-AMI patients. Marked improvements in patients' health status in this subgroup were also demonstrated.
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