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  • Title: Clinical safety and efficacy of a novel thin-strut cobalt-chromium coronary stent system: results of the real world Coroflex Blue Registry.
    Author: Bocksch W, Pomar F, Dziarmaga M, Tresukosol D, Ismail O, Janek B, Carlsson J, Simon JP, Coroflex Blue Registry Investigators.
    Journal: Catheter Cardiovasc Interv; 2010 Jan 01; 75(1):78-85. PubMed ID: 19739262.
    Abstract:
    OBJECTIVES: The aim of this registry was to evaluate the clinical efficacy and safety of the Coroflex Blue cobalt-chromium stent in real-world practice. BACKGROUND: The development of cobalt-chromium bare-metal stents (BMS) with thinner struts has lead to better deliverability and lower target-lesion revascularization rates compared with stainless steel BMS. METHODS: The Coroflex Blue Registry was an international, prospective, multicenter registry enrolling patients with symptomatic ischemic heart disease attributable to single de novo or restenotic nonstented lesions of a single vessel amenable for percutaneous stenting. The primary end point was clinically driven target-lesion revascularisation (TLR) 6 months after enrolment, secondary endpoints were technical/procedural success, in-hospital outcome, definite stent thrombosis and major adverse cardiac events (death, myocardial infarction, or TLR) after 6 months. RESULTS: The registry included 2,315 patients (mean age 64.3 +/- 11.1 years, 19.8% diabetes, 37.3% acute myocardial infarction). Although a complex lesion cohort with 60.3% Typ B(2)/C-lesions, the technical success rate was 99.1% and the procedural success rate 98.5%. The incidence of TLR after 6 months was 5.5% and the cumulative 6-month acute/subacute stent thrombosis rate was 1.6%. After 6 months cumulative event-free survival was 90.8% in all patients and 87% in patients with acute PCI for acute myocardial infarction. CONCLUSIONS: This registry demonstrates the safety and efficacy of the Coroflex Blue cobalt-chromium stent platform in real-world practice. In the era of drug-eluting stents (DES), these results raise the serious question if the use of DES for primary prevention of restenosis and TLR is really justified.
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