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  • Title: A randomized comparison of sirolimus-eluting stent with balloon angioplasty in patients with in-stent restenosis: results of the Restenosis Intrastent: Balloon Angioplasty Versus Elective Sirolimus-Eluting Stenting (RIBS-II) trial.
    Author: Alfonso F, Pérez-Vizcayno MJ, Hernandez R, Bethencourt A, Martí V, López-Mínguez JR, Angel J, Mantilla R, Morís C, Cequier A, Sabaté M, Escaned J, Moreno R, Bañuelos C, Suárez A, Macaya C, RIBS-II Investigators.
    Journal: J Am Coll Cardiol; 2006 Jun 06; 47(11):2152-60. PubMed ID: 16750678.
    Abstract:
    OBJECTIVES: We sought to assess the effectiveness of sirolimus-eluting stents (SES) in patients with in-stent restenosis (ISR). BACKGROUND: Treatment of patients with ISR remains a challenge. METHODS: The Restenosis Intrastent: Balloon Angioplasty Versus Elective Sirolimus-Eluting Stenting (RIBS-II) study is a multicenter randomized trial conducted in 150 patients with ISR (76 allocated to SES and 74 to balloon angioplasty [BA]). The primary end point was recurrent restenosis rate at nine months. Secondary end points included prespecified subgroup analysis, lumen volume on intravascular ultrasound (IVUS), and a composite of major clinical events at one year. RESULTS: Angiographic success was obtained in all patients. At 9-month angiographic follow-up (96% of eligible patients) minimal lumen diameter was larger (2.52 mm [interquartile range (IQR) 2.09 to 2.81] vs. 1.54 mm [IQR 0.91 to 2.05]; p < 0.001) and recurrent restenosis rate was lower (11% vs. 39%; p < 0.001) in the SES group. Prespecified subgroup analyses were consistent with the main outcome measure. Lumen volume on IVUS at 9 months was also larger (279 mm3 [IQR 227 to 300] vs. 197 mm3 [IQR 177 to 230]; p < 0.001) in the SES group. At one-year clinical follow-up (100% of patients), the event-free survival (freedom from death, myocardial infarction, and target vessel revascularization) was significantly improved in the SES group (88% vs. 69%; p < 0.004) as the result of a lower requirement for target vessel revascularization (11% vs. 30%; p < 0.003). CONCLUSIONS: In patients with ISR, the use of SES provides superior long-term clinical, angiographic, and IVUS outcome than BA treatment.
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