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  • Title: Primary use of sirolimus-eluting stents in the infrapopliteal arteries.
    Author: Rastan A, Schwarzwälder U, Noory E, Taieb FH, Beschorner U, Sixt S, Bürgelin K, Amantea P, Neumann FJ, Zeller T.
    Journal: J Endovasc Ther; 2010 Aug; 17(4):480-7. PubMed ID: 20681763.
    Abstract:
    PURPOSE: To report 12-month outcomes following application of sirolimus-eluting stents (SES) in infrapopliteal arteries in patients with chronic limb ischemia. METHODS: A prospective single-center study was conducted involving 146 consecutive patients (102 men; mean age 73+/-9 years) with Rutherford-Becker categories 2 to 5 lower limb ischemia who underwent SES placement. The average degree of stenosis at baseline was 86%+/-5%; there were 44 (30%) occlusions. The main study endpoint was the 1-year primary patency rate, defined as freedom from in-stent restenosis (luminal narrowing > or =70%) detected with angiography or, if appropriate, with duplex ultrasound. Secondary endpoints included the 6-month primary patency rate, secondary patency rate, ankle-brachial index (ABI), and changes in the Rutherford-Becker classification. RESULTS: Fifteen (10%) patients were lost to follow-up, and 27 (18%) patients died during the follow-up period, leaving 104 patients undergoing the 6- and 12-month follow-up examinations. After 6 months and 1 year, the primary patency rates were 88.5% and 83.7%, respectively. The mean ABI increased from 0.6+/-0.4 at baseline to 0.8+/-0.2 after 6 months and remained significantly improved during 1-year follow-up (p<0.0001). The mean Rutherford-Becker classification decreased from 3.3+/-0.8 at baseline to 0.9+/-1.1 (p<0.0001) after 1 year. CONCLUSION: Treatment of infrapopliteal arteries with SES yields encouraging long-term results that compare favorably with previously published data on bare metal stents or plain balloon angioplasty.
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