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  • Title: German multicenter real-world registry of stenting for superficial femoral artery disease: clinical results and predictive factors for revascularization.
    Author: Krankenberg H, Tübler T, Sixt S, Fischer M, Schmiedel R, Schulte KL, Balzer JO, Kieback A, Fiehn E, Wittenberg G, Ali T, Tiefenbacher C, Jahnke T, Steinkamp HJ, Wegscheider K, Treszl A, Ingwersen M, Zeller T.
    Journal: J Endovasc Ther; 2014 Aug; 21(4):463-71. PubMed ID: 25101571.
    Abstract:
    PURPOSE: To investigate nitinol stent treatment of superficial femoral artery (SFA) lesions and the impact of different risk factors on the need for clinically driven target lesion revascularization (TLR) in a large, real-world population of claudicants. METHODS: Patients presenting with symptomatic SFA stenosis >70% were consecutively enrolled in the 13-center MARIS prospective registry (ClinicalTrials.gov identifier NCT01067885). There was no restriction on lesion length, thus leading to the inclusion of a real-world as well as high-risk patient cohort. The 998 participating patients (657 men; mean age 67.4±9.2 years) had 1050 lesions treated with the same nitinol stent type. The mean lesion length was 9.5±9.6 cm (range 0.5-44; median 8.0); more than a third of the lesions (450, 42.9%) were total occlusions. The primary endpoint was the need for clinically driven target lesion revascularization (TLR) at 12 months. RESULTS: Acute technical success was achieved in 1042 (99.2%) lesions. Restenosis occurred in 187 (23.7%) and reocclusion in 79 (10.0%) lesions at 12 months. The primary endpoint of TLR at 12 months was reached by 136 (17.2%) patients. The periprocedural complication rate was 5.4%. Independent predictors of TLR were female gender [odds ratio (OR) 0.5, 95% confidence interval (CI) 0.3 to 0.7, p<0.001] and lesion length >20 cm vs. 10 cm (OR 2.7, 95% CI 1.1 to 6.6, p=0.029) and 10-20 cm vs. 10 cm (OR 1.9, 95% CI 1.0 to 4.1, p=0.047). CONCLUSION: Stent implantation in the SFA is safe and associated with favorable acute and midterm results in a real-world setting. Lesion length and female gender were identified as independent risk factors for TLR.
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