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Published on: October 26, 2016
Popliteal artery stenting using flexible tantalum stents
E P Strecker1, I B Boos, D Göttmann
1Clinic of Imaging, Radiology, Nuclear Medicine, and Interventional Radiology, Diakonissenkrankenhaus, Diakonissenstrasse 28, D-76199 Karlsruhe, Germany. radiologie@diak-ka.de
Purpose:
To evaluate the safety and efficacy of stent therapy for the treatment of residual stenoses after percutaneous transluminal angioplasty (PTA) of popliteal stenoses and occlusions.
Methods:
In a prospective single-center study, flexible tantalum stents were implanted in 32 popliteal arteries for the treatment of residual stenosis greater than 50% after PTA of stenoses (n = 17) or occlusions (n = 15) in the P1 (n = 16), the P2 (n = 13), or both P1 and P2 segment (n = 3). Follow-up patency was assessed by clinical examination, ankle-brachial index, and color Doppler sonography or angiography.
Results:
Early stent thrombosis (10 days): 1 of 32 arteries (3%). 1-year and 2-year primary patency rate (PPR): 81% +/- 7.1% and 74% +/- 9.1%, respectively. 1-year PPRs for subgroups: stented stenoses versus stented occlusions: 88% +/- 7.8% vs 73% +/- 12.0%, p = 0.12; good lower limb runoff versus poor: 84.0% +/- 8.7% vs 76.0% +/- 12.4; p = 0.09; P1 versus P2: 77.3% +/- 9.8% vs 85.7% +/- 9.4%, p = 0.38. Recurrent PTA lesions treated with stents showed higher restenosis rate than de novo lesions.
Conclusion:
The results of stent therapy of residual popliteal stenosis after PTA are encouraging and warrant further investigation.
