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  • Title: Endovascular treatment of atherosclerotic popliteal artery disease based on dynamic angiography findings.
    Author: Cui C, Huang X, Liu X, Li W, Lu X, Lu M, Jiang M, Yin M.
    Journal: J Vasc Surg; 2017 Jan; 65(1):82-90. PubMed ID: 27498056.
    Abstract:
    OBJECTIVE: To evaluate efficacy, safety, and midterm patency of endovascular treatment of obstructive popliteal artery (PA) disease. METHODS: A retrospective evaluation of patients with atherosclerotic PA disease who underwent percutaneous transluminal balloon angioplasty and provisional stent, based on both conventional and dynamic angiographies, was conducted from June 2011 to June 2014. Forty-three patients were included in the study, and most patients had limited surgical revascularization options. Demographic characteristics, angiographic findings, interventional data, complications, vessel patency, limb salvage rates, and survival rates were analyzed. RESULTS: The median lesion length was 5 cm with 72.1% having total occlusions. The second popliteal segment (P2) was involved most frequently (60.5%, n = 26). Critical limb ischemia was present in 69.8%. The technical success rate was 92.9% (42/43 limbs), with 29 cases requiring adjunctive nitinol stents after balloon angioplasty (47.6% based on conventional angiography, 21.4% based on dynamic angiography, and 4.8% additional stents based on dynamic angiography). Complications included thromboembolism (2.3%), perforation (2.3%), pseudoaneurysm (2.3%), and myocardial infarction (2.3%). Stent fracture was present in three cases (7.1%) during the mean follow-up period of 18.3 months. The baseline ankle-brachial index significantly improved after the intervention, from 0.49 ± 0.11 to 0.92 ± 0.14 (P < .01). The Rutherford-Becker class decreased from 3.95 ± 0.76 to 1.76 ± 0.95 (P < .01) at 12 months. The 1-year primary, primary-assisted, and secondary patency rates were 75.2% ± 6.8%, 82.4% ± 6.0%, and 89.9% ± 4.8%, respectively. The limb salvage and amputation-free survival rates at 12 months were 91.6% and 87.0%, respectively. CONCLUSIONS: Balloon angioplasty with a provisional stent based on dynamic angiography is a feasible, safe, and effective therapy for patients with obstructive PA disease. Although the occurrence of stent fracture is still inevitable, patients with critical limb ischemia who have limited surgical options may get more benefits from the endovascular treatment of PA obstructive diseases.
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