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  • Title: Thromboembolic Risk of Endovascular Intervention for Lower Extremity Deep Venous Thrombosis.
    Author: Lindsey P, Echeverria A, Poi MJ, Matos J, Bechara CF, Cheung M, Lin PH.
    Journal: Ann Vasc Surg; 2018 May; 49():247-254. PubMed ID: 29197610.
    Abstract:
    BACKGROUND: This study evaluated the risk of thromboembolism during endovascular interventions in patients with symptomatic lower extremity deep vein thrombosis (DVT) METHODS: Clinical records of all patients who underwent endovascular interventions for symptomatic lower extremity DVT from 2001 to 2017 were retrospectively analyzed using a prospectively maintained database. Only patients who received an inferior vena cava (IVC) filter were included in the analysis. Trapped intrafilter thrombus was assessed for procedure-related thromboembolism. Clinical outcomes of thrombus management and thromboembolism risk were analyzed. RESULTS: A total 172 patients (mean age 57.4 years, 98 females) who underwent 174 endovascular DVT interventions were included in the analysis. Treatment strategies included thrombolytic therapy (64%), mechanical thrombectomy (n = 86%), pharmacomechanical thrombolysis (51%), balloon angioplasty (98%), and stent placement (28%). Thrombectomy device used included AngioJet (56%), Trellis (19%), and Aspire (11%). Trapped IVC filter thrombus was identified in 58 patients (38%) based on the IVC venogram. No patient developed clinically evident pulmonary embolism (PE). IVC filter retrieval was performed in 98 patients (56%, mean 11.8 months after implantation). Multivariate analysis showed that iliac vein occlusion (P = 0.04) was predictive for procedure-related thromboembolism. CONCLUSIONS: Iliac vein thrombotic occlusion is associated with an increased thromboembolic risk in DVT intervention. Retrievable IVC filter should be considered when performing percutaneous thrombectomy in patients with iliac venous occlusion to prevent PE.
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