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  • Title: Adjuvant intra-arterial rt-PA injection at the initially deployed solitaire stent enhances the efficacy of mechanical thrombectomy in acute ischemic stroke.
    Author: Yi TY, Chen WH, Wu YM, Zhang MF, Lin DL, Lin XH.
    Journal: J Neurol Sci; 2018 Mar 15; 386():69-73. PubMed ID: 29406970.
    Abstract:
    BACKGROUND: Both intra-arterial recombinant tissue plasminogen activator (rt-PA) and stent retrieval are effective for treating acute ischemic stroke. The goal of this study was to evaluate the effectiveness of stent retrieval combined with intra-arterial rt-PA administration via micro-catheter (called the complex technique) in acute ischemic stroke. MATERIAL AND METHODS: A retrospective analysis was performed of 93 consecutive patients treated between 2015 and 2017 for occlusions of the intracranial large artery using the complex technique (n=37) or stent retrieval alone (n=56) in our stroke center. Data on procedure duration, number of passes, and angiographic findings were collected. Successful recanalization was defined as the accomplishment of grade 3 or 2b modified Treatment in Cerebral Ischemia recanalization in 1 or 2 passes. RESULTS: Compared to the stent retrieval group, complex technique group had a higher successful revascularization rate with 1 or 2 passes with the stent retriever (81.1% versus 51.8%, P=0.004), a shorter procedure time (59±34min versus 94±56min, P<0.001), fewer passes of the stent retriever (1.8±1.1 versus 2.5±1.4, P=0.012), a better prognosis (70.3% versus 48.2%, P=0.035), a lower embolic complication rate (18.9% versus 39.3%, P=0.038), similar mortality (13.5% versus 21.4%, P=0.334) and similar intracranial hemorrhage symptoms (2.7% versus 12.5%, P=0.204). Intra-arterial rt-PA administration was an independent negative predictor of procedure time (OR=-0.292, P=0.003). CONCLUSION: Mechanical thrombectomy utilizing stent retrieval combined with intra-arterial rt-PA administration in the anterior circulation of acute ischemic stroke patients improved the angiographic results and shortened the procedure duration without increasing adverse events.
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