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• W3048111175 abstract "<h3>Introduction</h3> Endovascular stroke thrombectomy is currently the standard of care for anterior circulation large vessel occlusions (LVO), based on multiple randomized control trials. Due to the grave consequences of posterior circulation occlusions, no randomized control trials have been performed to assess the benefit and outcome of mechanical thrombectomy in the posterior circulation. We aim to evaluate the real-world evidence for mechanical thrombectomy in posterior circulation LVO using the Neurovascular Quality Initiative (NVQI) registry. <h3>Methods</h3> Data from the NVQI registry database was analyzed and compared for anterior versus posterior circulation acute ischemic stroke treated with endovascular thrombectomy in 23 US centers (17 states) from February 2015 to October 2019. Mann Whitney and Fischer exact tests were used for continuous and categorical variables, respectively. <h3>Results</h3> Posterior circulation (PC) thrombectomy was performed in a minority of 9.2% (284/3103 patients) compared to anterior circulation (AC) thrombectomy. LVO sites were predominantly basilar artery occlusions (68% basilar trunk and 19.4% basilar apex/PCA) with the remainder as vertebral artery occlusions (12.7%). Mean age at the intervention was 66±15.5 years (61.6% male) PC versus 68.8±15.4 years AC, p=0.004. Mean NIHSS at presentation was 17±10.2 PC versus 15.8±6.8 AC, p=0.007. CT/CTA was performed in 94% of cases whereas MRI was performed in 19% of cases (versus 14% AC, p=0.03). Median arrival to groin puncture time was 110 min PC versus 87 min AC, onset to groin time was 375 min PC versus 291 min AC, and median procedure time was 38 min PC versus 33 min AC. Successful recanalization was achieved in 84.5% (TICI 2b/3) versus 84% AC (p=0.87) with 50.4% reporting single pass recanalization and 3.9% technical failures (3.2% access related). Intraprocedural complications were reported in 4.9% of cases (0.7% vessel perforations, 0.4% hemorrhagic transformations, 1.4% non-target embolization, and 1.8% iatrogenic dissections). Mean post-operative length of stay was 9.5±9.5 days, with 24.6% in hospital mortality versus 11.2% AC, (p<0.001). Clinical 90 day follow up mRS was reported in 64.2% of cases with independent mRS≤2 achieved in 40.4% versus 37.3% AC, p=0.31). 90-day mortality was reported in only 0.9% of cases. Missing data was most common in technical failure, intraprocedural complications, and 90-day mRS amounting to 16.5%, 17.3% and 35.8% of cases, respectively. <h3>Conclusion</h3> Real-world evidence from the NVQI procedural registry suggests posterior circulation stroke to be more common in younger patients with significantly higher NIHSS presentations, and increased utilization of preprocedural MRI for endovascular thrombectomy selection. Given the historical high morbidity and mortality of basilar artery occlusion, there is strong evidence for the benefit of mechanical thrombectomy in the posterior circulation with 3-month functional outcomes nearly identical to thormbectomy outcomes in the anterior circulation. <h3>Disclosures</h3> <b>D. Cantrell:</b> None. <b>R. Abdalla:</b> None. <b>A. Shaibani:</b> None. <b>M. Hurley:</b> None. <b>B. Jahromi:</b> None. <b>M. Potts:</b> None. <b>S. Ansari:</b> None." @default.
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• W3048111175 date "2020-08-01" @default.
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• W3048111175 title "E-047 Acute stroke thrombectomy in the posterior circulation in the united states: real world evidence from the neurovascular quality initiative-quality outcomes database" @default.
• W3048111175 doi "https://doi.org/10.1136/neurintsurg-2020-snis.83" @default.
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