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E-159 Neurointervention on distal MCA occlusions: a multi-center study demonstrating safety and efficacy
ConclusionNeurointervention in distal MCA strokes may be effective. Further prospective, randomized studies in larger cohorts are necessary to compare the efficacy and safety of this technique to other medical treatments of distal MCA strokes.Abstract E-159 Table 1Baseline Characteristics – Summary Statisticsn=228 Baseline ASPECTS 24h ASPECTS Age (mean, sd) 71.46, 14.62 0–5 2 10 Female (%) 115 (50.44%) 6–7 17 15 Location 8 22 13 L M2 122 9 57 22 L M3 21 10 96 13 R M2 81 Baseline NIHSS 24h NIHSS R M3 5 0–4 19 77 Baseline mRS (breakdown) 90 day mRS 5–8 50 28 mRS = 0 132 23 9–12 39 33 mR...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Siddiqui, N., De Leacy, R. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-200 Predictors of good clinical outcome after thrombectomy for distal medium vessel occlusions
ConclusionAn older age, a longer puncture to recanalization time and a higher baseline core volume were strongly associated with poor clinical outcomes, while successful recanalization (mTICI 2c-3) was associated with better outcomes after MT for DMVO.Disclosurse A. Guenego: None. B. Lubicz: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Guenego, A., Lubicz, B. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-215 Single stent assisted coiling for wide neck bifurcation aneurysms: a multi-center core lab validated analysis demonstrating safety and efficacy
ConclusionThis study represents the first multi-center, core-lab validated data of the safety and efficacy of the L-stenting single stent technique for wide-neck bifurcation aneurysms. Further prospective studies in larger cohorts are necessary to compare the efficacy and safety of this treatment to other endovascular techniques for treatment of wide neck bifurcation aneurysms.Disclosures N. Siddiqui: None. R. De Leacy: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Siddiqui, N., De Leacy, R. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

Outcomes of endovascular thrombectomy in patients selected by computed tomography perfusion imaging - a matched cohort study comparing nonagenarians to younger patients
Conclusions Nonagenarians were noted to have greater mortality and sICH rates following EVT compared with matched younger patients, which may be ameliorated by selecting patients with smaller CTP core volumes. Nonagenarians undergoing EVT had similar rates of successful reperfusion and functional independence compared with the younger cohort.
Source: Journal of NeuroInterventional Surgery - July 14, 2022 Category: Neurosurgery Authors: Rahangdale, R., Hackett, C. T., Cerejo, R., Fuller, N. M., Malhotra, K., Williamson, R., Hentosz, T., Tayal, A. H., Rana, S. S. Tags: Editor''s choice, Ischemic stroke Source Type: research

Three-month functional outcomes following endovascular thrombectomy during the first wave of the COVID-19 pandemic: a Canadian single-center cohort study
Conclusion In this single-center cohort study conducted in a Canadian pandemic epicenter, the first 6 months of the COVID-19 pandemic did not impact 90-day functional outcomes or death among EVT-treated patients.
Source: Journal of NeuroInterventional Surgery - February 16, 2022 Category: Neurosurgery Authors: Neves Briard, J., Dufort, G., Jacquin, G., Alesefir, W., Bereznyakova, O., Boisseau, W., Daneault, N., Deschaintre, Y., Diestro, J. D. B., Ducroux, C., Eneling, J., Gioia, L., Iancu, D. E., Odier, C., Raymond, J., Roy, D., Stapf, C., Weill, A., Poppe, A. Tags: COVID-19 The pandemic and neurointervention Source Type: research

Mortality after treatment of intracranial aneurysms with the Pipeline Embolization Device
Conclusions Delayed aneurysm rupture, distal intraparenchymal hemorrhage, and neurological compression were the main causes of mortality in patients with intracranial aneurysms treated with the PED. Large basilar aneurysms are associated with an increased risk of postoperative death and require increased attention and caution.
Source: Journal of NeuroInterventional Surgery - January 18, 2022 Category: Neurosurgery Authors: Kang, H., Luo, B., Liu, J., Zhang, H., Li, T., Song, D., Zhao, Y., Guan, S., Maimaitili, A., Wang, Y., Feng, W., Wang, Y., Wan, J., Mao, G., Shi, H., Wang, K., Yang, X. Tags: Hemorrhagic stroke Source Type: research

E-115 Identifying cognitive dysfunction after aneurysmal subarachnoid hemorrhage
ConclusionA brief, peer-led education session on cognitive dysfunction after aSAH improves knowledge of the problem and current recommendations in the literature for cognitive dysfunction after aSAH. Ongoing research is necessary to understand whether the education session and observed positive knowledge change translate to a change in practice and compliance with evidence-based recommendations for cognitive dysfunction screening after aSAH.Disclosures N. Hall: None. R. Chitale: None. M. Fusco: None. M. Froehler: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Hall, N., Chitale, R., Fusco, M., Froehler, M. Tags: Electronic poster abstracts Source Type: research

E-117 Evaluation of patient deaths after mechanical thrombectomy - A single center experience
ConclusionApproximately 50% of patients who died after mechanical thrombectomy died due to non-neurological causes.Disclosures A. Kuhn: None. V. Naragum: None. R. Catton: None. J. Singh: None. F. Massari: None. K. de Macedo Rodrigues: None. M. Gounis: 1; C; National Institutes of Health (NIH), the United States – Israel Binational Science Foundation, Anaconda, ApicBio, Axovant, Cerenovus, Cook Medical, Gentuity, Imperative Care, InNeuroCo, Magneto. 2; C; Cerenovus, Imperative Care, phenox, Medtronic Neurovascular, Route 92 Medical, Stryker Neurovascular. 4; C; Imperative Care, InNeuroCo and Neurogami. A. Puri: 1; C; ...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Kuhn, A., Naragum, V., Catton, R., Singh, J., Massari, F., de Macedo Rodrigues, K., Gounis, M., Puri, A. Tags: Electronic poster abstracts Source Type: research

O-005 Comparison of on-label versus off-label treatment of intracranial aneurysms with the pipeline embolization devices
ConclusionIn real-world practice, off-label uses of PED can achieve similar safety and efficacy to on-label uses, though there may be a slightly higher rate of ischemic complications in off-label uses. Expert judgment is a useful supplement to official guidelines when assessing reasonable PED use beyond its approved indications.Disclosures S. Cler: None. D. Lauzier: None. A. Kansagra: 2; C; Penumbra, Microvention, iSchemaView.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Cler, S., Lauzier, D., Kansagra, A. Tags: Oral abstracts Source Type: research

E-008 Variation in subarachnoid hemorrhage presentation and demographics in California during the COVID-19 pandemic: A UC stroke consortium study
ConclusionsCOVID19(+) patients presenting with SAH were younger than COVID(-) controls, and there was a trend toward underrepresentation of Hispanic patients in the COVID(+) group. Recognizing COVID19 status as a factor in SAH presentation is important to mitigate healthcare disparities in California.Disclosures A. Gautam: None. T. Caton: None. K. Narsinh: None. A. Baker: None. S. Hetts: None. D. Cooke: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Gautam, A., Caton, T., Narsinh, K., Baker, A., Hetts, S., Cooke, D. Tags: Electronic poster abstracts Source Type: research

E-083 Safety and efficacy of xact stent in tandem internal carotid artery and intracranial large vessel occlusion
ConclusionsThe Xact carotid stent is safe and efficacious in the treatment of tandem ICA/ICAO lesions. Larger prospective trials are needed to help confirm our retrospective findings.Disclosures M. Oliver: None. G. Dawod: None. S. Zaidi: None. M. Jumaa: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Oliver, M., Dawod, G., Zaidi, S., Jumaa, M. Tags: Electronic poster abstracts Source Type: research

E-085 Interventional and diagnostic neuroradiology fellowship education in the COVID-19 era
ConclusionElective neurointerventional case numbers decreased as a result of the COVID-19 pandemic, particularly impacting the fourth quarter of the 2019-2020 academic year (April - June). Similarly, there was a sizable decrease in diagnostic neuroradiology case volume during this same time period. The decrease in procedural and diagnostic neuroradiology cases raised concerns regarding the educational experience for both diagnostic and neurointerventional radiology fellows. However, as a result of decreased case volume, fellowship education was rapidly augmented with a wide variety of online webinars, lectures, case confer...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Wilseck, Z., Bamezai, S., Novakovic, N., Copelan, A., Wilseck, J., Srinivasan, A., Pandey, A., Thompson, G., Gemmete, J., Chaudhary, N. Tags: Electronic poster abstracts Source Type: research

O-005 Utility of aspects region location in predicting stroke thrombectomy outcomes
Conclusions In the entire cohort, the insula, M5, and lentiform nuclei were the most commonly affected ASPECTS-based regions but were not significantly associated with poor clinical outcomes. The M4 and M6 ASPECTS–based regions were most predictive of decreased long-term functional independence. These results may assist the future use of weighted ASPECTS-based region scoring to improve the utility of this tool for stroke thrombectomy patient selection. Abstract O-005 Figure 1 Disclosures K. Fukuda: None. K. Keppetipola: None. M. Davison: None. M. Chen: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Fukuda, K., Keppetipola, K., Davison, M., Chen, M. Tags: Oral Abstracts Source Type: research

O-010 Clinical imaging mismatch versus perfusion imaging mismatch selection for stroke patients undergoing mechanical thrombectomy
Conclusion We were unable to demonstrate a difference between the PIM and CCM selection modalities in the prediction of clinical outcomes. However, PIM seems to unjustifiably disqualify a significant proportion of patients that still benefit from reperfusion. In contrast with CCM, the existence of PIM does not seem to be a good discriminator of good outcomes. Future prospective studies are warranted. Disclosures J. Grossberg: None. M. Bouslama: None. D. Haussen: None. L. Rebello: None. M. Frankel: None. R. Nogueira: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Grossberg, J., Bouslama, M., Haussen, D., Rebello, L., Frankel, M., Nogueira, R. Tags: Oral Abstracts Source Type: research

E-033 The smoking-thrombolysis paradox in large vessel occlusion acute ischemic stroke after endovascular therapy
Conclusion In stroke patients treated with mechanical thrombectomy, smoking does not seem to be associated with outcomes regardless of stroke subtype or location. Disclosures J. Grossberg: None. M. Bouslama: None. L. Rebello: None. D. Haussen: None. M. Frankel: None. R. Nogueira: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Grossberg, J., Bouslama, M., Rebello, L., Haussen, D., Frankel, M., Nogueira, R. Tags: Electronic Poster Abstracts Source Type: research

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