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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-140 Single center case studies comprising of early carotid stenting in patients who present with ischemic strokes
ConclusionEarly carotid stenting should be considered, when waiting 4-6 weeks might not be a feasible option due to high risk of recurrent stroke. The rate of complications is lower than what has been published in case reports and metanalyses in the literature, likely due to improved periprocedural management of platelet activity and blood pressure. Our data suggests that early carotid stenting is feasible and should be considered an option in selected cases. Larger data sets will need to be analyzed to get a clear idea of the overall complication rate.ReferencesDen Hartog, A. G., et al. Delay to carotid endarterectomy in ...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Bhatt, S., Colasurdo, M., Raghuram, K. Tags: Electronic poster 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-033 Procedural outcome depending arterial diameter in the acute M2 occlusive ischemic stroke patients treated with endovascular thrombectomy
ConclusionsThis study demonstrated that the lowest quartile of M2 diameter was associated with procedural complication in the acute M2 occlusion patients treated with EVT. However, clinical outcome was not differed.Disclosures J. Kim: None. K. Lee: None. J. Kang: None. B. Kim: None. M. Han: None. H. Bae: None. S. Baik: None. L. Sunwoo: None. J. Kim: None. C. Jung: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Kim, J., Lee, K., Kang, J., Kim, B., Han, M., Bae, H., Baik, S., Sunwoo, L., Kim, J., Jung, C. Tags: Electronic poster abstracts Source Type: research

E-034 EndoVascular treatment of wide-neck aneurysms, an evaluation of safety and effectiveness of stryker surpass evolve™ flow diverter system
ConclusionThe EVOLVE prospective, multicenter, single arm, pre-market study (ClinicalTrials.gov NCT: NCT04195568), is designed to evaluate the safety, efficacy, and performance of the Surpass EVOLVE Flow Diverter System in the treatment of unruptured wide-neck, saccular or fusiform IA located in the ICA and its branches with an RVD of 2.5 to 5.0 mm.Disclosures A. Arthur: 2; C; Stryker Neurovascular. J. Fifi: 1; C; Stryker Neurovascular. 2; C; Stryker Neurovascular. H. Rice: 2; C; Stryker Neurovascular. A. Wakhloo: 2; C; Stryker Neurovascular. A. Coon: 2; C; Stryker Neurovascular. V. Pereira: 2; C; Stryker, Medtronic, Balt, Cerenovus.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Arthur, A., Fifi, J., Rice, H., Wakhloo, A., Coon, A., Pereira, V. Tags: Electronic poster abstracts Source Type: research

E-035 Safety and Efficacy of Stent-Assisted Coiling of Ruptured Wide Neck Aneurysms in Comparison to Balloon Assisted Coiling in Acute Subarachnoid Hemorrhage
ConclusionIn this study, we observed that SAC is as safe as BAC for acute treatment of RWA, with better aneurysm occlusion rates, less re-treatment and without an increase in hemorrhagic complications. Further studies are warranted to validate these findings in a prospective randomized manner before widespread application in the management of patients with acute aneurysmal subarachnoid hemorrhage.Disclosures S. Dandapat: None. A. Wallace: None. G. Lopez: None. Y. Kayan: None. A. Mendez Ruiz: None. A. Copelan: None. A. Dajles: None. A. Mendez Ruiz: None. C. Zevallos: None. D. Quispe-Orozco: None. M. Farooqui: None. J. Delga...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Dandapat, S., Wallace, A., Lopez, G., Kayan, Y., Mendez Ruiz, A., Copelan, A., Dajles, A., Mendez Ruiz, A., Zevallos, C., Quispe-Orozco, D., Farooqui, M., Delgado Almandoz, J., Ortega-Gutierrez, S. 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

Flow diverter treatment of intracranial vertebral artery dissecting pseudoaneurysms
Conclusions Our experience suggests that flow diverter stent treatment of intracranial vertebral artery dissecting pseudoaneurysms is safe, and associated with good occlusion rates and favorable clinical outcomes.
Source: Journal of NeuroInterventional Surgery - October 13, 2017 Category: Neurosurgery Authors: Cerejo, R., Bain, M., Moore, N., Hardman, J., Bauer, A., Hussain, M. S., Masaryk, T., Rasmussen, P., Toth, G. Tags: Hemorrhagic stroke Source Type: research

Efficacy of endovascular treatment and feasibility of stent-assisted coiling in the presence of severe and symptomatic vasospasm
Conclusions Endovascular treatment of intracranial aneurysms during severe and symptomatic vasospasm is safe and effective. Stent-assisted coiling in the presence of severe vasospasm is also feasible in wide-necked aneurysms with the additional benefits of mechanical vasodilation.
Source: Journal of NeuroInterventional Surgery - October 13, 2017 Category: Neurosurgery Authors: Andic, C., Kardes, O., Durdag, E., Gedikoglu, M., Akin, S. Tags: Hemorrhagic stroke Source Type: research

Stent retrieval thrombectomy in acute stoke is facilitated by the concurrent use of intracranial aspiration catheters
Conclusion When using SRs for intracranial stroke thrombectomy, the concurrent use of IACs is associated with a decrease in procedural time and thrombectomy attempts compared with use of SRs alone.
Source: Journal of NeuroInterventional Surgery - September 12, 2017 Category: Neurosurgery Authors: Jindal, G., Serulle, Y., Miller, T., Le, E., Wozniak, M., Phipps, M., Iyoha, M., Gupta, V., Shivashankar, R., Gandhi, D. Tags: Ischemic stroke Source Type: research

P2Y12 hyporesponse (PRU>200) is not associated with increased thromboembolic complications in anterior circulation Pipeline
Conclusions P2Y12 hyporesponse (PRU>200) is not associated with increased periprocedural complications in a contemporary series of patients undergoing anterior circulation PED placement. Titration of antiplatelet medications to P2Y12 >200 remains unindicated and may increase the risk of hemorrhagic complications.
Source: Journal of NeuroInterventional Surgery - September 12, 2017 Category: Neurosurgery Authors: Bender, M. T., Lin, L.-M., Colby, G. P., Lubelski, D., Huang, J., Tamargo, R. J., Coon, A. L. Tags: Clinical neurology Source Type: research

E-001 Fred treatment for intracranial aneurysms
Conclusions FRED treatment was safe and feasible. The complete occlusion or near complete occlusion were achieved in 85% of aneurysms at 12 months after FRED treatment for intracranial aneurysm. FRED treatment was safe and feasible in all patients in our study. Disclosures G. Wong: 2; C; Covidien/Medtronic. 3; C; Microvention/Terumo.
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Wong, G. Tags: Electronic Poster Abstracts Source Type: research

E-025 The development of a pre-clinical stroke model for stent-retriever thrombectomy
Conclusion The development of a stroke model amendable to mechanical thrombectomy provides a potential paradigm to study neuroprotection strategies coupled with clinical standard-of-care endovascular treatment. Further reproducibility studies are underway. References . JNIS 2012;4:307–313. . Stroke 2015;46:1099–1106. . AJNR2012;33:353–358. Disclosures O. Brooks: None. R. King: None. J. Chueh: None. M. Marosfoi: None. E. Nossek: 2; C; Rapid Medical. R. Eckhouse: 5; C; Rapid Medical. M. Gedulter: 5; C; Rapid Medical. M. Gounis: 1; C; Rapid Medical.
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Brooks, O., King, R., Chueh, J., Marosfoi, M., Nossek, E., Eckhouse, R., Gedulter, M., Gounis, M. Tags: Electronic Poster Abstracts Source Type: research

E-027 Matricidal cavernous aneurysms: a multicenter case series
Conclusion Matricidal aneurysms require careful consideration and planning. The restricted anatomy of the cavernous sinus can make successful execution of endovascular interventions difficult. Direct elastic compression of the parent artery does not respond to angioplasty and stenting the way that atherosclerotic stenosis does. Because of this, planning for possible parent vessel sacrifice is important. Abstract E-027 Table 1 Intended Treatments and Outcomes n Intended Treatment Failed Treatment (rate) All Patients 37 10 (27%) Flow Diversion 18 5 (28%) Parent Vessel Sacrifice 11 With Bypass 4 2 (50%) Without Bypass 7 0 ...
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Roberts, M., Nickele, C., Welch, B., Ban, V., Ringer, A., Kim, L., Levitt, M., Lanzino, G., Kan, P., Shallwani, H., Siddiqui, A., Elijovich, L., Arthur, A. Tags: Electronic Poster Abstracts Source Type: research

Safety and effectiveness of microsurgical clipping, endovascular coiling, and stent assisted coiling for unruptured anterior communicating artery aneurysms: a systematic analysis of observational studies
Conclusions While there are limitations to the data, EC resulted in a more favorable clinical outcome, and MC resulted in more robust aneurysm repair, for unruptured ACoA aneurysms. SAC had a higher treatment morbidity risk than EC, without reduction in retreatment rate. All treatments were effective in preventing SAH. The current pooled analysis of treatment outcomes provides a useful aid to pretreatment clinical decision making.
Source: Journal of NeuroInterventional Surgery - July 12, 2017 Category: Neurosurgery Authors: O'Neill, A. H., Chandra, R. V., Lai, L. T. Tags: Hemorrhagic stroke Source Type: research

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