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E-074 Case report: reconstructive endovascular treatment of symptomatic long segment dissection with pseudo-aneurysm of dominant left vertebral artery
We report a case of 27 year old Caucasian female with no known medical history who presented to our hospital with several days’ history of posterior headache and neck pain. CT head was unremarkable. CTA head and neck showed short segment of severe stenosis secondary to dissection at the V2-V3 junction of dominant left vertebral artery with associated 6 mm pseudo aneurysm. Right vertebral artery was hypoplastic and it ended in PICA. The dissection was presumed to be spontaneous as patient denied any trauma or strenuous neck manipulation or family history of connective tissue disorders. She was started on antiplatelet ...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Soomro, J., Greco, J., Whitis, J., Rao, S., Yoo, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-091 Intracranial atherosclerotic disease leads to poor mechanical thrombectomy outcomes in cocaine associated acute ischemic stroke with large vessel occlusions
Conclusion: In this case series, intracranial atherosclerosis secondary to cocaine use and vasospasm contributed to unsuccessful recanalization and reocclusion in patients undergoing MT with poor outcomes. Further studies are needed to ascertain strategies for improved outcomes in patients with LVO related to cocaine use.Disclosures M. Memon: None. M. Kushnirsky: None. S. Koch: None. D. Yavagal: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Memon, M., Kushnirsky, M., Koch, S., Yavagal, D. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-092 Use of balloon-guide catheters for concomitant mechanical thrombectomy and carotid revascularization with flow-arrest results in significantly lower sICH and better 90-day outcomes in tandem stroke patients
ConclusionUse of balloon-guide catheters for concomitant mechanical thrombectomy and carotid revascularization with flow-arrest results in significantly lower sICH and better 90-day outcomes in tandem stroke patients.Disclosures A. Baig: None. J. Neumaier: None. M. Waqas: None. A. Monteiro: None. J. Cappuzzo: None. W. Khawar: None. B. Donnelly: None. E. Levy: 2; C; : Claret Medical, GLG Consulting, Guidepoint Global, Imperial Care, Medtronic, Rebound, StimMed, Misionix, Mosiac, Clarion, IRRAS. 4; C; NeXtGen Biologics, RAPID Medical, Claret Medical, Cognition Medical, Imperative Care, Rebound Therapeutics, StimMed, Three Ri...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Baig, A., Neumaier, J., Waqas, M., Monteiro, A., Cappuzzo, J., Khawar, W., Donnelly, B., Levy, E., Siddiqui, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-101 Rescue stenting for intracranial stenosis in emergent large vessel occlusion patients using the neuroform atlas stent through the gateway balloon: preliminary report
ConclusionOur preliminary experience showed the diminished risk of guidewire perforation as well as potentially decreased operative time and early reperfusion by deploying the Neuroform stent through a compatible gateway balloon microcatheter. This should be investigated further in large multicenter studiesDisclosures M. Memon: None. T. Nisar: None. J. Lee: None. A. Biswas: None. A. Singla: None. P. Khandelwal: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: MEMON, M., Nisar, T., Lee, J., Biswas, A., Singla, A., Khandelwal, P. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-139 Use of drug-eluding, balloon-expandable resolute onyx coronary stent as a new treatment strategy for vertebral artery ostial stenosis
ConclusionWe report the first clinical series investigating the use of drug-eluding, balloon-expandable Resolute Onyx coronary stent as a safe, efficacious, and durable treatment option for both symptomatic and asymptomatic vertebral ostial stenosis.Disclosures J. Lim: None. A. Baig: None. A. Aguirre: None. A. Monteiro: None. E. Levy: 2; C; : Claret Medical, GLG Consulting, Guidepoint Global, Imperial Care, Medtronic, Rebound, StimMed, Misionix, Mosiac, Clarion, IRRAS.. 4; C; NeXtGen Biologics, RAPID Medical, Claret Medical, Cognition Medical, Imperative Care, Rebound Therapeutics, StimMed, Three Rivers Medical. A. Siddiqu...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Lim, J., Baig, A., Aguirre, A., Monteiro, A., Levy, E., Siddiqui, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-153 Transfemoral flow-reversal using walrus balloon-guide catheter for carotid artery stenting technical description and single-center experience
ConclusionsIn our institution’s experience, this technique was safe, feasible and efficient, with 100% technical success and no periprocedural thromboembolic complications. More extensive studies are needed to establish the role of proximal protection with flow-reversal using modern BGCs.Disclosures J. Cappuzzo: None. A. Monteiro: None. M. Waqas: None. A. Baig: None. D. Popoola: None. F. Almayman: None. W. Khawar: None. Z. Farkash: None. A. Siddiqui: 2; C; Amnis Therapeutics, Apellis Pharmaceuticals, Inc., Boston Scientific, Canon Medical Systems USA, Inc., Cardinal Health 200, LLC, Cerebrotech Medical Systems, Inc.,...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Cappuzzo, J., Monteiro, A., Waqas, M., Baig, A., Popoola, D., Almayman, F., Khawar, W., Farkash, Z., Siddiqui, A., Levy, E., Snyder, K. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-187 Pipeline embolization stent for treatment of giant supraclinoid aneurysms: a case series
ConclusionThe Pipeline embolization device is a novel technique that can be utilized for treatment of giant cerebrovascular aneurysms with emerging evidence of immediate and long-term success. Further patient enrollment and clinical trials will be required to assess its efficacy in comparison to other endovascular and surgical approaches for the treatment of giant aneurysms.Disclosures M. Fana: None. O. Alsrouji: None. M. Rehman: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Fana, M., Alsrouji, O., Rehman, M. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

Association of residual stenosis after balloon angioplasty with vessel wall geometries in intracranial atherosclerosis
Conclusions Lower NWI and NWTI of the target artery on high-resolution MR-VWI were associated with low residual stenosis in patients with ICAD after PTBA.
Source: Journal of NeuroInterventional Surgery - July 14, 2022 Category: Neurosurgery Authors: Hou, Z., Zhang, Z., Yan, L., You, J., Wan, M., Song, J., Pan, Y., Hui, F., Miao, Z., Lou, X., Wang, Y., Jing, J., Ma, N. Tags: Ischemic stroke Source Type: research

Carotid artery revascularization using the Walrus balloon guide catheter: safety and feasibility from a US multicenter experience
Conclusion Walrus BGC for proximal flow control is safe and effective during eCAS and tCAS. Procedural success was achieved in all cases, with favorable safety and functional outcomes on short-term follow-up.
Source: Journal of NeuroInterventional Surgery - June 16, 2022 Category: Neurosurgery Authors: Salem, M. M., Kvint, S., Baig, A. A., Monteiro, A., Cortez, G. M., Kuhn, A. L., Goren, O., Dalal, S., Jankowitz, B. T., Choudhri, O., Raper, D., Tanweer, O., Jabbour, P., Kan, P., Starke, R. M., Levy, E. I., Griessenauer, C. J., Puri, A. S., Hanel, R., Si Tags: New devices New devices and techniques Source Type: research

Proximal Internal Carotid artery Acute Stroke Secondary to tandem Occlusions (PICASSO) international survey
Conclusions The PICASSO survey demonstrates multiple areas of uncertainty regarding the medical and endovascular management of TOs. Experts acknowledged the need for further evidence and their willingness to participate in a randomized controlled trial to evaluate the best treatment for the cervical TO lesion.
Source: Journal of NeuroInterventional Surgery - November 18, 2021 Category: Neurosurgery Authors: Zevallos, C. B., Farooqui, M., Quispe-Orozco, D., Mendez-Ruiz, A., Patterson, M., Below, K., Martins, S. O., Mansour, O. Y., MontAlverne, F., Nguyen, T. N., Lemme, L., Siddiqui, A. H., Fraser, J. F., Jadhav, A. P., Zaidat, O. O., Ortega-Gutierrez, S. Tags: Ischemic stroke Source Type: research

EP62 Endovascular transcarotid artery revascularization using the walrus balloon guide catheter: safety and feasibility from multicenter experience
ConclusionWe present a large multicenter experience of eTCAR technique utilizing the Walrus BGC. In all cases elective or emergent carotid stenting was successful with proximal flow arrest or flow reversal with or without distal protection device with favorable safety profile on follow-up.DisclosureJan-Karl Burkhardt, consultant for Q`Apel Medical, Longeviti Neuro Solutions
Source: Journal of NeuroInterventional Surgery - August 24, 2021 Category: Neurosurgery Authors: Salem, M., Griessenauer, C., Kvint, S., Baig, A., Monteiro, A., Cortez, G., Kuhn, A., Choudhri, O., Goren, O., Dalal, S., Jabbour, P., Starke, R., Puri, A., Hanel, R., Levy, E., Siddiqui, A., Burkhardt, J.-K. Tags: Treatment Source Type: research

Prophylactic administration of tirofiban for preventing thromboembolic events in flow diversion treatment of intracranial aneurysms
Conclusions The current study suggested that prophylactic administration of tirofiban combined with conventional oral DAT seems safe and efficient for preventing TEs during FD treatment of unruptured intracranial aneurysms. Balloon angioplasty and prolonged procedure are associated with a high risk of TEs.
Source: Journal of NeuroInterventional Surgery - August 13, 2021 Category: Neurosurgery Authors: Wu, Q., Shao, Q., Li, L., Liang, X., Chang, K., Li, T., He, Y. Tags: Hemorrhagic stroke Source Type: research

E-004 Focal intracranial vasculopathy as a manifestation of COVID-19-associated acute ischemic stroke
ConclusionTo our knowledge, our case is the first to illustrate the potential for COVID-19 infection to present as a focal intracranial vasculopathy in an otherwise healthy young-patient, resulting in acute ischemic stroke without an underlying hypercoagulable state. Rescue intracranial stenting was necessary to maintain vessel patency and restore intracranial flow.Disclosures A. Mahapatra: None. A. Witek: None. G. Toth: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Mahapatra, A., Witek, A., Toth, G. Tags: Electronic poster abstracts Source Type: research

E-020 A novel technique to treat tandem occlusion by utilizing stentriever as the distal protection device with aspiration catheter
ConclusionThe novel technique to revascularize tandem occlusion utilizing a stent-retriever as a distal protection device along with an aspiration catheter and a balloon-guided catheter is feasible. Immediate flow restoration at the distal occlusion site with simultaneous revascularization of the proximal ICA steno-occlusive lesion potentially improves the puncture to reperfusion timeDisclosures S. Suzuki: None. J. Granstein: None. A. Chan: None. B. Ball: None. V. Vu: None. K. Golshani: None. I. Yuki: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Suzuki, S., Granstein, J., Chan, A., Ball, B., Vu, V., Golshani, K., Yuki, I. Tags: Electronic poster abstracts Source Type: research

E-025 Aspiration thrombectomy of acute ischemic stroke patients with intracranial atherosclerotic disease or tandem lesion
ConclusionAspiration thrombectomy was effective in restoring blood flow and resulting in good 90-day functional outcome in AIS patients with anterior circulation tandem lesion, and the 90-day mortality rate in these patients was low. No significant difference in outcomes was detected between patients with a stent and patients without a stent.Disclosures O. Zaidat: 1; C; Genentech, Medtronic Neurovascular, Stryker. 2; C; Codman, Medtronic Neurovascular, National Institutes of Health StrokeNet, Penumbra, Stryker. J. Fifi: 1; C; Microvention, Penumbra, Stryker. 2; C; Microvention, Stryker. 4; C; Imperative Care. A. Hassan: 2;...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Zaidat, O., Fifi, J., Hassan, A. Tags: Electronic poster abstracts Source Type: research

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