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E-006 Carotid artery revascularization using the walrus balloon guide catheter: safety and feasibility from a US multicenter experience
ConclusionWalrus 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.Disclosures M. Salem: None. S. Kvint: None. A. Baig: None. A. Monteiro: None. G. Cortez: None. A. Luisa Kuhn: None. O. Goren: None. S. Dalal: None. B. Jankowitz: None. O. Choudhri: None. D. Raper: None. O. Tanweer: None. P. Jabbour: None. R. Starke: None. E. Levy: None. C. Griessenauer: None. A. Puri: None. R. Hanel: None. A. Siddiqui: None. J. Burkhardt: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Salem, M., Kvint, S., Baig, A., Monteiro, A., Cortez, G., Luisa Kuhn, A., Goren, O., Dalal, S., Jankowitz, B., Choudhri, O., Raper, D., Tanweer, O., Jabbour, P., Starke, R., Levy, E., Griessenauer, C., Puri, A., Hanel, R., Siddiqui, A., Burkhardt, J. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-007 Immediate post-thrombectomy dual-energy CT virtual non-contrast imaging for final infarct prediction
ConclusionsImmediate post-thrombectomy DECT with VNC post-processing may more accurately visualize infarcted tissue and aid in prognostication and guiding treatment decisions despite suffering from low inter-rater agreement. Further larger scale studies are warranted.Disclosures C. Kim: None. S. Moghimi: None. A. Rohr: None. F. Settecase: 1; C; Stryker Neurovascular, Microvention. 2; C; Stryker Neurovascular. 6; C; Medtronic.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Kim, C., Moghimi, S., Rohr, A., Settecase, F. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-019 tcar
ConclusionsOur analysis of a single-center cohort demonstrates that TCAR is a safe and effective treatment for symptomatic carotid stenosis, with a low perioperative stroke risk. The present study’s findings concur with the combined adverse outcome rate of 3.5% reported in the ROADSTER trial.Disclosures A. Bajaj: None. S. Monje: None. C. Ayala: None. J. Poggi: None. E. Shaaya: None. J. Feler: None. K. Moldovan: None. C. Doberstein: None. R. McTaggart: None. R. Torabi: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Bajaj, A., Monje, S., Ayala, C., Poggi, J., Shaaya, E., Feler, J., Moldovan, K., Doberstein, C., McTaggart, R., Torabi, R. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-022 Treatment of giant intracranial aneurysms using the pipeline flow-diverting stent: long-term results from the international retrospective study of the pipeline embolization device (IntrePED)
ConclusionsAlthough the procedure-related neurological morbidity and mortality rates are not insignificant, this study confirms the feasibility and long-term efficacy of the Pipeline Embolization Device in the treatment of giant intracranial aneurysms.Disclosures V. Ravindra: None. D. Kallmes: None. P. Lylyk: 1; C; Target, Micrus Boston Scientific, Stryker, Cordis, Microvention. 2; C; Chesnut Medical, eV3, Covidien, Medtronic, Surpass, Cardiaitis, Sequent, Phenox, Cerus, Medina Medical. R. Hanel: None. R. Grandhi: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Ravindra, V., Kallmes, D., Lylyk, P., Hanel, R., Grandhi, R. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-023 Predictors of outcomes in tandem anterior circulation occlusions following mechanical thrombectomy
In this study, we present outcomes of patients undergoing tandem mechanical thrombectomy. We demonstrate that stenting is associated with improved final reperfusion, but increased odds of asymptomatic ICH. Additional clinical trials should be performed to optimize the procedure and improve patient outcomes.Disclosures J. Catapano: None. D. Farhadi: None. A. Naik: None. S. Koester: None. E. Winkler: None. V. Srinivasan: None. K. Karahalios: None. J. Rulney: None. S. Desai: None. A. Jadhav: None. F. Albuquerque: None. A. Ducruet: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Catapano, J., Farhadi, D., Naik, A., Koester, S., Winkler, E., Srinivasan, V., Karahalios, K., Rulney, J., Desai, S., Jadhav, A., Albuquerque, F., Ducruet, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-030 Feasibility and safety of mechanical thrombectomy for sole primary angular artery M3 and M4 MCA occlusions
ConclusionAngular artery occlusions often present with disabling symptoms, commonly including speech deficits and limb paresis. Our limited data suggests that mechanical thrombectomy of the angular artery is feasible and safe. As with thrombectomy in other vascular territories, and amongst other factors, patient outcome is influenced by grade of reperfusion.Disclosures A. Kuhn: None. J. Singh: None. F. Massari: None. A. Puri: 1; C; NIH, Microvention, Cerenovus, Medtronic Neurovascular and Stryker Neurovascular. 2; C; Medtronic Neurovascular, Stryker NeurovascularBalt, Q’Apel Medical, Cerenovus, Microvention, Imperati...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Kuhn, A., Singh, J., Massari, F., Puri, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-035 Intra-arterial tissue plasminogen activator (IA-tPA) as first line and salvage therapy to achieve complete reperfusion in acute ischemic stroke
ConclusionFor tough-to-remove clots, IA-tPA as first-line and salvage therapy can be potentially efficacious with adequate results.Disclosures M. Waqas: None. S. Housley: None. A. Baig: None. J. Cappuzzo: None. A. Monteiro: None. W. Khawar: None. E. Levy: 2; C; Claret Medical, GLG Consulting, Guidepoint Global, Imperial Care, Medtronic, Rebound, StimMed, Misionix, Mosiac, Clarion, IRRAS. 3; C; Medtronic. 4; C; NeXtGen Biologics, RAPID Medical, Claret Medical, Cognition Medical, Imperative Care, Rebound Therapeutics, StimMed, Three Rivers Medical. 6; C; Reimbursement for travel and food for some meetings with the CNS and AB...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Waqas, M., Housley, S., Baig, A., Cappuzzo, J., Monteiro, A., Khawar, W., Levy, E., Siddiqui, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-048 Antithrombotics for emergent stenting in acute stroke
ConclusionTirofiban continuous infusion is a safe and possibly effective strategy for emergent stenting in acute ischemic stroke.Disclosures S. Lahoti: None. K. Limaye: None. C. Zevallos: None. K. Dlouhy: None. M. Hayakawa: None. E. Samaniego: None. D. Hasan: None. S. Ortega: 2; C; Medtronic, Stryker Neurovascular, Microvention. C. Derdeyn: 1; C; Siemens Healthineers. 4; C; Euphrates Vascular, Inc. 6; C; DSMB: Penumbra (MIND), NoNO (ESCAPE NA1 and FRONTIER).
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Lahoti, S., Limaye, K., Zevallos, C., Dlouhy, K., Hayakawa, M., Samaniego, E., Hasan, D., Ortega, S., Derdeyn, C. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

P-017 Triple therapy versus dual antiplatelet therapy for dolichoectatic vertebrobasilar fusiform aneurysms treated with flow-diverters: the last frontier?
ConclusionsPatients with dolichoectatic VBFAs treated with flow-diversion and kept under triple therapy had less ischemic strokes, less progression of symptoms and overall better outcomes at last follow-up than similar patients kept under DAPT.Disclosures A. Siddiqui: 2; C; Amnis Therapeutics, Apellis Pharmaceuticals, Inc., Boston Scientific, Canon Medical Systems USA, Inc., Cardinal Health 200, LLC, Cerebrotech Medical Systems, Inc., Cerenovus, Cerevatech Medical, Inc.. 4; C; Adona Medical, Inc., Amnis Therapeutics, Bend IT Technologies, Ltd., BlinkTBI, Inc, Buffalo Technology Partners, Inc., Cardinal Consultants, LLC, Ce...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Siddiqui, A., Monteiro, A., Hanel, R., Kan, P., Mohanty, A., Cortez, G., Rabinovich, M., Matouk, C., Sujijantarat, N., Ebersole, K., Fry, L., Natarajan, S., Owusu-Adjei, B., Ortega-Gutierrez, S., Vivanco-Suarez, J., Wakhloo, A., Levy, E. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-019 Comparative effectiveness of stent-assisted coiling and woven endobridge (WEB) embolization for the treatment of unruptured wide-neck bifurcation intracranial aneurysms
ConclusionMid-term complete and adequate occlusion rates were similar between patients treated with WEB and SAC. Given the comparable outcomes, there may be equipoise in treatment options for WNBAs.Abstract P-019 Table 1Baseline patient and aneurysm morphology parameters between treatment groups Aneurysm parameters* WEB (n=27) Stent-coil (n=54) p-value Age 63 (50–69) 65 (57–69) 0.511 Gender, male 6 (22%) 12 (22%) 1.000 Smoking Status Current smoker 9 (33%) 9 (17%) 0.235 Prior Smoker 9 (33%) 22 (41%) Never Smoker 9 (33%) 23 (43%) Location Acomm 9 (33%) 20 (37%) 0.772 Basilar apex 6 (22%) 17 (32%) Carotid termin...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Kashkoush, A., Desai, A., Davison, M., Achey, R., Mahapatra, A., Patterson, T., Moore, N., Bain, M. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-025 Evaluation of pure subarachnoid hemorrhage after mechanical thrombectomy in a series of 781 consecutive patients
ConclusionSubarachnoid hyperdensity in head CT scans within the first 24 hours after mechanical thrombectomy is relatively archetypal. The issue arises in discriminating between pure contrast stagnation and other bleeding types to conduct a more specific treatment for patients with such complications, even though SAH post-thrombectomy carries a favorable prognosis.Disclosures V. Benalia: None. G. Cortez: None. A. Aghaebrahim: None. E. Sauvageau: None. R. Hanel: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Benalia, V., Cortez, G., Aghaebrahim, A., Sauvageau, E., Hanel, R. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-026 Mild coagulopathy is associated with worse outcomes following stroke thrombectomy
ConclusionsIn stroke thrombectomy patients, mildly elevated INR is associated with worse clinical outcomes after recanalization and may worsen the mortality risk of hemorrhagic transformations.Abstract P-026 Figure 1Disclosures H. Chen: None. G. Ahmad: None. M. Colasurdo: None. K. Yarbrough: None. C. Schrier: None. M. Phipps: None. C. Cronin: None. P. Mehndiratta: None. J. Cole: None. M. Wozniak: None. T. Miller: None. D. Gandhi: None. G. Jindal: None. S. Chaturvedi: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Chen, H., Ahmad, G., Colasurdo, M., Yarbrough, K., Schrier, C., Phipps, M., Cronin, C., Mehndiratta, P., Cole, J., Wozniak, M., Miller, T., Gandhi, D., Jindal, G., Chaturvedi, S. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-028 Safety and outcome of mechanical thrombectomy in medium and distal vessel occlusions for patients with NIH stroke scale score of
ConclusionMT of medium and distal vessel occlusions in patients with low NIHSS appears feasible and safe. NIHSS score alone should not be the deciding factor on offering MT or not. An individualized decision-making approach aimed towards maximizing the patient’s outcome should be the goal.Abstract P-028 Table 1 All patients Medical Management Mechanical Thrombectomy p-value Mean Age 67 years 68 years 65 years 0.337 Gender – Male 38 20 18 Gender – Female 26 17 9 Mean Baseline NIHSS 4 (range 2–5) 4 (range 2–5) 5 (range 3–5) Mean ASPECTS 10 (range 8–10) 10 (range 7–10) 10 (rang...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Kuhn, A., Nedelcu, S., Henninger, N., Singh, J., Massari, F., Puri, A. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-030 Mechanical thrombectomy in medium vessel occlusions using the novel aspiration MIVI Q catheters: an international multicenter experience
ConclusionsTreatment of MeVO patients with Q catheters resulted in optimal angiographic and clinical outcomes. Though angiographic results were similar between primary and secondary MeVOs, the first had less severe presentation and better outcomes at 90-days than the latter.Disclosures A. Monteiro: None. L. Makalanda: None. J. Wareham: None. J. Jones: None. P. Dhillon: None. P. Bhogal: None. W. Brinjikji: None. M. Mokin: None. A. Siddiqui: 1; C; Co-investigator for NIH – 1R01EB030092–01, Project Title: High Speed Angiography at 1000 frames per second; Mentor for Brain Aneurysm Foundation Carol W. Harvey Chair o...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Monteiro, A., Makalanda, L., Wareham, J., Jones, J., Dhillon, P., Bhogal, P., Brinjikji, W., Mokin, M., Siddiqui, A. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

P-031 End artery location of thrombus predicts poor neurological outcome despite successful thrombectomy for anterior circulation stroke
ConclusionsDespite similar vascular territories, concurrent occlusion of the MCA and ACA segments results in worse clinical outcomes compared to more proximal ICA occlusion. The likely explanation for fast progression of infarct in the MCA+ACA group is the higher likelihood of end-artery involvement and lower contribution of collateral flow. Reperfusion of both territories; however, does add to the risk of symptomatic post-procedural hemorrhage.Disclosures S. Eshraghi: None. S. Saperian: None. A. Alawieh: None. B. Howard: None. J. Grossberg: None. F. Tong: None. P. Jabbour: None. I. Maier: None. S. Wolfe: None. A. Rai: Non...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Eshraghi, S., Saperian, S., Alawieh, A., Howard, B., Grossberg, J., Tong, F., Jabbour, P., Maier, I., Wolfe, S., Rai, A., Starke, R., Gory, B., Psychogios, M., Shaaban, A., Arthur, A., Kim, J., Yoshimura, S., Kan, P., DeLeacy, R., Fragata, I., Polifka, A. Tags: SNIS 19th annual meeting oral poster abstracts Source Type: research

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