D. Pullmann, E. Almallouhi, S. Al kasab, A. Alawieh, R. Chalhoub, R. Starke, R. de Leacy, D. Raper, A. Rai, T. Dumont, S. Wolfe, P. Jabbour, C. Ogilvy, M. Park, M. Levitt, A. Polifka, R. Crowley, A. Arthur, J. Osbun, R. Crosa, I. Maier, J. Kim, W. Casagrande, A. Shaban, J. Grossberg, S. Chowdhry, M. Mokin, C. Matouk, Isabel Fragata, S. Webb, A. Yoo, J. Mascitelli, M. Psychogios, M. Azab, A. Spiotta
{"title":"E-006 Feasibility and safety of mechanical thrombectomy in stroke patients presenting with distal ACA occlusions – insights from star","authors":"D. Pullmann, E. Almallouhi, S. Al kasab, A. Alawieh, R. Chalhoub, R. Starke, R. de Leacy, D. Raper, A. Rai, T. Dumont, S. Wolfe, P. Jabbour, C. Ogilvy, M. Park, M. Levitt, A. Polifka, R. Crowley, A. Arthur, J. Osbun, R. Crosa, I. Maier, J. Kim, W. Casagrande, A. Shaban, J. Grossberg, S. Chowdhry, M. Mokin, C. Matouk, Isabel Fragata, S. Webb, A. Yoo, J. Mascitelli, M. Psychogios, M. Azab, A. Spiotta","doi":"10.1136/NEURINTSURG-2021-SNIS.102","DOIUrl":"https://doi.org/10.1136/NEURINTSURG-2021-SNIS.102","url":null,"abstract":"D Pullmann*, E Almallouhi, S Al Kasab, A Alawieh, R Chalhoub, R Starke, R De Leacy, D Raper, A Rai, T Dumont, S Wolfe, P Jabbour, C Ogilvy, M Park, M Levitt, A Polifka, R Crowley, A Arthur, J Osbun, R Crosa, I Maier, J Kim, W Casagrande, A Shaban, J Grossberg, S Chowdhry, M Mokin, C Matouk, I Fragata, S Webb, A Yoo, J Mascitelli, M Psychogios, M Azab, A Spiotta. Neurosurgery, Medical University of South Carolina, Charleston, SC; Neurology, Medical University of South Carolina, Charleston, SC; Neurosurgery, Emory University, Atlanta, GA; Neurosurgery, University of Miami Health System, Miami, FL; Neurosurgery, Mount Sinai Health System, New York, NY; Neurosurgery, Baylor College of Medicine, Houston, TX; Neurointerventional Radiology, West Virginia University, Morgantown, WV; Neurosurgery, University of Arizona, Tucson, AZ; Neurosurgery, Wake Forest Baptist Health, WinstonSalem, NC; Neurological Surgery, Thomas Jefferson University, Philadelphia, PA; Neurosurgery, Beth Israel Deaconess Medical Center, Boston, MA; Neurosurgery, University of Virginia Health System, Charlottesville, VA; Neurological Surgery, University of Washington, Seattle, WA; Neurosurgery, University of Florida, Gainesville, FL; Neurosurgery, Rush University, Chicago, IL; Neurosurgery, University of Tennessee Health Science Center, Memphis, TN; Neurosurgery, Washington University in St Louis, St. Louis, MO; Endovascular Neurosurgery, Médica Uruguaya, Montevideo, Uruguay; Neurology, Universitätsmedizin Göttingen, Göttingen, Germany; Neurology, Chonnam National University Hospital, Gwangju, Korea, Republic of; Neurosurgery, Sanatorio Güemes and Hospital de Agudos Juan A Fernandez, Buenos Aires, Argentina; Neurology, University of Iowa, Iowa City, IA; Neurosurgery, NorthShore University HealthSystem, Evanston, IL; Neurosurgery, University of South Florida, Tampa, FL; Neurosurgery, Yale School of Medicine, New Haven, CT; Neuroradiology, Centro Hospitalar Universitário de Lisboa Central, Lisbon, PORTUGAL; Neuroendovascular, Bon Secours, Greenville, SC; Neurointerventional Radiology, Texas Stroke Institute, Plano, TX; Neurosurgery, University of Texas Health Science Center at San Antonio, San Antonio, TX; Neuroradiology, Universitätsspital Basel, Basel, Switzerland; Neurosurgery, Damietta Specialized Hospital, Damietta Desert, Egypt","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124284207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Nguyen, G. Cortez, M. Baretta, A. Aghaebrahim, E. Sauvageau, R. Hanel
{"title":"E-051 Disparities in stroke: Associating socioeconomic factors with ischemic stroke outcome","authors":"A. Nguyen, G. Cortez, M. Baretta, A. Aghaebrahim, E. Sauvageau, R. Hanel","doi":"10.1136/neurintsurg-2021-snis.146","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.146","url":null,"abstract":"in the ATLAS IDE trial (Investigational Device Exemption) were identified. The primary efficacy end point was complete aneurysm occlusion (Raymond-Roy class 1) on 12-month angiography, in the absence of retreatment or parent artery stenosis (>50%) at the target location. The primary safety end point was any major stroke or ipsilateral stroke or neurological death within 12 months. Adjudication of the primary end points was performed by an independent Imaging Core Laboratory and the Clinical Events Committee. Result A total of 60 patients of were identified. The mean age was 59 and 28.3% were men. The median aneurysm size was 6.7mm with a median neck size of 4.3 mm. Aneurysm locations were as follows: basilar apex (56.7%), basilar trunk (3.3%), anterior communicating artery (20%), anterior cerebral artery (3.3%), internal cerebral artery (3.3%) and middle cerebral artery (13.3%). The composite primary efficacy end point of complete aneurysm occlusion (Raymond-Roy 1) without parent artery stenosis or aneurysm retreatment was achieved in 81.1% of patients. Overall, 1.7% (1/60) of patients experienced a primary safety end point of major ipsilateral stroke or neurological death. Conclusions In the ATLAS IDE aneurysm cohort premarket approval study, the Neuroform Atlas stent with adjunctive Ystent coiling met the primary end points and demonstrated high rates of long-term complete aneurysm occlusion at 12 months, with low rates of morbidity. Disclosures A. Jadhav: None. S. Desai: None. R. Hanel: None. D. Frei: None. A. Khaldi: None. S. Hetts: None. O. Zaidat: None. B. Jankowitz: None.","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125420276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Kühn, J. Singh, K. Rodrigues, F. Massari, M. Gounis, A. Puri
{"title":"E-123 Evaluation of safety and efficacy of transradial access for mechanical thrombectomy inacute ischemic stroke – A single center experience","authors":"A. Kühn, J. Singh, K. Rodrigues, F. Massari, M. Gounis, A. Puri","doi":"10.1136/neurintsurg-2021-snis.218","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.218","url":null,"abstract":"spectively maintained Neuro IR database and identified all patients who underwent transradial access for their diagnostic or interventional procedure between May 2019 and January 2021. Patient demographics, clinical information, procedural and radiographic data were collected. Results We identified 749 patients in whom transradial access was obtained for either diagnostic and interventional Neuro IR procedures. Access was obtained using a 5F/6F/7F radial sheath. In some procedures, the sheath was exchanged for the guide catheter which was then inserted in a bareback (sheathless) fashion. Interventional procedures performed included carotid artery stenting, stroke thrombectomy, intracranial stenting, thrombolysis for central retinal artery occlusion, aneurysm treatment (with coiling or stent-assisted coiling, flow diverters or Woven EndoBridge device placement), vasospasm treatment, arteriovenous malformation and dural arteriovenous fistula embolization, middle meningeal artery embolization, and spinal angiography with embolization. A total of 12 access site complications were recorded (1.6%) with 4 access site hematomas, 3 inflammatory changes at the puncture site, 2 asymptomatic radial artery occlusions, 2 radial artery injuries (1 self-limiting wire perforation and 1 perforation which was coiled via transfemoral route without any clinical sequela) and 1 retained broken microwire which was successfully removed in a subsequent session. None of the complications resulted in permanent local or neurological deficits. Conclusion The transradial approach for diagnostic and interventional Neuro IR procedures is a safe vascular access choice. Disclosures A. Kuhn: None. J. Singh: None. A. McGowan: None. M. Kirk: None. F. Massari: None. K. de Macedo Rodrigues: None. V. Naragum: None. V. Anagnostakou: 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; NIH, Stryker Neurovascular, Medtronic, Cerenovus. 2; C; Microvention, QApel, Perfuze Medical, Arsenal Medical, Merit Medical, Stryker Neurovascular, Medtronic, Cerenovus. 4; C; InNeuroCo Inc, Galaxy therapeutics, Agile Medical, Perfuze medical and NTI.","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122681024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Hendrix, M. Killer-Oberpfalzer, E. Broussalis, I. Melamed, S. Pikija, C. Hecker, O. Goren, R. Zand, C. Schirmer, E. Trinka, C. Griessenauer
{"title":"E-092 Mechanical thrombectomy for anterior versus posterior circulation large vessel occlusion stroke: A two-center outcome analysis","authors":"P. Hendrix, M. Killer-Oberpfalzer, E. Broussalis, I. Melamed, S. Pikija, C. Hecker, O. Goren, R. Zand, C. Schirmer, E. Trinka, C. Griessenauer","doi":"10.1136/neurintsurg-2021-snis.187","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.187","url":null,"abstract":"","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122493235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Snyder, A. Jadhav, E. Levy, A. Siddiqui, J. Davies, O. Zaidat, D. Yavagal, J. Saver, Rishi Gupta
{"title":"E-047 Tiger study: Tigertriever effectiveness is independent of the use of balloon guide catheter","authors":"K. Snyder, A. Jadhav, E. Levy, A. Siddiqui, J. Davies, O. Zaidat, D. Yavagal, J. Saver, Rishi Gupta","doi":"10.1136/neurintsurg-2021-snis.142","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.142","url":null,"abstract":"","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128307632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
I. Nakagawa, H. Park, M. Kotsugi, S. Yokoyama, T. Furuta, K. Nakase, A. Okamoto, S. Yamada, H. Nakase
{"title":"E-144 The presence of cerebral edema in addition to retrograde leptomeningeal venous drainage in cranial dural arteriovenous fistulas is an indicator of clinical severity","authors":"I. Nakagawa, H. Park, M. Kotsugi, S. Yokoyama, T. Furuta, K. Nakase, A. Okamoto, S. Yamada, H. Nakase","doi":"10.1136/neurintsurg-2021-snis.239","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.239","url":null,"abstract":"Flow diversion of intracranial aneurysms with the Pipeline embolization device is commonly performed, but the value of long-term angiographic follow-up has not been rigorously evaluated. Here, we examine the prevalence of actionable findings of aneurysm recurrence and develop-ment of in-stent stenosis in a cohort of patients that underwent long-term angiographic follow-up at multiple timepoints. later Pertinent findings of aneurysm occlusion of stenosis at final follow-up strati-fied based on findings on 6 month angiography. final","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Savastano, D. Gebrezgiabhier, J. Larco, S. Madhani, A. Shahid, Yang Liu
{"title":"E-015 Failure mechanisms of current thrombectomy devices identified in a human brain model: iatrogenic embolization, residual and recurrent large vessel occlusion, persistent perforating artery occlusion, and arterial collapse, traction and avulsion","authors":"L. Savastano, D. Gebrezgiabhier, J. Larco, S. Madhani, A. Shahid, Yang Liu","doi":"10.1136/neurintsurg-2021-snis.111","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.111","url":null,"abstract":"Introduction Complete recanalization in large vessel occlusion (LVO) strokes with suction catheters and stent retrievers has remained at 50% despite improved technologies and accumulating operator experience. About 40% of patients experience poor neurological outcomes and many cannot be recanalized at the first attempt. In this experimental study, we aimed to analyze the interaction between the arteries/emboli/devices in human brains and to provide mechanistic explanations of failures and complications of current interventions in a human brain LVO model. Method Elastic, fragment-prone and stiff embolus analogs were fabricated using a multilinear regression model derived from analysis of LVO emboli. Then, 105 LVO were generated in 12 fresh human brains pressurized by a pulsatile pump and recanalization attempted in 61 cases using aspiration thrombectomy (ACETM 68; Penumbra) and in 44 cases using stent/aspiration technique (SolitaireTM Platinum, Medtronic and ACETM 68, Penumbra). Results First pass complete (34%), successful (71%) and complete (60%) recanalization rates in this model were consistent with the literature. Devices loaded the emboli with tensile forces leading to elongation and intravascular fragmentation with downstream embolization to the microcirculation causing recurrent (15%) and residual (73%) occlusions, or both (12%). Moreover: a) residual emboli remained in small branching and perforating arteries in alleged complete recanalization (28%); b) vacuum caused arterial collapse at physiological pressures (43%); c) device withdrawal caused arterial traction (41%); and d) severe arterial traction provoked avulsion of perforating arteries. Conclusion Stents and suction catheters load emboli with tensile forces leading to fragmentation, embolization and residual occlusion and cause significant arterial deformation, collapse and traction. Disclosures L. Savastano: 4; C; Endovascular Engineering. D. Gebrezgiabhier: None. J. Arturo Larco: None. S. Madhani: None. A. Shahid: None. Y. Liu: 2; C; Endovascular Engineering.","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114662553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Leacy, A. Puri, R. Starke, B. Jankowitz, A. Yoo, G. Pero, C. Chivot, Tom L. Yao, O. Zaidat
{"title":"E-125 Impact of COVID related restrictions on clinical trials – Insights from the sterling registry","authors":"R. Leacy, A. Puri, R. Starke, B. Jankowitz, A. Yoo, G. Pero, C. Chivot, Tom L. Yao, O. Zaidat","doi":"10.1136/neurintsurg-2021-SNIS.220","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-SNIS.220","url":null,"abstract":"E-125 Table 1Post-COVID differences in actual vs. projected monthly enrollment rates by regionRegion Actual (mean ± SD) Projected(mean ± SD) Mean Diff. 95% CI US 5.92 ± 3.53 9.58 ± 0.51 3.67 1.53;5.80 EU 3.83 ± 2.04 5.83 ± 1.34 2.00 0.54;3.46 Japan 1.25 ± 1.60 2.17 ± 0.39 0.92 -0.07;1.90 Global 3.67 ± 1.61 5.86 ± 0.67 2.19 1.15;3.24 ConclusionThe Covid pandemic has the potential to dramatically alter how research is conducted worldwide. U.S. sites faced tougher restrictions than their EU and Japan counterparts. Particularly within the U.S., moratoriums on research and elective surgery may be the driving factor in reducing overall enrollment and increasing the percentage of ruptured aneurysm enrollment. Fortunately, these changes did not appear to negatively affect occlusion rates or adverse events.DisclosuresR. De Leacy: 6;C;Reports other and non-financial support from Penumbra;and non-financial support from Cerenovus and Siemens. A. Puri: 1;C;Has received research grants from Medtronic Neurovascular and Stryker Neurovascular.. 2;C;Serves as a consultant for Medtronic Neurovascular Stryker Neurovascular. R. Starke: 2;C;Serves as a consultant for for Medtronic Neurovascular, Penumbra, Cerenovus, and Abbott. B. Jankowitz: 2;C;Serves as a consultant for Medtronic and Stryker. A. Yoo: 1;C;Receives research grants from Medtronic, Cerenovus, Penumbra, Stryker, and Genentech. 2;C;Serves as a consultant for Cerenovus, Penumbra, and Zoll.. 4;C;Has equity interest in Insera Therapeutics.. G. Pero: None. C. Chivot: None. T. Yao: 2;C;Serves as a consultant/proctor for Medtronic. O. Zaidat: 2;C;Serves as a consultant for Neuravi, Stryker, Penumbra, and Medtronic.","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131316971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"E-146 The value of long-term angiographic follow-up following pipeline embolization of intracranial aneurysms","authors":"D. Lauzier, S. Cler, A. Kansagra","doi":"10.1136/neurintsurg-2021-snis.241","DOIUrl":"https://doi.org/10.1136/neurintsurg-2021-snis.241","url":null,"abstract":"","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121087735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Kuhn, Jasmeet Singh, F. Massari, K. de Macedo Rodrigues, V. Naragum, V. Anagnostakou, M. Gounis, A. Puri
{"title":"E-121 Evaluation of safety and efficacy of snuffbox (Distal Radial Artery) access for mechanical thrombectomy in acute ischemic stroke","authors":"A. Kuhn, Jasmeet Singh, F. Massari, K. de Macedo Rodrigues, V. Naragum, V. Anagnostakou, M. Gounis, A. Puri","doi":"10.1136/NEURINTSURG-2021-SNIS.216","DOIUrl":"https://doi.org/10.1136/NEURINTSURG-2021-SNIS.216","url":null,"abstract":"tively maintained Neuro IR database and identification of all patients who underwent mechanical thrombectomy for anterior circulation strokes between January 2019 and November 2020. First pass efficacy was defined as successful single-pass mechanical thrombectomy resulting in mTICI score equal or greater than 2B. Information on number of passes needed to achieve TICI 2B or greater as well as total number of passes and final revascularization score were recorded. Results The Walrus BGC (Q’apel Medical) is a revolutionary 0.087-inch inner diameter and 0.110-inch outer diameter device specifically designed for stroke patients. Its design offers distal flexibility, great trackability and optimal proximal support. A total of 239 anterior circulation stroke cases were identified between January 2019 and November 2020. Of those, 80 cases were performed using the Walrus BGC. First pass mTICI score equal or greater than 2B was achieved in 45/80 cases (56.3%) using the Walrus BGC with 39 of those cases (86.7%) achieving mTICI 2C or 3. An mTICI score equal or greater than 2B was achieved in 77/159 cases (48.4%) using other guide catheters including the Flowgate BGC (Stryker), Cello BGC (Medtronic), Merci BGC (Stryker), Neuron Max (Penumbra) and Infinity (Stryker) with 59 of those cases (76.6%) achieving mTICI 2C or 3. mTICI 2B was not achieved in 35 cases (43.7%) in the Walrus BGC group versus 82 cases (51.6%) in the other guide catheter group. The higher first pass and final recanalization scores maybe explained by the ability to put larger ID intermediate catheters for either aspiration alone or with stent retrievers in conjunction with the Walrus BGC. Conclusion The Walrus BGC achieved more first pass mTICI scores equal or greater than 2B when compared to other guide catheters for anterior circulation mechanical thrombectomy and among those cases also achieved more mTICI 2C and 3 recanalizations. Disclosures A. Kuhn: None. V. Naragum: None. J. Singh: None. K. de Macedo Rodrigues: None. F. Massari: None. V. Anagnostakou: 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; NIH, Stryker Neurovascular, Medtronic, Cerenovus. 2; C; Microvention, QApel, Perfuze Medical, Arsenal Medical, Merit Medical, Stryker Neurovascular, Medtronic, Cerenovus. 4; C; InNeuroCo Inc, Galaxy therapeutics, Agile Medical, Perfuze medical and NTI.","PeriodicalId":239958,"journal":{"name":"Electronic poster abstracts","volume":"209 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115505483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}