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P-031 Effect of COVID-19 on acute ischemic stroke: population-level experience
ConclusionIn this population-level study, significant decreases in AIS volume were observed with slightly higher incidence in younger population and higher LVO strokes. Rates of thrombolysis and thrombectomy remained unchanged but patients appeared to have worse outcomes.Disclosures Y. Kim: None. S. Khose: None. S. Salazar-Marioni: None. R. Abdelkhaleq: None. S. Sheth: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Kim, Y., Khose, S., Salazar-Marioni, S., Abdelkhaleq, R., Sheth, S. Tags: Oral poster abstracts Source Type: research

P-043 Elevated D-dimer levels predicts mortality in COVID-19 with stroke: analysis of multi-center electronic health record data
ConclusionsPeak D-dimer levels above 5.15 µg/ml feu are associated with increased mortality in COVID-19 patients with AIS.Disclosures Y. Kim: None. S. Khose: None. R. Abdelkhaleq: None. S. Salazar-Marioni: None. S. Sheth: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Kim, Y., Khose, S., Abdelkhaleq, R., Salazar-Marioni, S., Sheth, S. Tags: Oral poster abstracts Source Type: research

E-010 Strict aspects cutoffs in endovascular therapy selection paradigms may harm patient outcomes
ConclusionASPECT scores at presentation in patients with LVO were associated with 90-day disability outcomes in a continuous fashion. In patients with ASPECTS close to 5, EST continued to provide significant treatment effect. These findings argue against the use of strict ASPECTS cutoffs for EST eligibility.Disclosures R. Abdelkhaleq: None. C. De la Garza: None. Y. Kim: None. S. Khose: None. S. Salazar Marioni: None. S. Sheth: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Abdelkhaleq, R., De la Garza, C., Kim, Y., Khose, S., Salazar Marioni, S., Sheth, S. Tags: Electronic poster abstracts Source Type: research

E-021 Pathophysiology, stroke types, collateral formation and aneurysms in moyamoya disease/moya moya syndrome
ConclusionsMMD is presented most commonly with ischemic stroke in the pediatric age group and with hemorrhagic stroke in the adult age group. MMD-associated intracranial aneurysms frequently occur in patients presenting with hemorrhagic unilateral MMD and are associated with an extremely high rate of rupture. Long-standing hemodynamic stress might contribute to the formation of an aneurysm.Disclosures S. Ahmad: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Ahmad, S. Tags: Electronic poster abstracts Source Type: research

E-044 Stenting of intracranial stenosis through an angioplasty balloon catheter - A case series
ConclusionDeploying self-expanding stents through an angioplasty balloon catheter is feasible, safe, and can greatly simplify the procedure. The Neuroform Atlas stent is strong enough to prevent immediate recoil of intracranial stenosis after angioplasty.Disclosures A. Takayanagi: None. J. Fields: None. K. Chao: None. D. Rex: None. P. Cheng: None. L. Feng: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Takayanagi, A., Fields, J., Chao, K., Rex, D., Cheng, P., Feng, L. Tags: Electronic poster abstracts Source Type: research

O-024 Core lab assessed real-life experience with the?embotrap thrombectomy device in the first?166 patients
The Karolinska University Hospital is performing intra-arterial stroke treatment since 2006. We analyzed the radiological and clinical outcome of the first 166 patients that were treated using the Embotrap device. The patient group included all strokes, including those in the posterior fossa, as well as patients in all age groups. Since the operators were both experienced and inexperienced operators (supervised fellows), we consider this the ‘real-life situation’. All clinical outcome measures were assessed by independent observers and a core-lab assessed the radiological outcome. Disclosures P. Brouwer: 2; C;...
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Brouwer, P. Tags: Oral Abstracts Source Type: research

P-004 30 day results of revascularization of extracranial carotid artery stenosis (recas) trial in mainland china
This study is registered, number NCT01994187. Results The trial enrolled 2762 patients (CAS group, n=1543; CEA group, n=1176; CEA+CAS group, n=43). The primary end point was achieved in 4.47% (69/1543) in patients treated with carotid artery stents, and 4.93% (58/1176) in patients treated with carotid endarterectomy, an absolute difference of 0.46%. Risks of any stroke (3.50% vs 3.32%) was higher in the stenting group than in the endarterectomy group, but the risks of any death (0.39% vs 0.51%) was lower in the stenting group than in the endarterectomy group. Nine procedural myocardial infarctions were recorded in the st...
Source: Journal of NeuroInterventional Surgery - July 23, 2017 Category: Neurosurgery Authors: Bin, Y., Yanfei, C., Yabing, W., Peng, G., Yan, M., Liqun, J. Tags: Oral Poster Abstracts Source Type: research

Practice makes perfect: establishing reasonable minimum thrombectomy volume requirements for stroke centers
Introduction Recently, seven randomized controlled trials were published showing benefit to neurothrombectomy (NT) in the setting of anterior circulation emergent large vessel occlusion (ELVO).1–7 Accordingly, the American Heart Association/American Stroke Association has updated societal guidelines and provided a class 1, level of evidence A recommendation that NT be performed in patients with an ELVO who meet appropriate criteria.8 Subsequently, a recent national survey of neurointerventional physicians has suggested increasing procedural volumes, with many reporting increasing indications for patient selection sin...
Source: Journal of NeuroInterventional Surgery - July 12, 2017 Category: Neurosurgery Authors: Fargen, K. M., Fiorella, D. J., Mocco, J. Tags: Editor ' s column Source Type: research

Congenital anomaly of the posterior arch of the atlas: a rare risk factor for posterior circulation stroke
We report an extremely rare case involving a posterior arch anomaly of the atlas, causing a vertebral artery dissection (VAD) induced posterior circulation stroke. A 16-year-old girl was admitted to hospital because of new onset dizziness. VAD related multiple infarction in the posterior circulation was revealed. The congenital posterior arch anomaly of the atlas, along with instability of the atlantoaxial joint, were discovered accidentally during follow-up. This is the first case of ischemic stroke related to atlantal posterior arch aplasia and atlantoaxial instability. Although rare, it reminds us that investigation of ...
Source: Journal of NeuroInterventional Surgery - June 16, 2017 Category: Neurosurgery Authors: Ouyang, Z.-y., Qiu, M.-j., Zhao, Z., Wu, X.-b., Tong, L.-s. Tags: Neuroimaging Source Type: research

The mission lifeline severity-based stroke treatment algorithm: We need more time
On March 10th, 2017 the American Heart Association presented their Mission Lifeline Severity-Based Stroke Treatment Algorithm For EMS. This document consisted of single page algorithm written to provide guidance to EMS providers regarding the triage and transport of suspected stroke patients, as well as a single explanatory page (https://www.heart.org/HEARTORG/Professional/MissionLifelineHomePage/MissionLifeline-Stroke_UCM_491623_SubHomePage.jsp). Specifically, patients with suspected emergent large vessel occlusion (ELVO) (based on pre-hospital stroke assessment), who were last know well within 6 hours, are to be consider...
Source: Journal of NeuroInterventional Surgery - April 13, 2017 Category: Neurosurgery Authors: Mocco, J., Fiorella, D., Albuquerque, F. C. Tags: Editors ' column Source Type: research

Incremental progress
This edition of the Journal of Neurointerventional Surgery (JNIS) highlights, among other topics, the controversial issue of access to stroke care. The publication in 2015 of the positive, randomised trials has opened a Pandora's Box of sorts. The application of mechanical thrombectomy (MT) techniques, to which patients and under what circumstances, is monumentally important in maintaining public support in general and hospital support locally for these treatments. Broad application of MT, while theoretically attractive from a public health perspective, may actually hinder our societal efforts in validating the efficacy of...
Source: Journal of NeuroInterventional Surgery - February 13, 2017 Category: Neurosurgery Authors: Albuquerque, F. C. Tags: Editor ' s column Source Type: research

E-057 Process Improvement in Door-to-Groin Puncture Times at a Comprehensive Stroke Center Shows a Trend Towards Reduced Mortality at 90 Days
ConclusionOur systematic process improvement initiative significantly reduced door-to-groin puncture times and showed a trend towards reduced mortality at 90 days. A multidisciplinary approach and ensuring hospital system investment are key to an effective process.DisclosuresY. Kayan: 2; C; Medtronic, Penumbra. J. Delgado Almandoz: 2; C; Medtronic, Penumbra. M. Young: None. J. Fease: None. J. Scholz: None. A. Milner: None. T. Hehr: None. M. Mulder: None. P. Roohani: None. R. Tarrel: None.
Source: Journal of NeuroInterventional Surgery - July 28, 2016 Category: Neurosurgery Authors: Kayan, Y., Delgado Almandoz, J., Young, M., Fease, J., Scholz, J., Milner, A., Hehr, T., Mulder, M., Roohani, P., Tarrel, R. Tags: Electronic poster abstracts Source Type: research

E-058 Pilot Study: Feasibility of the Use of Ventura Emergency Large Vessel Occlusion Scale to Identify Large Vessel Occlusion Stroke
ObjectivesTo evaluate the feasibility and reliability of a self-designed Ventura Emergency Large Vessel Occlusion (ELVO) Scale performed by Emergency Medical Services (EMS). To identify, if field identification of ELVO, reduces door to groin time.BackgroundEndovascular treatment of stroke is now the standard of care for large vessel occlusion (LVO) stroke within 6 hours of onset. The outcomes of intra-arterial (IA) endovascular treatment are time dependent. The time from arrival to groin vary during the day time versus after hours or infield transfers compared to hospital to hospital transfers. Pre-identification of LVO fr...
Source: Journal of NeuroInterventional Surgery - July 28, 2016 Category: Neurosurgery Authors: Taqi, M., Quadri, S., Suriya, S. Tags: Electronic poster abstracts Source Type: research

O-024 Systems of Care Efficiency and Interhospital Transfer Delays in the STRATIS Registry
ConclusionTime to revascularization is much slower for patients requiring interhospital transfer. The delay is accounted for by the time between imaging and departure, which is when treatment decisions and transfer arrangements are made, and should be a target for improvement.An important consideration for many regional systems is whether certain stroke patients should bypass the nearest hospital to go directly to an endovascular center. We created a conservative model of such a scenario, which suggests that successful revascularization would be achieved 99 minutes earlier by bypass. This may have significant implications ...
Source: Journal of NeuroInterventional Surgery - July 28, 2016 Category: Neurosurgery Authors: Froehler, M., Aziz-Sultan, M., Jahan, R., Klucznik, R., Saver, J., Zaidat, O., Yavagal, D., Mueller-Kronast, N. Tags: Oral abstracts Source Type: research

P-012 Longer Working Length of the Solitaire Retrieval Device Improves Revascularization
ConclusionsThe Solitaire 4 x 40 device showed a statistical trend for achieving better recanalization compared to the shorter devices. However due to our small sample size of patients undergoing treatment with the 4 x 40, further investigation is warranted to determine whether this result is maintained in larger sample size such as the STRATUS registry.DisclosuresW. Holloway: None. I. Akhtar: None. J. Halpin: None. C. Martin: None. N. Akhtar: None.
Source: Journal of NeuroInterventional Surgery - July 28, 2016 Category: Neurosurgery Authors: Holloway, W., Akhtar, I., Halpin, J., Martin, C., Akhtar, N. Tags: Oral poster abstracts Source Type: research

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