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P008/85 Transarterial embolization (including hypoglossal artery) of dural arteriovenous fistula with multiple venous varices: Case report
ConclusionDAVF with venous varix is defined as high risk for venous hypertension or hemorrhage. There is a possibility of lower CN injury during embolization for hypoglossal artery, so accurate knowledge of anatomical structures is essential. Transarterial embolization for DAVF with large venous varix is a safe and considerable treatment option, even when fed by hypoglossal artery.Disclosure of InterestNothing to disclose
Source: Journal of NeuroInterventional Surgery - August 21, 2023 Category: Neurosurgery Authors: Lee, J., Yang, J.-C., Hong, C. E., Han, M. H. Tags: 4.3 CASE PROPOSAL - Acute ischemic stroke Source Type: research

E-110 Bilateral hypoplasia of the internal carotid artery (ICA) and intracranial vasculopathy with 'moyamoya phenomenon in association with alagille syndrome
ConclusionThe educational value of our case lies not only in the rarity of the condition but also in the uniqueness of patient presentation. It would be a helpful addition to the existing literature on rare genetic syndromes with cerebral vasculature involvement.Abstract E-110 Figure 1Disclosures H. Shakeel: None. J. Gandhi: None. R. Singh: None. A. Graziano: None. R. Cerejo: None.
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Shakeel, H., Gandhi, J., Singh, R., Graziano, A., Cerejo, R. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

E-151 Efficacy of an incidental aneurysm alert system (IAAS) and the associated disparities of incidentally detected intracranial aneurysms
ConclusionsIAAS is an effective alerting system and can improve the management of incidentally discovered cerebral aneurysms. The natural history of cerebral aneurysms may differ for Hispanic andAsian Americans, suggesting a potentially higher risk at presentation. Future research is needed to better understand these disparities’ causes and reduce their risks.Disclosures K. Fukuda: None. Y. Ghochani: None. D. Enzmann: None. C. Arnold: None. X. Chen: None. J. Morales: None. D. Kimball: None. C. Beaman: None. G. Duckwiler: None. R. Jahan: None. S. Tateshima: None. V. Szeder: None. N. Kaneko: None. M. Nour: None.
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Fukuda, K., Ghochani, Y., Enzmann, D., Arnold, C., Chen, X., Morales, J., Kimball, D., Beaman, C., Duckwiler, G., Jahan, R., Tateshima, S., Szeder, V., Kaneko, N., Nour, M. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

O-035 Endovascular treatment of cerebral venous thrombosis involving the deep venous system
ConclusionsAlthough deep venous involvement of CVT is uncommon, these patients are at risk of quickly becoming critically ill with an elevated rate of death or dependency. Although these patients may develop stroke, hemorrhage, or neurologic decline prompting consideration of endovascular therapy, the deep cerebral venous system is not easily accessible with catheters due to small lumens and risk of perforation. It has been proposed that deep cerebral veins may have a higher chance of recanalization if venous thrombus burden is reduced in other parts of the dural venous sinuses. Current literature has not fully explored th...
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Morel, B., Hoffman, J., Folzenlogen, Z., Roark, C., Seinfeld, J., Case, D. Tags: SNIS 20th annual meeting oral abstracts Source Type: research

E-020 Flow diversion for intracranial aneurysms: intracranial hemorrhage and thromboembolic complications in a multi-center cohort of 200 patients
ConclusionComplication rates in our study are comparable to previous reports, and our findings further support the general safety and efficacy of flow diversion. Despite a relatively large population, the low number of ICH and TE complications limit statistical significance. Further study of complications in more robust samples are needed. However, the descriptive understanding of these complications can help direction future investigations.Abstract E-020 Table 1ICH and TE Stratifications ICH Non-ICH p n=7 n=193 Hypertension 7 (100%) 97 (50.3%) 0.035 Currently Smoking 3 (42.9%) 28 (14.5%) 0.319 Mean Procedural Fluoroscopi...
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: Meister, R., Lesko, A., Marginean, H., Deshmukh, V. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

E-025 The rate and predictors of 30-day readmission in patients treated for cerebral aneurysms: a large single-center study
ConclusionIn our study, risk factors for 30-day readmission were increasing BMI, cancer, increasing aneurysm width, and anticoagulation use. Future studies should focus on aneurysm dimensions and the use of blood thinners as the literature pertaining these predictors is still scarce.Abstract E-025 Table 1 Variables N(%) 30-day Readmission 36 (6.6) Cause of Readmission: Infection Stroke Re-Rupture Wound Dehiscence Seizures CSF Leak Hydrocephalus Headache Wound Area Swelling Groin Hematoma Pseudo meningocele 9 (25)11 (30.6)1 (2.8)1 (2.8)1 (2.8)1 (2.8)1 (2.8)7 (19.4)2 (5.6)1 (2.8)1 (2.8) Causes and Rate of ReadmissionAbstrac...
Source: Journal of NeuroInterventional Surgery - July 30, 2023 Category: Neurosurgery Authors: El Naamani, K., Hunt, A., Jain, P., Lawall, C., Yudkoff, C., El Fadel, O., Ghanem, M., Momin, A., Atallah, E., Abbas, R., Zakar, R., Tjoumakaris, S., Gooch, M., Herial, N., Zarzour, H., Schmidt, R., Rosenwasser, R., Jabbour, P. Tags: SNIS 20th annual meeting electronic poster abstracts Source Type: research

Pharyngo-tympano-stapedial middle meningeal artery variant supply to a falcotentorial dural arteriovenous fistula
We report the case of a middle-aged patient with severe, daily headache who presented to our institution for angiography and treatment. CT angiography and MRI demonstrated an enlarged left middle meningeal artery coursing to a large venous varix in the falcotentorial region. Dural arteriovenous fistula was confirmed by subsequent cerebral angiography. Endovascular treatment was performed but without complete obliteration of the fistula. Follow-up angiography demonstrated parasitized arterial supply from a right middle meningeal artery arising from the proximal cervical internal carotid artery coursing through the middle ea...
Source: Journal of NeuroInterventional Surgery - November 14, 2022 Category: Neurosurgery Authors: Baker, A., Raygor, K., Caton, M. T., Narsinh, K. H., Smith, E., Dowd, C. F., Cooke, D. L., Higashida, R. T., Amans, M. R., Abla, A. A., Hetts, S. W. Tags: Hemorrhagic stroke Source Type: research

E-060 Analysis of reported adverse events of flow-diverter stents for intracranial aneurysms using the FDA MAUDE database
ConclusionsPost-market surveillance is an important to guide patient counselling and identify adverse events and device problems that were not identified in initial trials. Although there are inherent limitations to the MAUDE database, our results highlight some important PR and DR complications that can help optimize patient counseling and management.Disclosures M. Porwal: None. G. SenthilKumar: None. D. Kumar: None. G. Sinson: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Porwal, M., SenthilKumar, G., Kumar, D., Sinson, G. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

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-132 A retrospective analysis of stroke code specificity in predicting acute ischemic events
ConclusionsThis retrospective analysis of stroke codes at MGUH during a 6-month period was 29% specific in predicting AIS. This is significantly lower than what was found in previous studies. Of stroke mimics, TME was the major etiology encompassing 43.6% of cases. The results of our study suggest additional stroke education may be needed for non-neurologists and ancillary staff to appropriately recognize stroke symptoms to better improve the utilization of hospital resources and provide appropriate and efficient care.Disclosures A. Mehta: None. J. Isaacson: None. N. Lightfoot: None. T. Kitani: None. F. Khan: None. T. Hash...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Mehta, A., Isaacson, J., Lightfoot, N., Kitani, T., Khan, F., Hashemzadeh, T., Dawson, K., Mayson, D., Stemer, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

E-248 Postpartum vertebral artery dissections: a report of 7 cases and literature review
ConclusionA limited cohort of 33 ppVADs exist in the literature. This study contributes 7 additional cases and suggests that, despite heterogenous management of ppVAD, the resulting outcomes were favorable.Disclosures V. Lazarov: None. A. Monteiro: None. F. Almayman: None. M. Waqas: None. J. Cappuzzo: None. E. Levy: None. A. Siddiqui: None.
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Lazarov, V., Monteiro, A., Almayman, F., Waqas, M., Cappuzzo, J., Levy, E., Siddiqui, A. Tags: SNIS 19th annual meeting electronic poster abstracts Source Type: research

Cerebral hyperperfusion syndrome after mechanical thrombectomy
Case summary A male patient in his late 50s who had untreated atrial fibrillation received mechanical thrombectomy for right middle cerebral artery occlusion (MCA), with complete recanalization. After initial neurological improvement, he developed headache and altered vigilance 2 days post-thrombectomy. Transcranial duplex sonography (TCD) showed increased blood flow velocities in the entire ipsilateral (recanalized) MCA-M1 segment.1 2 Brain MRI with angiography excluded focal stenosis and showed vasogenic edema, hemorrhagic transformation of the ischemic infarct, and cerebral hyperperfusion in the right MCA territory (fig...
Source: Journal of NeuroInterventional Surgery - November 18, 2021 Category: Neurosurgery Authors: Kneihsl, M., Enzinger, C., Gattringer, T. Tags: Ischemic stroke Source Type: research

P-039 Flow diverters for treatment of ICA loop dissections or ICA dissections with associated pseudoaneurysm
ConclusionUse of flow diverters, in some cases in conjunction with (carotid) stents, is an effective treatment option for cervical carotid artery dissections, especially loop dissections with or without associated pseudo aneurysms.Disclosures J. Singh: None. A. Kuhn: None. K. de Macedo Rodrigues: None. F. Massari: 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, Mic. 2; C; Cerenovus, Imperative Care, phenox, Medtronic Neurovascular, Route 92 Medical, ...
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Singh, J., Kuhn, A., de Macedo Rodrigues, K., Massari, F., Gounis, M., Puri, A. Tags: Oral poster abstracts Source Type: research

P-048 Safety and performance of the penumbra smart coil system for patients with posterior aneurysms
ConclusionThis subset analysis suggests that the SMART COIL System achieves adequate embolization in posterior circulation aneurysms with low retreatment rates over one year.Disclosures A. Spiotta: 1; C; Stryker, Penumbra, Medtronic. 2; C; Stryker, Penumbra, Terumo. C. Schirmer: None. B. Bohnstedt: None. R. Bellon: None. H. Hawk: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Spiotta, A., Schirmer, C., Bohnstedt, B., Bellon, R., Hawk, H. Tags: Oral 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

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