A new study published in Neurology Open Access reveals that in-hospital seizure rates following mechanical thrombectomy for acute ischemic stroke have risen significantly from 2016 to 2022. Analyzing 632,485 patients from the National Inpatient Sample, researchers found overall seizure rates increased from 1.60% to 2.34% over this period, with both status epilepticus and nonstatus seizures showing upward trends. Mechanical thrombectomy, a cornerstone treatment for large vessel occlusion strokes endorsed by the American Heart Association/American Stroke Association in 2015, treats patients with severe strokes involving extensive vascular territories and cortical involvement—established seizure risk factors. The study identified specific anatomical risk factors, including intracranial artery, internal carotid artery, and vertebral artery thrombectomies. Patients experiencing status epilepticus faced substantially longer hospitalizations, higher costs, and greater mortality compared to those without seizures. These findings highlight the clinical significance of seizure management in mechanical thrombectomy patients, as several identified risk factors appear potentially modifiable through early metabolic and medical optimization strategies.

Researchers conducted a comprehensive meta-analysis comparing three treatment modalities for posterior communicating artery (PCOM) aneurysms: microsurgical clipping, endovascular coiling, and flow diverter placement. Published in September 2026 in The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, this open-access study systematically evaluated the efficacy and safety outcomes of these interventional approaches. PCOM aneurysms represent a significant clinical challenge, accounting for a substantial portion of cerebral aneurysms requiring treatment. The meta-analysis examined key performance metrics across all three techniques to determine their comparative effectiveness. This research matters because identifying the optimal treatment strategy for PCOM aneurysms can substantially improve patient outcomes, reduce complications, and guide clinical decision-making. By providing evidence-based comparisons of microsurgical clipping, endovascular coiling, and flow diverter technology, the findings offer valuable guidance for neurosurgeons and interventional neuroradiologists in selecting appropriate treatment protocols tailored to individual patient characteristics and anatomical considerations.

# Summary Researchers developed an integrated computational and experimental framework to assess endovascular flow diversion strategies for treating cerebral aneurysms. The study combines hemodynamic and structural analyses using multi-fidelity approaches, integrating advanced computational modeling with laboratory validation. Flow diversion devices work by redirecting blood flow away from aneurysms, promoting thrombosis and vessel healing. The multi-fidelity assessment methodology allows researchers to evaluate device performance across different complexity levels, improving prediction accuracy while optimizing computational efficiency. By correlating computational simulations with experimental data, the framework provides comprehensive insights into how various flow diversion strategies affect both blood flow patterns and structural vessel responses. This integrated approach is significant because it addresses the critical need for more accurate preoperative planning in aneurysm treatment, potentially reducing complications and improving patient outcomes. The methodology advances personalized medicine in neurointerventional radiology by enabling better-informed device selection and deployment strategies tailored to individual patient anatomies and aneurysm characteristics.

This study evaluates patient-specific hemodynamic and angiographic outcomes following flow-diverting device deployment for intracranial aneurysm treatment. Researchers developed a computational framework combining patient-specific vascular reconstruction with virtual device deployment and computational fluid dynamics modeling to predict treatment outcomes. The methodology involved three diverse clinical cases: a small sidewall saccular aneurysm, a dissecting or locally dilated vertebral artery lesion, and a giant aneurysm. The study analyzed hemodynamic changes induced by the flow-diverting device, comparing predicted computational results with actual clinical angiographic findings at immediate post-procedural assessment and twelve-month follow-up imaging. This patient-specific modeling approach demonstrates significant clinical value by enabling personalized treatment planning and predicting aneurysm response to flow diversion before intervention. The correlation between computational predictions and real-world angiographic outcomes validates the utility of this technique in optimizing endovascular strategy selection and improving patient outcomes in complex aneurysm management.

Recent research examines optimal endovascular treatment strategies for acute ischemic stroke caused by large-vessel occlusion. A meta-analysis by Bischof, Jackwerth, and Bergmann investigates whether bridging therapy combining intravenous thrombolysis with endovascular thrombectomy provides added benefit over thrombectomy alone, despite continued guideline recommendations for this combined approach. Complementary studies explore patient selection criteria, including NIHSS mismatch as a predictor of early neurological improvement following mechanical thrombectomy, and clustering analysis to identify acute ischemic stroke subtypes based on clinical and thrombus imaging characteristics. Research by Kim, Salazar-Marioni, and Sheth compares thrombectomy alone versus bridging thrombolysis specifically in US populations, while proteomic biomarker studies aim to extend treatment eligibility windows beyond the current 4.5-hour guideline for intravenous thrombolysis. These investigations collectively address critical gaps in stroke management protocols, potentially refining patient selection and treatment timing to improve neurological outcomes and optimize resource allocation in acute stroke care.

Researchers have developed an integrated computational and experimental framework for assessing hemodynamic-structural effects of endovascular flow diversion strategies in cerebral aneurysm treatment. This multi-fidelity approach combines advanced modeling techniques with laboratory validation to evaluate how flow-diverting devices alter blood flow dynamics and structural mechanics within aneurysms. The study addresses a critical clinical need by providing comprehensive analysis of device performance across multiple parameters simultaneously, rather than examining hemodynamic or structural aspects in isolation. By integrating computational simulations with experimental testing, the research enables more accurate prediction of clinical outcomes and device efficacy. This methodology allows clinicians and engineers to optimize flow diversion strategies before implementation, potentially improving patient safety and treatment success rates. The framework represents a significant advancement in precision medicine for cerebral aneurysm management, offering a systematic approach to device evaluation that bridges the gap between theoretical modeling and real-world clinical application, ultimately supporting better-informed treatment decisions for this serious cardiovascular condition.

Researchers have developed an integrated computational and experimental framework to evaluate endovascular flow diversion strategies for treating cerebral aneurysms. The study combines hemodynamic modeling with structural analysis to assess multiple treatment approaches across different fidelity levels, enabling more comprehensive evaluation of flow diverter device performance. By merging computational fluid dynamics simulations with experimental validation, the team created a multi-fidelity assessment methodology that captures both the fluid dynamics within aneurysms and the structural interactions of implanted devices. This approach allows for systematic comparison of various flow diversion strategies before clinical application. The framework addresses a critical gap in aneurysm treatment research by providing detailed hemodynamic and structural insights that single-method approaches cannot achieve. This integrated methodology is significant for advancing endovascular treatment protocols, optimizing device design, and potentially improving patient outcomes by identifying the most effective flow diversion strategies. The research supports evidence-based selection of treatment approaches tailored to specific aneurysm characteristics, ultimately enhancing the safety and efficacy of cerebral aneurysm management.

# Summary This case report documents the successful recovery of oculomotor nerve palsy following endovascular treatment of a complex basilar artery–superior cerebellar artery junction aneurysm using the Woven EndoBridge (WEB) device. The patient presented with symptoms related to nerve compression from the aneurysm at this critical neurovascular junction. The WEB device, a specialized intrasaccular flow disruptor, was deployed to treat the symptomatic aneurysm while preserving vessel patency. Following the procedure, the patient experienced progressive neurological improvement, with complete resolution of oculomotor nerve dysfunction. This case illustrates an important clinical outcome demonstrating that the WEB technique can effectively treat complex aneurysms at challenging locations while potentially reversing associated neurological deficits. The recovery of cranial nerve function post-intervention highlights the device's capability to relieve mass effect and compression, offering patients improved functional outcomes beyond traditional aneurysm obliteration alone.

# Summary This open-access clinical research article, published in BMC Neurology in October 2026, evaluates the effectiveness and safety of endovascular stent-assisted coil embolization for treating cerebral aneurysms. The study presents 12-month clinical outcomes following this minimally invasive intervention, which combines stent placement with coil embolization to achieve durable aneurysm occlusion while preserving parent vessel patency. The research contributes important data on this increasingly prevalent treatment approach, which offers advantages over traditional open surgical clipping, particularly for complex aneurysm morphologies. By documenting patient outcomes over an extended follow-up period, the study provides evidence regarding complication rates, aneurysm recurrence, and functional recovery. These findings are significant for neurovascular specialists and interventional radiologists selecting treatment strategies for aneurysm patients, helping establish best practices for stent-assisted coiling techniques and informing clinical decision-making in aneurysm management protocols.

Endovascular thrombectomy has revolutionized acute ischemic stroke treatment, yet approximately twenty percent of procedures encounter refractory vessel occlusions requiring alternative management strategies. When mechanical retrieval fails, clinicians must decide whether to abandon intervention or pursue salvage techniques, with intracranial rescue stenting emerging as a critical bailout option. Historically, concerns about hemorrhagic transformation and acute in-stent thrombosis limited adoption of this approach. The German Stroke Registry-Endovascular Treatment provided landmark real-world evidence by analyzing over fourteen thousand middle cerebral artery occlusion patients. Among these, rescue stenting was deployed in only 2.4 percent of cases, reflecting its selective use. Researchers conducted rigorous propensity score matching comparing 218 stented patients with 218 non-stented controls who had failed reperfusion, accounting for baseline neurological severity, age, and vascular anatomy. Results demonstrated that patients receiving intracranial rescue stenting achieved significantly improved functional outcomes at ninety days. This data provides crucial guidance for interventional teams facing the difficult decision of persistent vessel occlusion versus aggressive salvage maneuvers, suggesting rescue stenting offers meaningful clinical benefit in carefully selected failed thrombectomy cases.

This case study describes the successful treatment of a patient with a rare anatomical variant presenting with tandem occlusion affecting both the internal carotid artery and middle cerebral artery. The patient possessed a persistent hypoglossal artery, an uncommon embryological remnant that creates additional complexity in cerebrovascular interventions. Mechanical thrombectomy was performed to restore blood flow and prevent stroke progression. The procedure navigated the challenging anatomy while successfully removing the thrombus from both vessel segments. This case is clinically significant because it demonstrates the importance of recognizing anatomical variants during acute stroke management and highlights how interventional radiologists must adapt standard thrombectomy techniques to accommodate unusual vascular anatomy. The successful outcome illustrates that mechanical thrombectomy remains an effective treatment option even in patients with anatomical complications, provided clinicians carefully evaluate imaging and adjust their approach accordingly. Such cases contribute valuable insights to the stroke intervention literature and inform best practices for managing similar presentations.

Endovascular implants treat intracranial aneurysms by altering mechanical and hemodynamic conditions at the aneurysm neck to prevent rupture. This comprehensive review examines braided flow diverters, intrasaccular devices, and emerging flow-disruption concepts, analyzing deployment mechanics, wire interactions, superelasticity, wall apposition, pore geometry, and computational fluid dynamics through fluid-structure interaction modeling. The authors emphasize that computational model fidelity should align with clinical objectives: simplified prescribed geometries suit screening applications, while mechanically accurate deployment states better address coverage, apposition, migration, and durability concerns. The review connects modeling choices to clinically relevant outcomes and distinguishes established evidence from mechanistic hypotheses. Given that intracranial aneurysms affect approximately three percent of adults and rupture causes subarachnoid hemorrhage with high morbidity and mortality, effective treatment planning is critical. The authors advocate for an interface-resolved mechanics-to-flow framework supported by measurable validation targets and standardized reporting protocols to improve device design and enable more reliable patient-specific treatment strategies. This comprehensive mechanistic analysis could significantly advance neurointerventional outcomes.

Managing acute common carotid artery occlusion during ischemic stroke presents significant diagnostic and procedural complexity for neurovascular specialists. Although large vessel occlusions typically involve the middle cerebral artery, common carotid trunk blockages represent less than one percent of thrombectomy cases, historically creating clinical uncertainty about optimal recanalization approaches. Recent real-world evidence now demonstrates that emergency endovascular recanalization proves safe, feasible, and clinically effective when teams understand the condition's hemodynamic complexities and anatomical nuances. The vascular blockage's impact depends critically on collateral flow patterns and thrombus volume, with cardioembolism—particularly atrial fibrillation—identified in half of cases, while atheromatous plaque rupture or arterial dissection can produce extensive thrombosis across the carotid bifurcation. Over fifty percent of patients present with concomitant intracranial vessel occlusions, severely worsening hemispheric hypoperfusion. Retrograde collateral pathways through the circle of Willis or external carotid anastomoses temporarily sustain the cerebral penumbra, but failure rapidly progresses massive hemispheric infarction. Clinical presentation varies dramatically from catastrophic hemiplegia to deceptively mild symptoms due to collateral compensation, demanding swift clinical suspicion and rapid intervention to rescue threatened cerebral tissue.

Endovascular treatment (EVT) represents a promising intervention for acute ischemic stroke, yet its efficacy for isolated anterior cerebral artery occlusion (ACAO) remains unclear. This retrospective study compared EVT versus best medical treatment (BMT) in 69 patients with acute ACAO treated between May 2020 and October 2025. Of the 32 patients receiving EVT, successful reperfusion was achieved in 27 cases (84.4%). However, the primary outcome of excellent functional recovery, defined as a 90-day modified Rankin Scale score of 0–1, occurred in 45.9% of BMT patients versus 40.6% of EVT patients. After adjusting for baseline differences using logistic regression and inverse probability of treatment weighting, EVT showed no statistically significant improvement over BMT for 90-day functional outcomes or secondary outcomes including mortality and hemorrhage complications. These findings suggest that while EVT achieves high reperfusion rates in ACAO cases, this technical success does not necessarily translate to superior clinical outcomes compared with medical management alone. The authors emphasize the need for larger multicenter trials to establish optimal treatment strategies for this medium-vessel occlusion subgroup, which represents 25–40% of acute ischemic strokes.

This propensity-matched analysis using TriNetX data examines clinical outcomes following endovascular treatment of unruptured intracranial aneurysms with two antiplatelet medications: clopidogrel and prasugrel. Unruptured intracranial aneurysms represent a significant clinical challenge, and endovascular intervention requires dual antiplatelet therapy to prevent thrombotic complications. The study compares safety and efficacy profiles of clopidogrel, a conventional P2Y12 inhibitor, against prasugrel, a more potent third-generation P2Y12 inhibitor. Prasugrel offers faster onset of action and stronger platelet inhibition but carries increased bleeding risk. This comparative effectiveness research evaluates whether prasugrel's superior antiplatelet potency translates to improved clinical outcomes or whether enhanced bleeding complications offset potential benefits. The propensity-matching methodology controls for baseline patient characteristics and comorbidities, enabling a rigorous assessment of medication effects independent of selection bias. These findings have important implications for optimizing antiplatelet regimens in endovascular neurovascular procedures, potentially informing clinical practice guidelines and individualized treatment selection for patients undergoing aneurysm intervention.

Despite successful endovascular thrombectomy achieving high recanalization rates in large vessel occlusion stroke, many patients experience poor outcomes. This multicenter retrospective study examined 375 patients to investigate persistent hypoperfusion detected immediately after recanalization using perfusion maps generated from post-recanalization digital subtraction angiography. Hypoperfusion was categorized as regional or cortical based on spatial distribution. Persistent hypoperfusion occurred in 29.6% of successfully recanalized patients and was strongly associated with reduced functional independence at 90 days, with an adjusted odds ratio of 0.23. Patients with hypoperfusion also demonstrated higher rates of hemorrhagic transformation and symptomatic intracranial hemorrhage. Quantitative analysis identified minimum regional cerebral blood flow as a critical predictor of functional outcomes. Notably, immediate post-recanalization hypoperfusion showed poor agreement with 24-hour computed tomography perfusion imaging. These findings suggest that persistent hypoperfusion detected during endovascular procedures represents a potential intraprocedural biomarker for identifying patients requiring adjunctive therapeutic interventions to improve long-term functional recovery.

Researchers have developed a novel intraoperative technique for monitoring intra-aneurysmal pressure during surgical intervention for cerebral aneurysms. This study, published in Scientific Reports, introduces real-time pressure monitoring capabilities that enable surgeons to assess aneurysm hemodynamics directly during procedures. By inserting specialized pressure-sensing devices into the aneurysmal sac, clinicians can obtain precise measurements of pressure changes in response to various surgical maneuvers. The key finding demonstrates that intraoperative pressure monitoring provides valuable data about aneurysm stability and flow dynamics, potentially improving surgical decision-making and outcomes. This innovation matters significantly because it offers surgeons objective, quantitative feedback previously unavailable during aneurysm repair, allowing for more targeted interventions and better assessment of procedural success. The technique could enhance safety by identifying inadequately treated aneurysms before patient closure, potentially reducing postoperative complications and improving long-term patient outcomes in cerebral aneurysm management.

Balloon guide catheter (BGC) in stent retriever based thrombectomy (BGC+SR) for patients with large vessel occlusion strokes (LVOS) improves outcomes. It is conceivable that the addition of a large bore distal access catheter (DAC) to BGC+SR leads to higher efficacy. We aimed to investigate whether the combined BGC+DAC+SR approach improves angiographic and clinical outcomes compared with BGC+SR alone for thrombectomy in anterior circulation LVOS.

Recent advances in endovascular techniques for aneurysm management demonstrate significant progress in minimally invasive treatment approaches. Current research explores innovative solutions including percutaneous pedicle screw fixation methods that maintain anatomical safety while reducing vascular complications. Novel off-the-shelf endograft systems with fenestrations and branched designs effectively treat complex juxtarenal and pararenal abdominal aortic aneurysms. Flow-diverter technologies continue evolving, with new flow-disruptor devices showing promising efficacy in preclinical models. Additionally, studies on very short flow diverters for intracranial internal carotid artery aneurysms challenge conventional approaches, expanding treatment options. These developments collectively enhance clinical outcomes through safer, more efficient endovascular interventions.

Acute stroke due to medium vessel occlusion (MeVO) accounts for 25% to 40% of all acute ischemic stroke cases and is associated with substantial morbidity despite current best medical management. This motivated several recently published and ongoing trials that investigate(d) the benefit of endovascular thrombectomy (EVT) for MeVO stroke. Two of these trials have been published, an interim analysis of a third has been presented, and a fourth will be presented soon. The available trial results suggest no difference in outcomes between EVT and best medical management, and a possibility of harm with EVT. Preliminary post hoc analyses have however identified promising patient subgroups that may derive benefit from EVT. Improving EVT tools and techniques, together with adjunctive treatments, may further increase the technical efficacy of MeVO EVT. This review summarizes clinical and imaging features of MeVO stroke, reviews current evidence for medical and endovascular treatment, discusses recent MeVO EVT trial results, and outlines possible pathways forward for future MeVO trials.