Abstract Background and Purpose— Thrombectomy in late time windows leads to improved outcomes in patients with ischemic stroke due to large vessel occlusion. We determined whether patients with rapid neurological improvement (RNI) 24 hours after thrombectomy were more likely to have a favorable clinical outcome in the DEFUSE 3 study (Endovascular Therapy Following Imaging Evaluation for Ischemic Stroke 3).
Abstract Background and Purpose— Acute stroke patients with a large ischemic core may still benefit from mechanical thrombectomy (MT), but the predictors of clinical outcome are not well known after MT. We investigated the clinical and imaging factors associated with good outcome and mortality at 90 days in acute stroke patients with a large baseline ischemic core treated with MT.
Abstract Background and Purpose— Mechanical thrombectomy may involve multiple attempts to retrieve the occluding thrombus. This study examined the composition of thrombus fragments retrieved with each pass of a device during the thrombectomy procedure. Second, the per-pass composition was compared with procedural and clinical data including angiographic outcome and stroke etiology.
Abstract Background and Purpose— Four-dimensional phase-contrast magnetic resonance imaging enables quantification of blood flow rate (BFR; mL/min) in multiple cerebral arteries simultaneously, making it a promising technique for hemodynamic investigation in patients with stroke. The aim of this study was to quantify the hemodynamic disturbance and the compensatory pattern of collateral flow in patients with symptomatic carotid stenosis.
Abstract Background and Purpose— Accurate prediction of acute ischemic stroke (AIS) caused by anterior large vessel occlusion (LVO) that is amendable to mechanical thrombectomy remains a challenge. We developed and validated a prediction model for anterior circulation LVO stroke using past medical history elements present on admission and neurological examination.
Abstract Background and Purpose A much higher rupture rate for patients with familial intracranial aneurysms (IA) compared with patients with sporadic IA has been reported in a study with highly selected familial aneurysms using sporadic patients from other populations a controls. We aimed to validate these findings in a large independent series of Dutch patients with familial and sporadic IA.
Abstract Background and Purpose— Understanding the hemorrhage risks associated with brain arteriovenous malformations (AVMs) before and after stereotactic radiosurgery (SRS) is important. The aims of this multicenter, retrospective cohort study are to evaluate and compare the rates of pre- and post-SRS AVM hemorrhage and identify risk factors.
Abstract Background and Purpose— The benefit of endovascular therapy in extended time windows has been demonstrated in patients with anterior circulation large vessel occlusion ischemic stroke and favorable imaging profile. We evaluated whether collaterals and thrombus burden influence the associations between revascularization, time-to-treatment, and outcome in endovascular therapy-treated patients with basilar artery occlusion.
Abstract Background and Purpose— Intracranial atherosclerosis (ICAS) is an important cause of large vessel occlusion and poses unique challenges for emergent endovascular thrombectomy. The risk factor profile and therapeutic outcomes of patients with ICAS-related occlusions (ICAS-O) are unclear. We performed a systematic review and meta-analysis of studies reporting the clinical features and thrombectomy outcomes of large vessel occlusion stroke secondary to underlying ICAS (ICAS-O) versus those of other causes (non–ICAS-O).
Abstract Background and Purpose— The clinical course in patients with ischemic stroke treated with mechanical thrombectomy (MT) is heterogeneous. We aimed to study the relevance of the timing of clinical improvement in the prediction of long-term outcome in patients treated with MT.
Abstract Background and Purpose— To evaluate the safety and effectiveness of the Surpass Flow Diverter (Surpass; Stryker Neurovascular, Fremont, CA) in the treatment of large or giant wide-neck intracranial aneurysms at one year, we hypothesize that treatment with Surpass meets or improves on historical safety and efficacy end points.
Abstract Background and Purpose— Based on its mechanism, the use of balloon guide catheters (BGCs) may be beneficial during endovascular treatment, regardless of the type of mechanical recanalization modality used—stent retriever thrombectomy or thrombaspiration. We evaluated whether the use of BGCs can be beneficial regardless of the first-line mechanical endovascular modality used.
Abstract Background and Purpose— Several studies have reported partial reversal of diffusion-weighted imaging (DWI) lesions after acute stroke reperfusion treatment. However, factors associated with DWI reversal have not yet been systematically investigated. We evaluated the factors associated with DWI reversal after endovascular treatment (EVT).
Abstract Background and Purpose— The development of leptomeningeal collateral artery network might be adversely affected by small vessel wall alteration. We sought to determine whether small vessel disease (SVD) burden may impact collateral development in patients treated by mechanical thrombectomy for anterior circulation acute ischemic stroke.
Mechanical thrombectomy (MT) therapy has become the standard of care for selected patients with acute ischemic stroke (AIS) due to emergent large vessel occlusion.1 After MT, the scheme for follow-up brain imaging is currently similar to that for patients treated with intravenous thrombolysis (IVT) or medical treatment: it is performed in emergency in cases of neurological worsening and within 24 hours1 to detect hemorrhagic transformation (HT), guide antithrombotic treatment regimen, and evaluate arterial patency and final infarct volume. Follow-up brain imaging findings nonetheless differ in patients who received MT from those who only received IVT, because of the arterial injection of iodine contrast in the target vessel, direct clot manipulations, and intracranial/cervical catheterization, as well as specific MT-related complications.
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