What Threshold Defines Penumbral Brain Tissue in Patients with Symptomatic Anterior Circulation Intracranial Stenosis: An Exploratory Analysis

CONCLUSIONSA target mismatch profile usingTmax  >  6 seconds may define tissue at risk in patients with acute symptomatic proximal anterior circulation intracranial stenosis. More studies are needed to confirm our findings.
Source: Journal of Neuroimaging - Category: Radiology Authors: Tags: Clinical Investigative Study Source Type: research

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Abstract Recovery of motor function after stroke involves many biomarkers. This review attempts to identify the biomarker effects responsible for recovery of motor function following the use of Constraint-Induced Movement Therapy (CIMT) and discuss their implications for research and practice. From the studies reviewed, the biomarker effects identified include improved perfusion of motor areas and brain glucose metabolism; increased expression of proteins, namely, Brain-Derived Neurotrophic Factor (BDNF), Vascular Endothelial Growth Factor (VEGF), and Growth-Associated Protein 43 (GAP-43); and decreased level of G...
Source: Neural Plasticity - Category: Neurology Authors: Tags: Neural Plast Source Type: research
The importance of quick door-to-needle times for patients with focal cerebral ischaemia who are candidates for thrombolysis, and the emergence of mechanical thrombectomy as an effective treatment for large vessel occlusion ischaemic stroke, underlines the importance of early imaging and timely intervention. In this article we cover the main imaging modalities, including computed tomography (CT), CT angiography, magnetic resonance imaging, digital subtraction angiography and perfusion imaging.
Source: Medicine - Category: Internal Medicine Authors: Tags: Investigations in neurology Source Type: research
Conclusion: Direct inhibition of smooth muscle myosin by AmBleb in pre-capillary SMCs significantly contribute to the improvement of cerebral blood reperfusion and brain functions suggesting that smooth muscle myosin inhibition may have promising potential in stroke therapies as a follow-up treatment of physical or chemical removal of the occluding thrombus.
Source: Theranostics - Category: Molecular Biology Authors: Tags: Research Paper Source Type: research
Conclusion: We thus provide the proof of concept that in a mouse model of thromboembolic stroke with an intact skull, early ultrafast ultrasound can be indicative of responses to treatment and cerebral tissue fates following stroke. It brings new tools to study ischemic stroke in preclinical models and is the first step prior translation to the clinical settings.
Source: Theranostics - Category: Molecular Biology Authors: Tags: Research Paper Source Type: research
AbstractPurpose of ReviewThe purpose of this article is to review the current approaches using neuroimaging techniques to expand eligibility for intravenous thrombolytic therapy in acute ischemic stroke patients with stroke of unknown symptom onset.Recent FindingsIn recent years, several randomized, placebo-controlled trials have shown neuroimaging-guided approaches to be feasible in determining eligibility for alteplase beyond 4.5  h from last known well, and efficacious for reducing disability. DWI-FLAIR mismatch on MRI is an effective tool to identify stroke lesions less than 4.5 h in onset in patients with st...
Source: Current Neurology and Neuroscience Reports - Category: Neuroscience Source Type: research
Crossed cerebellar diaschisis (CCD) is a common finding in hyper-acute ischemic stroke, related to supratentorial dysfunction of the contralateral hemisphere. Several studies investigated a possible relationship between CCD and clinical outcomes but still no evidence emerged. We used a novel quantitative whole cerebellum analysis using CT perfusion (CTP) imaging to investigate the relationship between CCD and stroke severity, hypoperfused volume and outcome measures.
Source: Journal of the Neurological Sciences - Category: Neurology Authors: Source Type: research
In this study, 5% of VF arrest was due to PE: V fib is initial rhythm in PE in 3 of 60 cases. On the other hand, if the presenting rhythm is PEA, then pulmonary embolism is likely.  When there is VF in PE, it is not the initial rhythm, but occurs after prolonged PEA renders the myocardium ischemic.--Another study by Courtney and Kline found that, of cases of arrest that had autopsy and found that a presenting rhythm of VF/VT had an odds ratio of 0.02 for massive pulmonary embolism as the etiology, vs 41.9 for PEA.    ===================================MY Comment by KEN ...
Source: Dr. Smith's ECG Blog - Category: Cardiology Authors: Source Type: blogs
Abstract BACKGROUND: Early neurologic deterioration (END) may occur in patients with anterior circulation ischemic stroke (ACIS) after receiving endovascular treatment (EVT). Hemodynamic insufficiency, re-occlusion, and post-re-canalization hyper-perfusion are likely to play a critical role in END. We hypothesized that hemodynamic changes can predict END in patients with ACIS post-successful EVT using trans-cranial Doppler (TCD). METHODS: We utilized a prospectively maintained database of ACIS patients treated with EVT between September 2016 and June 2018 at the Xuanwu Hospital, Capital Medical University. TC...
Source: Chinese Medical Journal - Category: General Medicine Authors: Tags: Chin Med J (Engl) Source Type: research
This study aims to reveal factors associated with HT in patients with ischemic onset manifestation and to assess the outcome of these patients.Methods: A total of 683 surgically managed patients with onset ischemic manifestation were included. The clinical variables of the HT and non-HT groups were compared, and risk factors were analyzed using logistic regression analysis. Recurrent stroke events (including hemorrhagic and ischemic) during the follow-up were documented. The cumulative incidence rate of stroke events was generated via Kaplan–Meier survival analysis. Outcomes were compared between HT and non-HT groups...
Source: Frontiers in Neurology - Category: Neurology Source Type: research
Conclusion: Direct compression of ICA is rare complication of pituitary apoplexy, which caused cerebral ischemia. Conventional angiography should be necessary for accurate diagnosis and prompt surgical decompression should be the treatment of choice. PMID: 32494388 [PubMed]
Source: Surgical Neurology International - Category: Neurosurgery Tags: Surg Neurol Int Source Type: research
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