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Condition: Bleeding
Procedure: Perfusion

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Total 151 results found since Jan 2013.

Pathophysiological Role of Global Cerebral Ischemia following Subarachnoid Hemorrhage: The Current Experimental Evidence.
Authors: Plesnila N Abstract Subarachnoid hemorrhage (SAH) is the subtype of stroke with one of the highest mortality rates and the least well-understood pathophysiologies. One of the very early events which may occur after SAH is a significant decrease of cerebral perfusion pressure (CPP) caused by the excessive increase of intracranial pressure during the initial bleeding. A severely decreased CPP results in global cerebral ischemia, an event also occurring after cardiac arrest. The aim of the current paper is to review the pathophysiological events occurring in experimental models of SAH and global cerebral isch...
Source: Stroke Research and Treatment - December 2, 2014 Category: Neurology Tags: Stroke Res Treat Source Type: research

Combining Human Umbilical Cord Blood Cells With Erythropoietin Enhances Angiogenesis/Neurogenesis and Behavioral Recovery After Stroke
In conclusion, our results suggest that hUCBC infusion in combination with EPO administration demonstrates therapeutic efficacy in the treatment of stroke-induced injury by promoting neurogenesis and angiogenesis. Further research that delineates the therapeutic mechanism of systemically administered hUCBC and EPO is required. Ethics Statement All experimental procedures involving animals were performed in accordance with the Guide for the Care and Use of Laboratory Animals as adopted and promulgated by the U. S. National Institutes of Health and were approved by CHA University Institutional Animal Care & Use Com...
Source: Frontiers in Neurology - April 9, 2019 Category: Neurology Source Type: research

Influence of Sex on Stroke Prognosis: A Demographic, Clinical, and Molecular Analysis
Conclusion Our data suggest that women who suffer from IS present with a poorer functional outcome than men at 3-months, regardless of other preclinical and clinical factors during the acute phase. These relationships seem to be mediated by atrial dysfunction and inflammation. The inflammatory response is slightly higher in women; however, there are no sex differences in their functional behavior. There is a probable relationship between the molecular marker of atrial dysfunction NT-proBNP and worse functional outcome in women, and the connection seems to be more important in cardioembolic stroke patients. In patients wi...
Source: Frontiers in Neurology - April 16, 2019 Category: Neurology Source Type: research

Advances in stroke medicine.
Authors: Campbell BC Abstract In recent years, reperfusion therapies such as intravenous thrombolysis and endovascular thrombectomy for ischaemic stroke have dramatically reduced disability and revolutionised stroke management. Thrombolysis with alteplase is effective when administered to patients with potentially disabling stroke, who are not at high risk of bleeding, within 4.5 hours of the time the patient was last known to be well. Emerging evidence suggests that other thrombolytics such as tenecteplase may be even more effective. Treatment may be possible beyond 4.5 hours in patients selected using brain imagi...
Source: Medical Journal of Australia - May 6, 2019 Category: General Medicine Tags: Med J Aust Source Type: research

Leukoaraiosis as an outcome predictor in the acute and subacute phases of stroke.
Authors: Fierini F, Poggesi A, Pantoni L Abstract INTRODUCTION: Leukoaraiosis (LA) is one of the neuroimaging features of cerebral small vessel disease and is associated with poor long-term prognosis. Areas covered: This narrative review focuses on the predictive role of LA on the evolution of the ischemic brain damage and on the clinical outcome in the subacute phase of stroke and in the short-term period afterwards. Expert commentary: In acute stroke, LA is associated with a less favorable fate of brain infarct and is a marker of increased risk of thrombolysis-related hemorrhagic transformation. The impaired cerebra...
Source: Expert Review of Neurotherapeutics - August 23, 2017 Category: Neurology Tags: Expert Rev Neurother Source Type: research

Aortic dissection diagnosed on stroke computed tomography protocol: a case report
ConclusionsWhen acute stroke is suspected due to neurological deficits, plain head CT is the first choice for imaging diagnosis. The addition of cervical CT angiography can reliably exclude stroke due to aortic dissection. CTP can identify ischemic penumbra, which cannot be diagnosed by plain head CT or diffusion-weighted magnetic resonance imaging. These combined stroke CT protocols helped us avoid missing an aortic dissection.
Source: Journal of Medical Case Reports - May 26, 2021 Category: General Medicine Source Type: research

Ischemic stroke and intracranial hemorrhage in extracorporeal membrane oxygenation for COVID-19: A systematic review and meta-analysis
CONCLUSIONS: Ischemic stroke and ICH were common under the double "hit" of COVID-19 and ECMO. The prevalence of ICH was significantly higher in COVID-19 patients supported with ECMO than non-COVID-19 patients requiring ECMO. Individualized anticoagulation regimens may be a good choice to balance thrombosis and bleeding. More detailed research and further exploration are needed to clarify the underlying mechanism and clinical management decisions.PMID:36189498 | DOI:10.1177/02676591221130886
Source: Perfusion - October 3, 2022 Category: Cardiovascular & Thoracic Surgery Authors: Yu Jin Yang Zhang Jinping Liu Source Type: research

Cerebral blood volume Alberta Stroke Program Early Computed Tomography Score predicts intracranial hemorrhage after thrombectomy in patients with acute ischemic stroke in an extended time window.
CONCLUSION: Low CBV-ASPECTS independently predicts ICH in patients with AIS treated with thrombectomy selected by CTP in an extended time window. PMID: 33541090 [PubMed - as supplied by publisher]
Source: Acta Radiologica - February 4, 2021 Category: Radiology Authors: Cao YZ, Zhao LB, Jia ZY, Liu QH, Xu XQ, Shi HB, Liu S Tags: Acta Radiol Source Type: research

Intravenous thrombolysis for acute ischemic stroke: why not?
Purpose of review The aim of this study was to summarize available evidence regarding the safety and efficacy of intravenous thrombolysis (IVT) using recombinant tissue-plasminogen activator (rt-PA) in acute ischemic stroke (AIS) patients with specific comorbidities and potential contraindications to systemic reperfusion therapy. Recent advances in IVT implementation in wake-up stroke and in extended time window using advanced neuroimaging will also be highlighted. Recent findings Despite theoretical concerns of a higher bleeding risk with IVT, there are no data showing increased risk of symptomatic intracerebra...
Source: Current Opinion in Neurology - January 19, 2022 Category: Neurology Tags: CEREBROVASCULAR DISEASE: Edited by Diana Aguiar de Sousa Source Type: research

Ischemic stroke in greyhounds
Stroke can be the result of ischemic or hemorrhagic events that cause decreased perfusion to the entire brain or to a specific region of the brain. Ischemic stroke is the result of vascular occlusion secondary to a thrombus or embolus. Hemorrhagic stroke is the result of bleeding.
Source: Advances in Small Animal Medicine and Surgery - January 1, 2015 Category: Veterinary Research Tags: Neurology Source Type: research

The role of multimodal imaging in stroke code patients.
Abstract In stroke code patients, multimodal imaging workup encompasses various imaging techniques, including baseline computed tomography (CT), magnetic resonance (MR) imaging, diffusion MR imaging, CT or MR perfusion studies, and CT or MR angiography, that are used to rule out bleeding, confirm arterial occlusion, establish tissue viability, and help select candidates for endovascular treatment as early as possible. Five recently published relevant clinical trials have demonstrated the efficacy of mechanical thrombectomy in proximal arterial occlusions; all these trials used different imaging techniques to selec...
Source: Radiologia - October 19, 2017 Category: Radiology Authors: Grau García M, Pérez Bea M, López Medina A Tags: Radiologia Source Type: research

Evaluation of the role of susceptibility-weighted imaging in thrombolytic therapy for acute ischemic stroke
Publication date: Available online 20 February 2017 Source:Journal of Clinical Neuroscience Author(s): Guangjian Zhao, Ling Sun, Ziran Wang, Liquan Wang, Zhongrong Cheng, Hongyan Lei, Daiqun Yang, Yansen Cui, Shirui Zhang We inspected low-intensity venous signals and microbleeds in patients with acute ischemic stroke (AIS) using susceptibility-weighted imaging (SWI) before and after administration of within-thrombolytic-time-window thrombolytic therapies, and observed their prognosis and safety, in order to guide individualized thrombolytic therapies. Patients with AIS were divided into groups A or B according to the pres...
Source: Journal of Clinical Neuroscience - February 20, 2017 Category: Neuroscience Source Type: research

The acute management of haemorrhage, surgery and overdose in patients receiving dabigatran
Dabigatran is an oral direct thrombin inhibitor (DTI) licensed for stroke prevention in atrial fibrillation and likely to be soon approved in Europe for treatment of venous thrombosis. Predictable pharmacokinetics and a reduced risk of intracranial haemorrhage do not negate the potential risk of haemorrhage. Unlike warfarin, there is no reversal agent and measurement of the anticoagulant effect is not ‘routine’. The prothrombin time/international normalised ratio response to dabigatran is inconsistent and should not be measured when assessing a patient who is bleeding or needs emergency surgery. The activated p...
Source: Emergency Medicine Journal - January 15, 2014 Category: Emergency Medicine Authors: Alikhan, R., Rayment, R., Keeling, D., Baglin, T., Benson, G., Green, L., Marshall, S., Patel, R., Pavord, S., Rose, P., Tait, C. Tags: Poisoning/Injestion, Open access, Drugs: cardiovascular system, Stroke, Poisoning Review Source Type: research

The Rabbit Shunt Model of Subarachnoid Haemorrhage
Abstract Aneurysmal subarachnoid haemorrhage (SAH) is a disease with devastating complications that leads to stroke, permanent neurological deficits and death. Clinical and ex-perimental work has demonstrated the importance of the contribution of delayed cerebral vasospasm (DCVS) indepen-dent early events to mortality, morbidity and functional out-come after SAH. In order to elucidate processes involved in early brain injury (EBI), animal models that reflect acute events of aneurysmal bleeding, such as increase in intracranial pressure (ICP) and decrease in cerebral perfusion pressure, are needed. In the presented...
Source: Translational Stroke Research - October 19, 2014 Category: Neurology Source Type: research