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Sökning: L773:1759 8486

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1.
  • Falk Delgado, Alberto, et al. (författare)
  • Clinical outcome after surgical clipping or endovascular coiling for cerebral aneurysms : a pragmatic meta- analysis of randomized and non- randomized trials with short- and long- term follow- up
  • 2017
  • Ingår i: JOURNAL OF NEUROINTERVENTIONAL SURGERY. - : BMJ PUBLISHING GROUP. - 1759-8478 .- 1759-8486. ; 9:3, s. 264-
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Two randomized trials have evaluated clipping and coiling in patients with ruptured aneurysms. Aggregated evidence for management of ruptured and unruptured aneurysms is missing. Objective To conduct a meta- analysis evaluating clinical outcome after aneurysm treatment. Methods PubMed, Cochrane Central Register of Controlled Trials, and Clinicaltrials. gov were searched for studies evaluating aneurysm treatment. The primary outcome measure was an independent clinical outcome ( modified Rankin scale 0- 2, Glasgow Outcome Scale 4- 5, or equivalent). Secondary outcomes were poor outcome and mortality. ORs were calculated on an intention- to- treat basis with 95% Cls. Outcome heterogeneity was evaluated with Cochrane's Q test ( significance level cut- off value at < 0.10) and l(2) ( significance cut- off value > 50%) with the Mantel-Haenszel method for dichotomous outcomes. A p value < 0.05 was regarded as statistically significant. Results Searches yielded 18 802 articles. All titles were assessed, 403 abstracts were evaluated, and 183 full-text articles were read. One- hundred and fifty articles were qualitatively assessed and 85 articles were included in the meta- analysis. Patients treated with coiling ( randomized controlled trials ( RCTs)) had higher independent outcome at short- term follow- up ( OR= 0.67, 95% Cl 0.57 to 0.79). Independent outcome was favored for coiling at intermediate and long- term follow-up ( RCTs and observational studies combined-OR= 0.80, 0.68 to 0.94 and OR= 0.81, 0.71 to 0.93, respectively). Independent outcome and lower mortality was favored after coiling in unruptured aneurysms ( database registry studies) at short- term follow- up ( OR= 0.34, 0.29 to 0.41 and OR= 1.74, 1.52 to 1.98, respectively). Conclusions This meta- analysis evaluating clinical outcome after coiling or clipping for intracranial aneurysms, indicates a higher independent outcome and lower mortality after coiling.
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  • Douglas, Andrew, et al. (författare)
  • Platelet-rich emboli are associated with von Willebrand factor levels and have poorer revascularization outcomes.
  • 2020
  • Ingår i: Journal of neurointerventional surgery. - 1759-8486. ; 12:6
  • Tidskriftsartikel (refereegranskat)abstract
    • Platelets and von Willebrand factor (vWF) are key factors in thrombosis and thus are likely key components of acute ischemic stroke (AIS) emboli. We aimed to characterize platelet and vWF levels in AIS emboli and to assess associations between their expression levels and clinical and procedural information.Histopathological and immunohistochemical analysis of emboli collected as part of the multi-institutional RESTORE registry was performed. The composition of the emboli was quantified using Orbit Image Analysis machine learning software. Correlations between clot components and clinical and procedural information were assessed using the χ2 test.Ninety-one emboli samples retrieved from 63 patients were analyzed in the study. The mean platelet (CD42b) content of the clots was 33.9% and the mean vWF content of the clots was 29.8%. There was a positive correlation between platelet and vWF levels (ρ=0.564, p<0.001*, n=91). There was an inverse correlation between both platelets and vWF levels and percentage of red blood cells (RBCs) in the emboli (CD42b vs RBC: ρ=-0.535, p<0.001*, n=91; vWF vs RBC: ρ=-0.366, p<0.001*, n=91). Eighty-one percent of patients in the low platelet group had a good revascularization outcome (Thrombolysis in Cerebral Infarction 2c/3) compared with 58% in the high platelet group (χ2=5.856, p=0.016).Platelet and vWF levels in AIS emboli correlate with each other and both have an inverse relationship with RBC composition. Patients with platelet-rich clots have poorer revascularization outcomes.
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