Stroke; a journal of cerebral circulation
-
Clinical Trial
Old microbleeds are a potential risk factor for cerebral bleeding after ischemic stroke: a gradient-echo T2*-weighted brain MRI study.
T2*-weighted gradient-echo MRI is known to detect old microbleeds (MBs), considered indicative of microangiopathy. MBs might be a potential risk factor for early cerebral bleeding (CB) after ischemic stroke. Therefore, we assessed the impact of MBs on the occurrence of CB after cerebral infarction. ⋯ Although the pathogenesis of CB after ischemic stroke is multifactorial, the increased observation of CB in patients with MBs suggests that the associated vascular vulnerability contributes to CB.
-
Randomized Controlled Trial Clinical Trial
Effect of controlled release/extended release metoprolol on carotid intima-media thickness in patients with hypercholesterolemia: a 3-year randomized study.
Beta-adrenergic blockade has in several studies been shown to improve survival after myocardial infarction. In animal experiments beta-blockers have also shown an antiatherosclerotic effect. The aim of this study was to test the hypothesis that the beta-blocker metoprolol succinate controlled release/extended release (CR/XL), when given to patients with hypercholesterolemia on concomitant lipid-lowering therapy, provides an additional antiatherosclerotic effect to that provided by the statins, measured as carotid intima-media thickness (IMT). ⋯ The results from the present study in patients with hypercholesterolemia under concomitant lipid-lowering therapy are the first clinical data to show an antiatherosclerotic effect of beta-blockade as additional therapy to statins. The data indicate that statin treatment and treatment with beta-blockers affect different mechanisms in the atherosclerotic process and have additive beneficial effects.
-
Randomized Controlled Trial Comparative Study Clinical Trial
Randomized controlled study of stroke unit care versus stroke team care in different stroke subtypes.
The benefits of stroke unit management may vary according to stroke subtype. A post hoc analysis of the influence of stroke subtype on stroke unit effectiveness was undertaken by using prospective data collected in a randomized controlled trial. ⋯ Stroke units improve the outcome in patients with large-vessel infarcts but not in those with lacunar syndromes. For lacunar strokes, stroke unit management may be associated with higher initial health costs for equivalent benefit.
-
Clinical Trial
Effects of body position on intracranial pressure and cerebral perfusion in patients with large hemispheric stroke.
The purpose of this study was to prospectively evaluate the effects of body position in patients with large supratentorial stroke. ⋯ In patients with large hemispheric stroke without an acute ICP crisis, cerebral perfusion pressure was maximal in the horizontal position although ICP was usually at its highest point. If adequate cerebral perfusion pressure is considered more desirable than the absolute level of ICP, the horizontal position is optimal for these patients.
-
Clinical Trial
Effects of hypothermia on excitatory amino acids and metabolism in stroke patients: a microdialysis study.
The objective of this study was to assess the effect of therapeutic moderate hypothermia on excitatory amino acids and metabolism by applying cerebral microdialysis in patients suffering from space-occupying middle cerebral artery infarction. ⋯ Cerebral microdialysis is a safe and feasible bedside method for neurochemical monitoring indicating normal brain tissue, potentially salvageable brain tissue, and irreversibly damaged areas in stroke. We could demonstrate that hypothermia decreases glutamate, glycerol, lactate, and pyruvate in the "tissue at risk" area of the infarct but not within the infarct core. Thus, future treatment strategies for life-threatening stroke should be guided by close neurochemical monitoring.