Cerebrovascular diseases
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Cerebrovascular diseases · Jan 2004
Complete nonvisualization of basilar artery on MR angiography in patients with vertebrobasilar ischemic stroke: favorable outcome factors.
In vertebrobasilar ischemic stroke, magnetic resonance angiography (MRA) occasionally fails to visualize the basilar artery, but in these patients, little attention has been given to establishing correlations between the clinical and the radiological findings. Our aim was to identify clinical or radiological measures that could assist in predicting a favorable clinical outcome. ⋯ Our study suggests that a higher PFAS, accompanied by a single-sector infarction, is a predictor of improved clinical outcome in patients with vertebrobasilar ischemic stroke in which the basilar artery was absent on MRA.
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Cerebrovascular diseases · Jan 2004
Clinical TrialAcetylsalicylic acid and acetaminophen to combat elevated body temperature in acute ischemic stroke.
Because elevated body temperature (BT) in acute ischemic stroke is associated with poor outcome, it is currently recommended to maintain normothermia with antipyretics. Whether this can be achieved by the administration of acetylsalicylic acid (ASA) or acetaminophen is uncertain. ⋯ In the majority of patients with acute ischemic stroke, ASA and acetaminophen are insufficient for reducing an elevated BT to a state of normothermia.
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Cerebrovascular diseases · Jan 2004
The evaluation of Wallerian degeneration in chronic paediatric middle cerebral artery infarction using diffusion tensor MR imaging.
The long-term neuromotor outcome in paediatric strokes ranges from normal to varying degrees of hemiplegia. We evaluated the indices of diffusion tensor magnetic resonance imaging (DTI), fractional anisotropy and mean diffusivity to determine if these indices can identify and quantify the presence of Wallerian degeneration in paediatric patients with chronic middle cerebral artery infarction, and to determine if these quantitative parameters correlate with the neuromotor outcome. ⋯ DTI can be used to detect and quantify Wallerian degeneration in chronic paediatric middle cerebral artery infarction. Our preliminary data show that loss of anisotropy in the corticospinal tract correlates with neuromotor outcome.
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Cerebrovascular diseases · Jan 2004
Mechanisms of single and multiple borderzone infarct: transcranial Doppler ultrasound/magnetic resonance imaging correlates.
Hemodynamic patterns after borderzone (BZ) infarction are variable and dynamic. However, stroke mechanisms in different types of BZ infarctions have not been systematically studied by magnetic resonance angiography (MRA) and transcranial Doppler ultrasonography (TCD). ⋯ The association of severe ICA stenosis or occlusion with cardiopathies and left ventricular dysfunction may play a critical role in those with BZ infarcts having inadequate collateral supply, while a cardioembolism or acute ICA dissection may also cause BZ infarction due to the rapidity of the occlusive process and the inability of the cerebral vasculature to recruit collateral pathways quickly enough.