Cerebrovascular diseases
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Cerebrovascular diseases · Jan 2003
Clinical TrialInfarct volume on apparent diffusion coefficient maps correlates with length of stay and outcome after middle cerebral artery stroke.
Diffusion-weighted MRI (DWI) can depict acute ischemia based on decreased apparent diffusion coefficient (ADC) values. ADC maps, unlike DWI (which have contributions from T2 properties), solely reflect diffusion properties. Recent studies indicate that severity of neurological deficit corresponds with degree of ADC alteration. ⋯ Infarct volume measured by using a quantitative definition for infarcted tissue on ADC maps correlated significantly with length of hospitalization (as a possible surrogate marker for short-term outcome) and functional outcome after 6 months. ADC infarct volume may provide prognostic information for patients with acute ischemic MCA stroke.
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Cerebrovascular diseases · Jan 2003
Practice Guideline GuidelineEuropean Stroke Initiative Recommendations for Stroke Management-update 2003.
This article represents the update of 'European Stroke Initiative Recommendations for Stroke Management', first published in this Journal in 2000. The recommendations are endorsed by the 3 European societies which are represented in the European Stroke Initiative: the European Stroke Council, the European Neurological Society and the European Federation of Neurological Societies.
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Cerebrovascular diseases · Jan 2003
Clinical TrialNoninvasive monitoring of cerebral oxygenation during vasomotor reactivity tests by a new near-infrared spectroscopy device.
Spatially resolved spectroscopy is a recently developed technique for noninvasive monitoring of cerebral tissue oxygenation using the photon diffusion theory. ⋯ Spatially resolved spectroscopy provides an encouraging, noninvasive new tool to study cerebral tissue oxygenation during vasomotor reactivity tests consistent with physiological changes.
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Cerebrovascular diseases · Jan 2003
ReviewLong-term outcome after ischaemic stroke/transient ischaemic attack.
During the first 30 days after a stroke, the case fatality is about 25% and the major cause of death is the index stroke and its sequelae. The most consistent predictor of 30-day mortality after stroke is stroke severity. Other predictors include increasing age, a history of previous stroke, cardiac failure, and a high blood glucose concentration and white blood cell count. ⋯ The most powerful predictor of early recurrent stroke (within 30 days after stroke) is an atherosclerotic ischaemic stroke caused by large-artery atherosclerosis with >50% stenosis, whereas the strongest predictor of stroke recurrence over 5 years is diabetes. Other predictors of recurrent stroke include increasing age, previous TIA, atrial fibrillation, high alcohol consumption, haemorrhagic index stroke, and hypertension at discharge. The clinical implication of these findings is that strategies for optimizing long-term outcome after TIA and stroke should be directed toward reducing the high risk of recurrent stroke and coronary events by removing/recanalizing the symptomatic atherosclerotic plaque, controlling the underlying causal vascular risk factors, and administering long-term, effective antiplatelet therapy.
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Cerebrovascular diseases · Jan 2003
Cerebral magnetic resonance imaging within 6 hours of stroke onset: inter- and intra-observer reproducibility.
Magnetic resonance imaging (MRI) provides valuable pathophysiological information during the very first hours of cerebral ischemia. However, the reliability of prime-time MRI in the setting of emergency care remains unknown. ⋯ The visual assessment of T2* gradient echo, TOF, diffusion and perfusion sequences at the acute stage of stroke is reproducible between and within observers. The visual assessment is as good as the volumetric assessment to detect a mismatch of >20%.