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Cerebral Microbleeds, Cognition and Therapeutic Implications
A recent major clinical advance in magnetic resonance imaging (MRI) of the brain is the development of paramagnetic-sensitive sequences such as T2-weighted gradient-recalled echo and susceptibility-weighted images for the detection of cerebral microbleeds (CMBs). On brain MRI, CMBs are small (≤5 to 10 mm in diameter), round, dark-signaled lesions that consist of extravasation of blood components through fragile microvascular walls that neuropathologically represent hemosiderin-laden macrophages. Magnetic resonance imaging–detected CMBs are common in elderly individuals, coexist with ischemic stroke and intracerebral he...
Source: JAMA Neurology - June 6, 2016 Category: Neurology Source Type: research

Cerebral Microbleeds and Thrombolysis
Using intravenous thrombolysis in a stroke patient with cerebral microbleeds represents one of the most challenging clinical decisions in acute stroke neurology. In this setting, the implications of coexisting ischemic and hemorrhagic cerebrovascular disease (mixed cerebrovascular disease) must be confronted and urgently addressed. The clinical consequences of intervening or not intervening are profound.
Source: JAMA Neurology - April 18, 2016 Category: Neurology Source Type: research

Symptomatic Intracerebral Hemorrhage After IV Thrombolysis in Acute Stroke
This meta-analysis investigates the association of high cerebral microbleed burden with the risk of symptomatic intracerebral hemorrhage in patients with acute ischemic stroke treated with intravenous thrombolysis.
Source: JAMA Neurology - April 18, 2016 Category: Neurology Source Type: research

Thrombolysis-Related Hemorrhage
Intravenous tissue plasminogen activator (tPA) improves outcomes when administered within 4.5 hours of symptom onset of ischemic stroke. Symptomatic intracranial hemorrhage (sICH) is the most feared complication after administration of intravenous tPA. The percentage of patients with a good functional outcome after sICH (as defined by the Safe Implementation of Thrombolysis in Stroke-Monitoring Study) following administration of tPA has been shown to be less than 7%, and mortality rates can be greater than 50%. Almost 2 decades after approval of intravenous tPA by the US Food and Drug Administration, our ability to prevent...
Source: JAMA Neurology - October 26, 2015 Category: Neurology Source Type: research

Microbleeds, Mortality, and Stroke in Alzheimer Disease The MISTRAL Study
Conclusions and RelevanceIn patients with AD, the presence of nonlobar microbleeds was associated with an increased risk for cardiovascular events and cardiovascular mortality. Patients with lobar microbleeds had an increased risk for stroke and stroke-related mortality, indicating that these patients should be treated with the utmost care.
Source: JAMA Neurology - March 23, 2015 Category: Neurology Source Type: research

Outcomes in Mild Acute Ischemic Stroke Treated With Intravenous Thrombolysis A Retrospective Analysis of the Get With the Guidelines–Stroke Registry
Conclusions and RelevanceMany patients with ischemic stroke treated with IV rtPA have a mild stroke. Symptomatic intracranial hemorrhage is infrequent, but approximately 30% of these patients are unable to return directly home or ambulate independently at discharge. Additional studies are needed to identify strategies to improve the outcomes in patients with mild stroke who receive thrombolysis.
Source: JAMA Neurology - February 2, 2015 Category: Neurology Source Type: research

Implementing a Mobile Stroke Unit Program in the United States Why, How, and How Much?
Conclusions and RelevanceThe MSU strategy could dramatically transform the way acute stroke is managed in the United States. A prospective study evaluating the logistics, outcomes, and cost-effectiveness of this approach is needed and under way.
Source: JAMA Neurology - December 8, 2014 Category: Neurology Source Type: research

Prehospital Thrombolysis for Stroke An Idea Whose Golden Hour Has Arrived
Soon after thrombolytic therapy was established as a therapy for ischemic stroke, our colleague Anthony Furlan, MD, famously circulated a cartoon of a computed tomographic (CT) scanner visible through the back doors of an ambulance, where a happy stroke physician had hung a bottle dripping tissue plasminogen activator (tPA) into the scanned patient’s arm. Because the time interval from stroke onset to initiation of thrombolysis after ischemic stroke is inversely related to the probability of disability-free recovery, prehospital initiation of thrombolytic therapy seemed a compelling and logical ambition, if one could rul...
Source: JAMA Neurology - November 17, 2014 Category: Neurology Source Type: research

Effects of Golden Hour Thrombolysis A Prehospital Acute Neurological Treatment and Optimization of Medical Care in Stroke (PHANTOM-S) Substudy
ImportanceThe effectiveness of intravenous thrombolysis in acute ischemic stroke is time dependent. The effects are likely to be highest if the time from symptom onset to treatment is within 60 minutes, termed the golden hour.ObjectiveTo determine the achievable rate of golden hour thrombolysis in prehospital care and its effect on outcome.Design, Setting, and ParticipantsThe prospective controlled Prehospital Acute Neurological Treatment and Optimization of Medical Care in Stroke study was conducted in Berlin, Germany, within an established infrastructure for stroke care. Weeks were randomized according to the availabilit...
Source: JAMA Neurology - November 17, 2014 Category: Neurology Source Type: research

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