The purpose of this prospective cohort study is to investigate whether antithrombotic therapy in the secondary prevention of ischemic stroke increases the risk of the emerging CMBs and whether the change is associated with an increased risk of intracranial hemorrhage, providing an imaging evidence for individualized antithrombotic therapy in such patients.
Cerebral microbleeds(CMBs) is a subclinical lesion caused by microvascular disease in the brain, characterized by microleakage of blood. About 30% of ischemic stroke patients, 40% of the healthy people over 80 years old, and 60% of intracranial hemorrhage patients have microbleeds. With the development of imaging technology, clinically more and more patients have found microbleeds in the brain. How these patients are treated with antithrombotic drugs is not yet clear and is in urgent need of evidence. There are only a few prospective cohort studies to determine whether antithrombotic therapy increases the risk of intracranial hemorrhage in ischemic stroke patients with CMBs, but the results are uncertain. More importantly, whether antithrombotic therapy increases the incidence of the emerging CMBs, and whether the change of increased microbleeds is associated with increased intracranial hemorrhage has not been reported.
Study Type
OBSERVATIONAL
Enrollment
1,875
Acute ischemic stroke patient confirmed by SWI sequence
General Hospital of ShenYang Military Region
Shenyang, China
RECRUITINGall cerebral bleeding events
incidence of both cerebral microbleeds and intracranial hemorrhage, determined by MRI
Time frame: 360 days
all cerebral bleeding events
incidence of both cerebral microbleeds and intracranial hemorrhage, determined by MRI
Time frame: 180 days
proportion of mRS 0-1.
the minimum and maximum values of modified Rankin Score (mRS) are 0 and 6, respectively; higher score mean a worse outcome
Time frame: 180、360 days
proportion of cerebral microbleeds
cerebral microbleeds, determined by MRI
Time frame: 180 、360 days
proportion of cerebral hemorrhage
cerebral hemorrhage, determined by MRI
Time frame: 180、360 days
the occurence of stroke or other vascular events
Time frame: 180、360 days
the occurence of death due to any cause
Time frame: 180、360 days
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