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Published on: April 23, 2021
Cerebral microbleeds and functional outcomes after ischemic stroke
Tae-Won Kim1, Seung-Jae Lee2, Jaseong Koo1
11Department of Neurology,College of Medicine,Catholic University of Korea,Seoul,Korea.
Background:
Whether an association exists between cerebral microbleeds (CMBs) and functional recovery after ischemic stroke is unclear. We aimed to evaluate the association between CMBs and functional outcome after acute ischemic stroke.
Methods:
Consecutive patients with acute stroke were enrolled, and all patients were stratified into good and poor functional outcome groups at discharge and 6 months after ischemic stroke by using a modified Rankin Scale score. Cardiovascular risk factors, CMBs, and white matter hyperintensities were compared between these two outcome groups. Logistic regression analysis was used to estimate the risk of poor functional outcomes.
Results:
A total of 225 patients were enrolled, 121 of whom were classified as having a good functional outcome at discharge and 142 as having a good 6-month functional outcome. The presence of CMBs was associated with a poor functional outcome at discharge [CMBs (+) patients in poor vs. good functional group; 48.1% vs. 30.6%; p=0.007] and 6 months [53.0% vs. 30.3%; p=0.001]. After adjustment for confounding factors, only the presence of infratentorial CMBs was associated with a poor functional outcome at discharge and 6 months. The poor functional outcome group had more CMBs than the good outcome group at 6 months.
Conclusions:
Infratentorial cerebral microbleeds were significantly associated with worse functional outcomes not only in the early phase of ischemic stroke but also in the chronic phase. These findings suggest that the presence of infratentorial CMBs can predict poor functional outcome after acute ischemic stroke.
Insights
Infratentorial cerebral microbleeds (CMBs) are linked to worse functional recovery after ischemic stroke, both early and long-term. The presence of these CMBs can predict poor outcomes.
Area of Science:
- Neurology
- Neuroimaging
- Stroke Medicine
Background:
- The relationship between cerebral microbleeds (CMBs) and functional recovery post-ischemic stroke remains unclear.
- Understanding this association is crucial for predicting patient outcomes.
Purpose of the Study:
- To investigate the association between CMBs and functional outcomes after acute ischemic stroke.
- To determine if CMBs can predict long-term functional recovery.
Main Methods:
- Patients with acute ischemic stroke were categorized into good and poor functional outcome groups.
- Modified Rankin Scale scores were used for outcome assessment at discharge and 6 months.
- Logistic regression analysis identified predictors of poor functional outcomes, including CMBs and white matter hyperintensities.
Main Results:
- Cerebral microbleeds (CMBs) were associated with poor functional outcomes at discharge and 6 months post-stroke.
- Infratentorial CMBs specifically predicted worse functional outcomes in both early and chronic phases.
- Patients with poor functional outcomes exhibited a higher burden of CMBs at 6 months.
Conclusions:
- Infratentorial CMBs are significant predictors of worse functional outcomes after acute ischemic stroke.
- These findings highlight the prognostic value of infratentorial CMBs for both short-term and long-term recovery.
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