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Cardioembolic stroke, early anticoagulation, and brain hemorrhage. Cerebral Embolism Study Group
Insights
Early anticoagulation after cardioembolic stroke can cause brain hemorrhage. Large infarct size and early CT scans (under 12 hours) increase this risk, leading to worsening symptoms.
Area of Science:
- Neurology
- Neurosurgery
- Cardiology
Background:
- Anticoagulation therapy is crucial for preventing recurrent embolism in cardioembolic stroke.
- Hemorrhagic transformation (HT) is a known complication, particularly with early treatment.
- Identifying predictive factors for HT is essential for optimizing patient management.
Observation:
- Nine patients with cardioembolic stroke experienced clinical deterioration linked to computed tomography-documented hemorrhagic transformation.
- Analysis included these nine patients and 15 previously reported cases.
Findings:
- Large infarct size was significantly associated with hemorrhagic transformation and clinical worsening.
- Initiation of anticoagulation therapy within 12 hours of early computed tomography also correlated with increased risk of hemorrhagic transformation and clinical deterioration.
- Patient age, embolic source, and anticoagulation intensity did not show a significant association with hemorrhagic worsening.
Implications:
- Early anticoagulation in cardioembolic stroke patients requires careful consideration, especially in those with large infarcts.
- Timing of anticoagulation initiation relative to early computed tomography (within 12 hours) is a critical factor influencing hemorrhagic transformation risk.
- Risk stratification based on infarct size and imaging timing may help personalize anticoagulation strategies to mitigate hemorrhagic complications.
Abstract:
Brain hemorrhage is a feared complication of early anticoagulation therapy in patients with cardioembolic brain infarction. We describe nine patients with cardioembolic stroke who experienced clinical deterioration associated with computed tomography-documented hemorrhagic transformation. The clinical features of these nine patients combined with 15 previously reported cases were analyzed to determine factors associated with hemorrhagic worsening. Patient age, embolic source, and intensity of anticoagulation were not associated with hemorrhagic worsening. Large infarct size and initiation of anticoagulation after early (less than 12 hours) computed tomography were associated with hemorrhagic transformation and clinical worsening in patients who received anticoagulation therapy.