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The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Insights
Patients with cardiac conditions like atrial fibrillation may benefit from anticoagulants after a stroke. CT scans help determine if anticoagulation is appropriate for secondary stroke prevention in these high-risk individuals.
Area of Science:
- Cardiology
- Neurology
- Radiology
Background:
- Patients with specific cardiac lesions face a high risk of cerebral emboli.
- Conditions include atrial fibrillation, rheumatic mitral valve disease, myocardial infarction, prosthetic heart valves, and dilated cardiomyopathy.
- Anticoagulants can prevent cerebral infarction in many high-risk patients.
Purpose of the Study:
- To evaluate the role of CT scans in guiding anticoagulation therapy after a cardiac embolic stroke.
- To determine optimal timing and patient selection for anticoagulation in secondary stroke prevention.
Main Methods:
- Review of CT scans and cerebrovascular pathology in patients with clinical stroke.
- Analysis of patient data to correlate imaging findings with anticoagulation decisions.
Main Results:
- CT scans are crucial for deciding on anticoagulation post-cardiac embolic stroke.
- Cerebral infarct, identified via CT, is more informative than arterial occlusion for treatment decisions.
- Findings guide the timing and consideration of anticoagulants for secondary prevention.
Conclusions:
- CT imaging findings, specifically cerebral infarcts, are key to managing anticoagulation for secondary stroke prevention in patients with cardiac embolic sources.
- This approach optimizes treatment decisions for patients at risk of recurrent embolic events.
Abstract:
Cardiac lesions among those at high risk of cerebral emboli include: atrial fibrillation, rheumatic mitral valve disease, acute myocardial infarction, prosthetic heart valves, and idiopathic dilated cardiomyopathy. Many of these patients can be protected from cerebral infarction by anticoagulants. Following a cardiac embolic stroke, CT scans are critical in deciding for whom and at what time anticoagulation should be considered. From studies of CT and cerebrovascular pathology, it has become clear that it is the cerebral infarct rather than the arterial occlusion that provides the key piece of information in deciding whether and when anticoagulants should be considered for the secondary prevention of cardiac emboli among patients who present with a clinical stroke.
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