Overview
Embolic stroke occurs when a clot or other embolus travels through the bloodstream and blocks an artery supplying blood to the brain, leading to neurological deficits 23.Diagnosis
Clinical Presentation: Signs and symptoms of cerebral circulatory insufficiency (e.g., focal neurological deficits) 3.
Imaging: MRI or CT scans to identify infarcts and rule out other causes 3.
Echocardiography: Transthoracic echocardiography to detect potential cardiac sources like fibroelastomas 2.
Laboratory Tests: Blood tests to assess coagulation profile and inflammatory markers 3.Management
Acute Phase:
- Thrombolysis: Consider intravenous thrombolysis with alteplase if eligible (e.g., time window considerations) 3.
- Antiplatelet Therapy: Initiate aspirin or other antiplatelet agents post-stroke 3.
Secondary Prevention:
- Anticoagulation: For identified cardioembolic sources, anticoagulation with agents like warfarin or direct oral anticoagulants (DOACs) 3.
- Cardiac Source Management: Address underlying cardiac conditions (e.g., valve pathology) 2.Special Populations
Renal Transplant Recipients: Emergency surgical interventions like total aortic arch replacement with mild hypothermia and selective cerebral perfusion can be performed safely, minimizing infection risk 1.Key Recommendations
Identify and Treat Cardiac Sources: Aggressively investigate and manage potential cardiac sources of emboli, such as fibroelastomas, to prevent recurrent strokes (Evidence: Moderate 2).
Consider Selective Cerebral Perfusion in High-Risk Surgery: For patients undergoing complex aortic arch surgery, especially those with comorbidities like immunosuppression, selective cerebral perfusion can be effectively used to protect brain function (Evidence: Expert opinion 1).
Initiate Antiplatelet Therapy Post-Stroke: Start antiplatelet agents like aspirin following embolic stroke to reduce the risk of further embolic events (Evidence: Moderate 3).References
1 Toyama M, Kida N, Tamenishi A, Okamoto H. Emergency total aortic arch replacement for a renal transplant recipient by mild hypothermia with selective cerebral perfusion. General thoracic and cardiovascular surgery 2009. link
2 Hansen A, Oel W. Aortic valve fibroelastoma causing cerebral infarction. European journal of echocardiography : the journal of the Working Group on Echocardiography of the European Society of Cardiology 2008. link
3 Gittinger JW, Miller NR, Keltner JL, Burde RM. Branch artery occlusion in a young woman. Survey of ophthalmology 1985. link90089-x)