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Atrial cardiopathy: a mechanism of cryptogenic stroke
Shadi Yaghi1, Hooman Kamel2, Mitchell S V Elkind3,4
1a Department of Neurology, Division of Stroke and Cerebrovascular Diseases , The Warren Alpert Medical School of Brown University , Providence , RI , USA.
Insights
Atrial cardiopathy, identified by specific biomarkers, is linked to cryptogenic stroke. Further research is needed to clarify its role and optimize stroke prevention strategies.
Area of Science:
- Cardiology
- Neurology
- Biomarkers
Background:
- Cryptogenic stroke constitutes 30% of ischemic strokes.
- Atrial cardiopathy, diagnosed via serum, imaging, or ECG biomarkers, is associated with ischemic stroke, especially embolic subtypes.
- Inflammation and fibrosis are proposed mechanisms of stroke in atrial cardiopathy.
Purpose of the Study:
- Summarize data on occult atrial fibrillation and stroke.
- Provide an overview of stroke mechanisms in atrial cardiopathy.
- Critically review atrial cardiopathy biomarkers and their stroke association.
- Suggest therapeutic implications and future research directions.
Main Methods:
- Literature review and data synthesis on atrial cardiopathy and stroke.
- Analysis of proposed pathophysiological mechanisms (inflammation, fibrosis).
- Critical evaluation of existing biomarkers for atrial cardiopathy.
- Discussion of therapeutic strategies and clinical trial needs.
Main Results:
- Atrial cardiopathy may be a significant mechanism underlying cryptogenic stroke.
- Biomarkers of atrial cardiopathy show association with stroke risk.
- Patients with atrial cardiopathy may benefit from targeted clinical trials.
Conclusions:
- Atrial cardiopathy represents a potential mechanism for cryptogenic stroke.
- Clinical trials comparing anticoagulation and antiplatelet therapy are warranted in patients with atrial cardiopathy.
- Further research is essential to identify the most predictive biomarkers for stroke risk and treatment response.
Introduction:
Cryptogenic stroke accounts for approximately 30% of all ischemic strokes. Recently, atrial cardiopathy diagnosed by the presence of one of its serum, imaging, or electrocardiogram biomarkers has been shown to be associated with ischemic stroke, particularly of embolic subtypes. Areas covered: This paper aims to summarize data on occult atrial fibrillation and stroke, provide an overview on mechanisms, such as inflammation and fibrosis, of stroke in atrial cardiopathy, critically review data on biomarkers of atrial cardiopathy and their association with stroke, and suggest therapeutic implications, including directions for future research. Expert commentary: Atrial cardiopathy may constitute one of the mechanisms in cryptogenic stroke, and patients with evidence of atrial cardiopathy constitute a group of patients in whom clinical trials are warranted to test anticoagulation versus antiplatelet therapy to reduce stroke recurrence risk. In addition, more studies are needed to determine the degree of overlap between these atrial cardiopathy biomarkers and which one is more useful in predicting the risk of stroke and response to anticoagulation therapy.
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