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Atrial Cardiopathy: Redefining Stroke Risk Beyond Atrial Fibrillation
Jessica Chu Zhang1, Aditya Bhat2
1Department of Cardiology, Blacktown Hospital, Sydney, New South Wales, Australia; School of Medicine, Western Sydney University, Sydney, New South Wales, Australia.
Insights
Atrial fibrillation and ischemic stroke risk can be better predicted by assessing atrial cardiopathy, a prothrombotic atrial substrate. This may allow earlier intervention before stroke develops.
Area of Science:
- Cardiology
- Neurology
- Thrombosis
Background:
- Atrial fibrillation (AF) and ischemic stroke are prevalent conditions with significant health impacts.
- Current risk scores (CHADS2, CHA2DS2-VASc) for stroke in AF patients have limitations.
- Emerging evidence points to a prothrombotic atrial substrate preceding AF and stroke.
Purpose of the Study:
- To review current evidence on atrial cardiopathy measures for stroke risk stratification in AF.
- To explore the potential of atrial cardiopathy in improving stroke prediction and management.
Main Methods:
- Narrative review of existing literature.
- Analysis of studies investigating atrial cardiopathy parameters.
- Evaluation of their incremental value over traditional risk scores.
Main Results:
- Atrial cardiopathy may precede AF and contribute to thromboembolic events independently of the arrhythmia.
- Incorporating atrial cardiopathy measures may enhance traditional stroke risk stratification.
- Prospective studies are needed to validate these findings for clinical practice.
Conclusions:
- Atrial cardiopathy represents a potential target for improved stroke risk stratification in AF patients.
- Further research is warranted to integrate these measures into clinical decision-making.
- Early identification of atrial cardiopathy could lead to timely interventions and better patient outcomes.
Abstract:
Atrial fibrillation (AF) and ischemic stroke are dual epidemics in society, both associated with poor clinical outcomes, patient disability, and significant healthcare expenditure. The conditions are interrelated and share complex causal pathways. Risk stratification algorithms such as the CHADS2 and CHA2DS2-VASc score offer predictive value in stroke and systemic embolism risk in the AF population, however, have limitations. Recent evidence suggests that an intrinsically prothrombotic atrial substrate may precede and promote AF and lead to thromboembolic events independent of the arrhythmia, allowing for a window of intervention before arrhythmia detection and development of ischemic stroke. Initial work has found incremental value in addition of parameters of atrial cardiopathy to traditional stroke risk stratification algorithms, however, requires evaluation with dedicated prospective randomized studies before use in real-world clinical practice. In this narrative review, we explore current evidence and literature on the use of measures of atrial cardiopathy in stroke risk stratification and management.
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