Atrial fibrillation versus atrial myopathy in thrombogenesis: Two sides of the same coin?

Abstract

Atrial fibrillation (AF) and atrial myopathy are recognized contributors to cardiovascular morbidity, particularly ischemic stroke. AF poses an elevated risk of thrombogenesis due to irregular heart rhythm leading to blood stasis and clot formation. Atrial myopathy, marked by structural and functional alterations in the atria, is emerging as a crucial factor influencing thromboembolic events, independently of AF. This narrative review article provides an overview of the interwoven relationship between AF and atrial myopathy in thrombogenesis, focusing on the epidemiology, risk factors, and clinical implications of these two entities. The discussion encompasses the association between AF burden and stroke risk, evaluating current evidence and guidelines for anticoagulant therapy. Additionally, it explores the role of atrial myopathy in the pathogenesis of thromboembolic events, emphasizing the patient's clinical profile assessed by the CHA₂DS₂-VASc score. The manuscript provides insights into ongoing trials and future perspectives, discussing potential advancements in antithrombotic therapy, fibrin clot dynamics, and anti-inflammatory strategies. This comprehensive review challenges the conventional perception of AF as a sole cause of stroke, urging a holistic approach to risk assessment of thrombogenesis and management in the high-risk population that AF patients constitute.