[Bidirectional relationship between atrial fibrillation and stroke.]

Area of Science:

• Cardiology
• Neurology
• Epidemiology

Background:

• The traditional view posits a one-way relationship where atrial fibrillation (AF) leads to stroke.
• Emerging research suggests a potential bidirectional association between AF and cerebrovascular events.
• Atrial cardiomyopathy is identified as a common underlying substrate for both conditions.

Purpose of the Study:

• To explore the bidirectional relationship between atrial fibrillation and stroke.
• To emphasize the importance of identifying and managing shared risk factors.
• To highlight the role of prolonged cardiac monitoring in detecting AF post-stroke.

Main Methods:

• Review of recent studies investigating the AF-stroke association.
• Analysis of etiological pathways, including stasis and atrial cardiomyopathy.
• Discussion of diagnostic strategies, such as prolonged cardiac monitoring.

Main Results:

• Evidence suggests that stroke can also precipitate AF, challenging the one-way model.
• Atrial cardiomyopathy serves as a common pathophysiological link.
• AF is recognized as both a cause and a marker of thromboembolic risk.

Conclusions:

• The relationship between AF and stroke is likely bidirectional.
• Aggressive management of common risk factors is crucial for improving patient outcomes.
• Integrated management strategies are needed to address AF, stroke, heart failure, and mortality.