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[Atrial fibrillation and heart failure: cause or effect?]
Sabino Scardi1, Carmine Mazzone
1Centro Cardiovascolare Azienda Sanitaria Triestina Via Farneto, 3 34100 Trieste. sabino.scardi@assl.sanita.fvg.it
Summary
Atrial fibrillation and heart failure are closely linked, with each condition exacerbating the other. For patients with heart failure, rate control may be more effective than rhythm control, especially those with left ventricular dysfunction.
Area of Science:
- Cardiology
- Electrophysiology
Context:
- Atrial fibrillation and heart failure share a bidirectional relationship, with each condition predisposing to and worsening the other.
- Hemodynamic overload and neurohumoral activation in heart failure can alter atrial electrophysiology, promoting atrial fibrillation.
- Atrial fibrillation contributes to heart failure progression through mechanisms like uncontrolled heart rate and loss of synchrony.
Purpose:
- To explore the complex interplay between atrial fibrillation and heart failure.
- To outline the mechanisms by which atrial fibrillation exacerbates heart failure.
- To discuss current treatment strategies for managing atrial fibrillation in heart failure patients.
Summary:
- Heart failure predisposes to atrial fibrillation, and atrial fibrillation worsens heart failure via multiple pathways including heart rate, synchrony, and neurohormonal effects.
- Treatment focuses on managing neurohormonal activation, preventing clots, maintaining sinus rhythm, and controlling ventricular rate.
- Recent trials suggest rate control may be superior to rhythm control in heart failure patients, particularly those with left ventricular dysfunction.
Impact:
- Understanding this association is crucial for optimizing patient management and improving outcomes.
- Highlights the importance of rate control strategies in heart failure patients with atrial fibrillation.
- Informs clinical decision-making regarding rhythm versus rate control in specific patient populations.