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Atrial Fibrillation and Congestive Heart Failure: should we aim to control the heart's rate or its rhythm?

Alessandro Capucci1

  • 1University of Ancona, Italy. alessandro.capucci@fastwebnet.it

Nature Clinical Practice. Cardiovascular Medicine
|October 30, 2008
PubMed

Insights

Treatment for atrial fibrillation and heart failure in patients with reduced ejection fraction shows prognosis is independent of rate or rhythm control. Other therapies significantly impact outcomes, guiding future research directions.

Area of Science:

  • Cardiology
  • Clinical Trials
  • Heart Failure Management

Background:

  • Atrial fibrillation (AF) and congestive heart failure (CHF) frequently coexist, impacting patient prognosis.
  • Reduced left ventricular ejection fraction (LVEF) is a common characteristic in patients with both AF and CHF.
  • Optimal management strategies for this complex patient population remain an area of active investigation.

Purpose of the Study:

  • To evaluate the prognostic impact of rate versus rhythm control strategies in patients with AF and reduced LVEF.
  • To identify other therapeutic interventions influencing prognosis in this cohort.
  • To assess the tolerability and efficacy of rate and rhythm control medications.

Main Methods:

  • The study involved patients diagnosed with both atrial fibrillation and congestive heart failure, specifically those with a reduced left ventricular ejection fraction.
  • Treatment strategies were compared based on targeting either heart rate control or heart rhythm control.
  • Data on the use of specific medications (beta-blockers, ACE inhibitors, ARBs, oral anticoagulants) and devices (ICDs) were collected and analyzed.

Main Results:

  • Prognosis was found to be independent of whether treatment focused on controlling the heart's rate or its rhythm.
  • Significant prognostic influence was observed with the use of beta-blockers, ACE inhibitors, ARBs, oral anticoagulants, and implantable cardioverter-defibrillators.
  • Antiarrhythmic drugs, particularly amiodarone, were well-tolerated, and adequate rate control was achieved using beta-blockers and digoxin.

Conclusions:

  • For patients with AF and reduced LVEF, the choice between rate and rhythm control does not significantly alter prognosis.
  • Concomitant therapies like beta-blockers, ACE inhibitors/ARBs, anticoagulants, and ICDs play a crucial role in determining patient outcomes.
  • Further research is warranted to elucidate the clinical significance of radiofrequency ablation for AF compared to traditional treatments.

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