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Aggressive risk factor reduction study for atrial fibrillation and implications for the outcome of ablation: the

Rajeev K Pathak1, Melissa E Middeldorp1, Dennis H Lau1

  • 1Centre for Heart Rhythm Disorders, South Australian Health and Medical Research Institute, University of Adelaide and Royal Adelaide Hospital, Adelaide, Australia.

Journal of the American College of Cardiology
|December 3, 2014
PubMed

Insights

Aggressive risk factor management (RFM) significantly improved long-term atrial fibrillation (AF) ablation success. Addressing cardiovascular risk factors is crucial for effective rhythm control strategies in AF patients.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Preventive Medicine

Background:

  • Long-term outcomes of atrial fibrillation (AF) ablation show a decline.
  • This attrition may stem from unaddressed cardiovascular risk factors that promote AF progression.
  • Optimizing AF ablation success requires managing the underlying substrate.

Purpose of the Study:

  • To assess the impact of risk factor management (RFM) and weight loss on AF ablation outcomes.
  • To determine if comprehensive RFM enhances long-term success after AF ablation.
  • To evaluate the role of lifestyle modifications in improving AF management.

Main Methods:

  • 281 patients undergoing AF ablation were studied.
  • 149 patients with obesity (BMI ≥27 kg/m²) and ≥1 cardiac risk factor were offered RFM.
  • 61 RFM patients and 88 controls were followed for 3-6 months with clinical assessments and Holter monitoring.

Main Results:

  • RFM group showed greater improvements in weight, blood pressure, glycemic control, and lipid profiles.
  • AF frequency, duration, and symptom severity significantly decreased in the RFM group.
  • Single and multiple-procedure arrhythmia-free survival was substantially higher in the RFM group (p < 0.001).

Conclusions:

  • Aggressive RFM significantly enhances long-term success rates of AF ablation.
  • Targeting primary promoters of the AF substrate is essential for effective rhythm control.
  • Integrating RFM into AF treatment strategies improves patient outcomes.
Abstract

Keywords:
cardiac risk factorscatheter ablationfollow-up studiesobesityoutcomes remodeling

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