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Subclinical and Asymptomatic Atrial Fibrillation: Current Evidence and Unsolved Questions in Clinical Practice

Andrea Ballatore1, Mario Matta2, Andrea Saglietto1

  • 1Division of Cardiology, "Città della Salute e della Scienza di Torino" Hospital, Department of Medical Sciences, University of Turin, 10126 Turin, Italy.

Medicina (Kaunas, Lithuania)
|August 21, 2019
PubMed

Insights

This review examines treatments for asymptomatic atrial fibrillation (AF). While anticoagulation improves prognosis, rhythm control benefits quality of life, with catheter ablation showing observational promise but lacking randomized trial confirmation.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Research

Background:

  • Atrial Fibrillation (AF) diagnosis varies from symptomatic presentation to incidental electrocardiogram (ECG) findings or asymptomatic detection via implanted devices.
  • Anticoagulation therapy significantly improves prognosis based on individual risk profiles.
  • Rhythm control strategies primarily enhance quality of life for AF patients.

Purpose of the Study:

  • To review current evidence on treating subclinical and asymptomatic AF.
  • To discuss the potential advantages of rhythm control therapies in this patient group.
  • To identify and address existing uncertainties in the management of asymptomatic AF.

Main Methods:

  • Literature review of observational data and randomized trials.
  • Analysis of treatment outcomes for atrial fibrillation.
  • Synthesis of evidence regarding anticoagulation and rhythm control strategies.

Main Results:

  • Observational data suggest AF catheter ablation offers benefits in mortality, stroke incidence, and cognitive impairment prevention compared to medical treatment.
  • Randomized trials have not consistently confirmed these observational findings for catheter ablation.
  • Anticoagulation demonstrates clear prognostic benefits, while rhythm control impacts quality of life.

Conclusions:

  • The management of asymptomatic and subclinical AF requires further clarification, particularly regarding the role of rhythm control therapies.
  • Discrepancies between observational data and randomized trials for catheter ablation highlight areas needing further investigation.
  • Balancing prognostic benefits of anticoagulation with quality-of-life improvements from rhythm control is key in AF management.

Keywords:
catheter ablationcognitive impairmentischemic cerebral eventsscreeningstrokesubclinical atrial fibrillation

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