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Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
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Frequent Ventricular Ectopy: Implications and Outcomes.

Adam Lee1, Tomos E Walters2, Edward P Gerstenfeld2

  • 1Department of Cardiology, The Prince Charles Hospital, Brisbane, Qld, Australia; Faculty of Medicine, University of Queensland, Brisbane, Qld, Australia; Section of Cardiac Electrophysiology, Division of Cardiology, Department of Medicine, University of California San Francisco, CA, USA.

Heart, Lung & Circulation
|October 17, 2018
PubMed
Summary
This summary is machine-generated.

Frequent ventricular ectopy, often from idiopathic ventricular outflow tract arrhythmias, can be effectively treated with catheter ablation. This procedure offers a potentially curative option for patients, especially those at risk of cardiomyopathy.

Keywords:
Catheter ablationEctopy mediated cardiomyopathyPremature ventricular complexVentricular ectopy

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Arrhythmology

Background:

  • Idiopathic ventricular outflow tract arrhythmias present as frequent ventricular ectopy.
  • These focal arrhythmias typically occur in patients without structural heart disease.
  • They often originate from specific anatomic sites and are linked to cyclic adenosine monophosphate (cAMP)-mediated triggered activity.

Purpose of the Study:

  • To review the mechanisms, clinical presentation, and treatment options for idiopathic ventricular outflow tract arrhythmias.
  • To evaluate the efficacy and safety of catheter ablation compared to medical therapy.
  • To highlight the role of catheter ablation in preventing adverse outcomes like cardiomyopathy.

Main Methods:

  • Review of existing literature on ventricular ectopy and outflow tract arrhythmias.
  • Analysis of treatment strategies including clinical surveillance, anti-arrhythmic drugs, and catheter ablation.
  • Discussion of contemporary mapping techniques in catheter ablation.

Main Results:

  • Medical therapy can reduce ectopy burden but rarely eradicates it and may cause side-effects.
  • Catheter ablation, despite procedural risks, is a safe and potentially curative treatment.
  • Ablation is the preferred treatment for patients at risk of ectopy-mediated cardiomyopathy or polymorphic ventricular arrhythmias.

Conclusions:

  • Idiopathic ventricular outflow tract arrhythmias are mechanistically linked to cAMP-mediated triggered activity.
  • Catheter ablation represents a potentially curative and safe treatment option for frequent ventricular ectopy.
  • Early consideration of ablation is crucial for patients at risk of developing ventricular dysfunction or more severe arrhythmias.