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Identifying and Managing Premature Ventricular Contraction-Induced Cardiomyopathy: What, Why, and How?

Wael A Alqarawi1, F Daniel Ramirez1, Pablo B Nery1

  • 1Arrhythmia Service, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.

The Canadian Journal of Cardiology
|October 7, 2016
PubMed

Insights

Premature ventricular contraction (PVC)-induced cardiomyopathy, a reversible cause of left ventricular systolic dysfunction, is managed by PVC suppression. Catheter ablation is increasingly used as a first-line therapy for effective PVC management and LVSD recovery.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Heart Failure Research

Background:

  • Premature ventricular contractions (PVCs) can cause left ventricular systolic dysfunction (LVSD).
  • PVC-induced cardiomyopathy is a recognized, reversible cause of LVSD.
  • Diagnosis involves high PVC burden (>10,000/24h) after excluding other causes.

Observation:

  • High PVC burdens can lead to LVSD.
  • Effective PVC suppression is crucial for management.
  • Catheter ablation offers potential for permanent PVC suppression.

Findings:

  • PVC suppression, via medical therapy or catheter ablation, is the primary treatment.
  • Catheter ablation is emerging as a first-line therapy.
  • Left ventricular systolic dysfunction typically recovers gradually over months post-PVC suppression.

Implications:

  • Early diagnosis and management of PVC-induced cardiomyopathy can reverse LVSD.
  • Catheter ablation is a promising therapeutic option.
  • Long-term monitoring of LV function is recommended for high-risk patients.

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