Related Experiment Video

Updated: Jun 12, 2026

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
06:57

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

Ablation of idiopathic ventricular tachycardia

Doreen Schreiber1, Hans Kottkamp

  • 1Department of Electrophysiology, Clinic Hirslanden - Heart Center, Witellikerstrasse 40, CH - 8032, Zurich, Switzerland. doreen.schreiber@hirslanden.ch

Current Cardiology Reports
|June 8, 2010
PubMed

Insights

Idiopathic ventricular arrhythmias, often originating from the outflow tract or left ventricle, are successfully treated with ablation. New sources like papillary muscles and AV annular regions are also identified.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Arrhythmias

Background:

  • Idiopathic ventricular arrhythmias (IVAs) occur in individuals without underlying heart disease.
  • These arrhythmias can originate from various cardiac regions, including the ventricles and great arteries.
  • Key distinctions exist between outflow tract (OT) arrhythmias and idiopathic left ventricular tachycardias (ILVTs).

Purpose of the Study:

  • To differentiate between major types of idiopathic ventricular arrhythmias.
  • To detail the anatomical origins and mapping techniques for these arrhythmias.
  • To highlight the efficacy and safety of ablation for IVAs.

Main Methods:

  • Activation mapping and pace mapping for outflow tract arrhythmias.
  • Mapping of diastolic potentials for idiopathic left ventricular tachycardias.
  • Identification of novel arrhythmia origins, including papillary muscles and atrioventricular annular regions.

Main Results:

  • Outflow tract tachycardia commonly arises from the right ventricular OT but can also occur in the left ventricular OT.
  • Idiopathic left ventricular tachycardias have distinct electrophysiological characteristics.
  • Ablation demonstrates high success rates with minimal complications for IVAs.
  • Papillary muscles and atrioventricular annular regions are newly recognized sources of IVAs.

Conclusions:

  • Idiopathic ventricular arrhythmias are diverse, with distinct origins and mapping strategies.
  • Catheter ablation is a highly effective treatment for these arrhythmias.
  • Ongoing research continues to identify new sources of idiopathic ventricular tachycardias.

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