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Updated: Mar 25, 2026

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

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Unusual Outflow Tract Ventricular Tachycardia

Kara S Motonaga1, Scott R Ceresnak1, Henry H Hsia2

  • 1Department of Pediatrics, Division of Pediatric Cardiology, Stanford University, Palo Alto, CA, USA.

Cardiac Electrophysiology Clinics
|February 28, 2016
PubMed

Insights

Differentiating ventricular tachycardia originating from the right or left outflow tract is challenging. A detailed anatomical understanding and advanced imaging, like intracardiac echocardiography, improve procedural success and patient safety.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Imaging

Background:

  • Distinguishing premature ventricular contractions/ventricular tachycardia (PVCs/VT) originating from the right ventricular outflow tract (RVOT) versus the left ventricular outflow tract (LVOT) is clinically significant.
  • Electrocardiogram (ECG) findings alone can be insufficient for accurate localization, posing diagnostic challenges.

Observation:

  • A systematic and meticulous approach to mapping the ventricular outflow regions and great vessels is crucial.
  • Understanding outflow tract anatomy is key to increasing procedural success rates.

Findings:

  • Multimodality imaging, especially real-time intracardiac echocardiography (ICE), is essential for precise anatomical definition.
  • ICE guidance aids in ensuring adequate catheter contact during electrophysiology procedures.

Implications:

  • Utilizing advanced imaging techniques like ICE can decrease the risk of damage to adjacent structures and the conduction system.
  • Improved anatomical understanding and mapping strategies enhance the safety and efficacy of PVC/VT ablation procedures.

Keywords:
HeartOutflow tractVentricular arrhythmiaVentricular tachycardia

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