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Updated: May 3, 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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VT ablation: New Developments and Approaches.

Zhiyu Ling1, Adithya Hari, Harikrishna Tandri

  • 1Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.

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Summary

Catheter ablation is a key treatment for ventricular tachycardia (VT). Advances in technology and techniques have significantly improved success rates for VT ablation in patients with and without structural heart disease.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Technology

Background:

  • Catheter ablation is a crucial therapy for ventricular tachycardia (VT).
  • It's used as sole therapy for VT in patients without structural heart disease.
  • For patients with structural heart disease, it's typically for those experiencing ICD therapies or failing antiarrhythmic drugs.

Purpose of the Study:

  • To review recent advances in catheter ablation for VT.
  • To highlight novel technologies and techniques improving VT ablation outcomes.
  • To discuss substrate-based approaches in cardiomyopathies.

Main Methods:

  • Review of recent technological and technical innovations in VT ablation.
  • Discussion of percutaneous epicardial ablation, multielectrode mapping catheters, and intracardiac echocardiography (ICE).
  • Exploration of advanced mapping techniques (activation, entrainment) with mechanical circulatory support.

Main Results:

  • Significant improvements in understanding VT substrate in cardiomyopathies.
  • Enhanced success rates and overcoming limitations in VT ablation.
  • Development of targeted, substrate-based ablation strategies.

Conclusions:

  • Catheter ablation is an evolving and increasingly effective treatment for VT.
  • Technological and technical advancements are expanding its application and success.
  • Substrate-based approaches are crucial for complex VT ablation.