Do Mapping Strategies Influence Outcomes in Ventricular Tachycardia Ablation?

Research output: Chapter in Book/Report/Conference proceedingChapter


Ventricular tachycardia (VT) activation and entrainment mapping require reproducible arrhythmia inducibility, hemodynamic tolerance and stable VT morphology; those characteristics are present only in a minority of patients. A long stimulus-QRS interval during pacemapping suggests a local conduction delay and is predictive of successful VT ablation. Substrate mapping relies upon the information obtained during baseline rhythm to guide catheter ablation of VTs; it has the primary aim of reducing or eliminating the need of arrhythmia induction. Late potentials (LPs) are usually found in surviving myocardial areas in the context of scar tissue. The strategy of LP mapping and complete elimination provides an objective measure of substrate modification; it can be useful in patients without 12-lead ECG documentation of the VT and in those with no inducible VT. This edition first published 2013

Original languageEnglish
Title of host publicationCardiac Mapping: Fourth Edition
Number of pages9
ISBN (Print)9780470670460
Publication statusPublished - Dec 18 2012


  • Ablation
  • Activation mapping
  • Electroanatomical mapping
  • Entrainment
  • Late potentials
  • Multi-electrode array
  • Non-contact mapping
  • Pacemapping
  • Substrate mapping
  • Ventricular tachycardia

ASJC Scopus subject areas

  • Medicine(all)


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