Substrate Mapping in Ventricular Arrhythmias

Research output: Contribution to journalReview articlepeer-review

2 Scopus citations

Abstract

Ventricular tachycardia is typically hemodynamically unstable. Strategies to target the arrhythmogenic substrate during sinus rhythm are essential for therapeutic ablation. Electroanatomic mapping is the cornerstone of substrate-based strategies; ablation can be directed within a delineated scar region defined by low voltage. Bipolar voltage mapping has inherent limitations. Specific electrogram characteristics may improve the specificity of localizing the most arrhythmogenic regions within the substrate. Deceleration zones during sinus rhythm are niduses for reentry and can be identified by isochronal late activation mapping, which is a functional analysis of substrate propagation with local annotation to electrogram offset.

Original languageEnglish (US)
Pages (from-to)657-663
Number of pages7
JournalCardiac Electrophysiology Clinics
Volume11
Issue number4
DOIs
StatePublished - Dec 2019
Externally publishedYes

Keywords

  • Bipolar
  • Electroanatomic mapping
  • Electrograms
  • Isochronal
  • Ventricular tachycardia
  • Voltage mapping

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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