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Updated: Jun 1, 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

Electrocardiographic and electrophysiologic characteristics of ventricular extrasystoles arising from the aortomitral

Konstantinos P Letsas1, Michael Efremidis, George Kollias

  • 1Laboratory of Invasive Cardiac Electrophysiology, Evangelismos General Hospital of Athens, 10676 Athens, Greece.

Cardiology Research and Practice
|June 4, 2011
PubMed

Insights

Arrhythmias from the left ventricular outflow tract share similar features due to their proximity. Catheter ablation for these challenging heart rhythm issues requires careful consideration.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Imaging

Background:

  • Left ventricular outflow tract (LVOT) arrhythmias are common and can originate from specific anatomical regions.
  • These regions include the aortomitral continuity, left coronary cusp, superior basal septum, and epicardial left ventricular summit.
  • The close anatomical proximity of these sites likely contributes to shared electrocardiographic and electrophysiological characteristics.

Observation:

  • A case study of a 68-year-old male presenting with frequent premature ventricular extrasystoles is detailed.
  • The arrhythmias were observed to originate from the aortomitral continuity of the basal left ventricle.
  • Electrocardiographic and electrophysiologic mapping were utilized for diagnosis.

Findings:

  • Premature ventricular extrasystoles from the aortomitral continuity exhibit distinct electrocardiographic patterns.
  • Electrophysiological studies confirmed the arrhythmogenic substrate in the basal LVOT.
  • Shared features among LVOT arrhythmias suggest a common underlying mechanism or pathway.

Implications:

  • Understanding the commonalities in LVOT arrhythmias aids in diagnosis and treatment planning.
  • Catheter ablation for these specific arrhythmias can be technically demanding.
  • Further research into targeted ablation strategies for aortomitral continuity ectopy is warranted.

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