Related Experiment Video

Updated: Jun 13, 2025

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

14.6K

Premature ventricular contraction arising from the left coronary sinus cusp: Which signal is the target of ablation?

Takashi Nakashima1, Masaru Nagase2, Shigekiyo Takahashi2

  • 1Department of Cardiology, Central Japan International Medical Center, Gifu, Japan; Department of Cardiology, Graduate School of Medicine, Gifu University, Gifu, Japan.

Indian Pacing and Electrophysiology Journal
|September 11, 2024
PubMed

Insights

This study details a premature ventricular contraction originating from the left coronary sinus cusp. It offers new understanding for interpreting signals during ablation procedures for this heart rhythm disorder.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Imaging

Background:

  • Premature ventricular contractions (PVCs) can originate from various cardiac locations.
  • The coronary sinus cusp is an uncommon but significant source of PVCs.
  • Accurate signal interpretation is crucial for successful ablation therapy.

Purpose of the Study:

  • To describe a case of PVC originating from the left coronary sinus cusp.
  • To analyze and interpret the electrophysiological signals recorded at the coronary sinus cusp during this PVC.
  • To enhance understanding of signal characteristics for guiding ablation.

Main Methods:

  • Intracardiac electrophysiological recordings.
  • Signal analysis during spontaneous and induced PVCs.
  • Catheter ablation guided by electrophysiological mapping.

Main Results:

  • A PVC originating from the left coronary sinus cusp was identified and mapped.
  • Distinct signal morphologies and timings were observed at the coronary sinus cusp during the PVC.
  • Successful ablation was achieved at the origin of the PVC.

Conclusions:

  • The left coronary sinus cusp can be a challenging but treatable source of PVCs.
  • Detailed analysis of coronary sinus cusp signals is vital for precise localization.
  • This case contributes to the body of knowledge for interpreting signals during PVC ablation.

Keywords:
ArtifactCoronary sinus cuspPremature ventricular contractionRadiofrequency catheter ablation

More Related Videos

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

10.4K
Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation28:13

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

Published on: February 26, 2013

33.4K

Related Concept Videos

Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
2.3K
Conduction System of the Heart01:20

Conduction System of the Heart

The cardiac conduction system produces and transmits electrical impulses that prompt myocardial contraction, ensuring efficient heart function. This intricate system ensures that the heart beats in a coordinated and efficient manner, beginning with the atria and then the ventricles. The conduction system optimizes cardiac output by maintaining this precise sequence, which is crucial for adequate blood circulation.
This system relies on the unique properties of nodal and Purkinje cells:...
853
Cardiac Action Potential01:30

Cardiac Action Potential

Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
1.1K