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Related Concept Videos

Node Analysis for AC Circuits01:14

Node Analysis for AC Circuits

293
Consider an angioplasty system featuring a catheter equipped with a turbine, a critical tool for removing plaque deposits from coronary arteries. This intricate medical device operates using a circuit model reminiscent of a dual-node RLC circuit powered by a current-controlled voltage source.
To unravel the complexities of this system, nodal analysis is employed, a powerful technique founded on Kirchhoff's current law (KCL), which remains valid for phasors. AC circuits can effectively be...
293

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Related Experiment Video

Updated: Jun 9, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Methods and techniques to optimize energy delivery using the circular array pulsed field ablation catheter.

Stavros Mountantonakis1, Nicholas Beccarino1, Mark Abrams1

  • 1Northwell Cardiovascular Institute, Center for Arrhythmias, New Hyde Park, New York; Department of Cardiology, Division of Electrophysiology, Lenox Hill Hospital, New York, New York.

Heart Rhythm
|October 25, 2024
PubMed
Summary
This summary is machine-generated.

Pulsed field ablation (PFA) offers a safer alternative for cardiac ablation, targeting only heart cells. This study shares real-world experiences to optimize PFA procedures for better patient outcomes.

Keywords:
Ablation strategyAtrial fibrillationIntracardiac echocardiographyLesion optimizationPulsed field ablation

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Area of Science:

  • Cardiovascular Medicine
  • Electrophysiology
  • Medical Devices

Background:

  • Pulsed field ablation (PFA) uses electrical fields to induce cardiomyocyte death, offering tissue selectivity over thermal methods.
  • PFA reduces risks of collateral damage to adjacent structures like the esophagus and phrenic nerve.
  • Current PFA systems lack contact force sensing, and optimal workflow for durable lesion creation is not established.

Purpose of the Study:

  • To present real-world clinical experience with the PulseSelect PFA system.
  • To propose techniques for integrating imaging modalities to enhance PFA procedure efficacy.
  • To establish best practices for achieving optimal and predictable lesion delivery with PFA.

Main Methods:

  • Retrospective analysis of PFA procedures across multiple international centers.
  • Integration of fluoroscopy, electroanatomic mapping, and intracardiac echocardiography.
  • Development of procedural techniques to optimize lesion formation and predictability.

Main Results:

  • Real-world data from the United States, Europe, and Japan were analyzed.
  • Techniques for incorporating imaging guidance were successfully applied.
  • Proposed methods aim to improve lesion delivery and procedural predictability in PFA.

Conclusions:

  • PFA is a promising modality for atrial fibrillation ablation with improved safety profile.
  • Integrating imaging and mapping technologies is crucial for optimizing PFA procedures.
  • Standardized workflows and best practices are needed to maximize PFA efficacy and safety.