Multipolar Ablation Using Mapping Electrodes: A Novel Approach to Intramural Arrhythmia Substrates
Gilson C Fernandes1, Tri Nguyen2, Ekaterina Creed3
1Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston, Massachusetts, USA.
JACC. Clinical Electrophysiology
|February 8, 2023
Summary
This study explores a novel technique for treating intramural ventricular arrhythmias using multipolar ablation. It demonstrates the feasibility of creating transmural lesions for refractory arrhythmias.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Intramural ventricular arrhythmias present significant therapeutic challenges.
- Existing adjunctive treatments like bipolar ablation or ethanol injection are not always accessible.
- Refractory cases often require innovative approaches.
Observation:
- A case report details successful ablation of refractory intramural ventricular arrhythmia.
- The technique involved integrating mapping catheter electrodes into the ablation circuit.
- Ex vivo experiments analyzed multipolar ablation lesion characteristics with varying settings.
Findings:
- Multipolar ablation demonstrated the ability to generate transmural lesions.
- Ex vivo data provided insights into lesion properties under different ablation parameters.
- In vivo testing in a porcine model confirmed the feasibility of transmural lesion creation.
Implications:
- This novel multipolar ablation technique offers a potential new strategy for managing complex ventricular arrhythmias.
- The findings may lead to more accessible and effective treatment options.
- Further research could optimize multipolar ablation for clinical application in electrophysiology.
