Abstract
Background
Several novel technologies allowing catheter ablation (CA) with a favorable safety/efficacy profile have been recently developed, but not yet extensively clinically tested in the setting of ventricular tachycardia CA.
Methods
In this technical report, we overview technical aspects and preclinical/clinical information concerning the application of three novel CA technologies in the ventricular milieu: a pulsed field ablation (PFA) generator (CENTAURI™, Galaxy Medical) to be used with linear, contact force-sensing radiofrequency ablation catheters; a contact force-sensing radiofrequency ablation catheter equipped with six thermocouples and three microelectrodes (QDOT Micro™, Biosense-Webster), allowing high-resolution mapping and temperature-controlled CA; and a flexible and mesh-shaped irrigation tip, contact force-sensing radiofrequency ablation catheter (Tactiflex, Abbott). We also report three challenging VT cases in which CA was performed using these technologies.
Results
The CENTAURI system was used with the Tacticath™ (Abbott) ablation catheter to perform ventricular PFA in a patient with advanced heart failure, electrical storm, and a deep intramural septal substrate. Microelectrode mapping using QDOT Micro™ helped to refine substrate assessment in a VT patient with congenitally corrected transposition of the great arteries, and allowed the identification of the critical components of the VT circuit, which were successfully ablated. Tactiflex™ was used in two challenging CA cases (one endocardial and one epicardial), allowing acute and mid-term control of VT episodes without adverse events.
Conclusion
The ideation and development of novel technologies initially intended to treat atrial arrhythmias and successfully implemented in the ventricular milieu is contributing to the progressive improvement in the clinical benefits derived from VT CA, making this procedure key for successful management of increasingly complex patients.
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Data availability
The data that support the findings of this study are available on request from the corresponding author, PC.
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Acknowledgements
Michela Colonnelli, BE; Giulia Santarelli, BE; Valentina La Piscopia, BE; and Barbara Bondavalli, BE, for help in the preparation of images.
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A.D.R. is a consultant for Abbott Medical. A.N. is a consultant for Biosense Webster, Stereotaxis, and Abbott, and has received speaker honoraria/travel from Medtronic, Atricure, Biotronik, and Janssen. All other authors declared no conflict of interest.
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Compagnucci, P., Valeri, Y., Conti, S. et al. Technological advances in ventricular tachycardia catheter ablation: the relentless quest for novel solutions to old problems. J Interv Card Electrophysiol (2023). https://doi.org/10.1007/s10840-023-01705-7
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DOI: https://doi.org/10.1007/s10840-023-01705-7