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Simultaneous pace-ablate during CARTO-guided pulmonary vein isolation with a contact-force sensing radiofrequency ablation catheter

Journal of Interventional Cardiac Electrophysiology volume 54, pages 119–124 (2019)Cite this article

Abstract

Purpose

Elimination of pace-capture along pulmonary vein isolation (PVI) lesion sets reduces atrial fibrillation (AF) recurrence in catheter ablation of paroxysmal AF. Pacing from the RF ablation electrode during RF application is prevented within the CARTO electroanatomic mapping system (Biosense Webster, Inc.) due to theoretical safety considerations. We evaluated a method of pacing the distal ablation electrode during RF application in the CARTO system, thus avoiding repeated activation and inactivation of the pacing channel and facilitating immediate recognition of pace-capture loss. We investigated the safety, feasibility, and utility of simultaneous pace-ablate (SPA) during AF ablation with the CARTO-3 system and a contact-force sensing RF ablation catheter.

Methods

Safety of feasibility of SPA was evaluated in 250 patients undergoing first-time AF ablation. Frequency and regional distribution of pace-capture following PVI was evaluated in a cohort of 50 consecutive patients undergoing catheter ablation of paroxysmal AF.

Results

SPA was successfully performed in all 250 patients without adverse event. At least one pace-capture site was noted in 22 of 50 PAF patients (44%), and pace-capture following PVI was most common at anterior and superior left atrial sites. There were 2.0 ± 3.3 RF applications during pacing via the distal ablation electrode per patient, and all lesions sets were successfully rendered unexcitable.

Conclusions

Pace-capture along the completed PVI lesion set remains common despite utilization of contact-force sensing RF ablation catheters and automated lesion annotation. Simultaneous pace-ablate in AF ablation using the CARTO system may be safely used to render atrial lesion sets unexcitable.

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Affiliations

  1. Leon H. Charney Division of Cardiology, New York University Langone Medical Center, 550 1st Avenue, New York, NY, 10016, USA

    Chirag R. Barbhaiya, Anthony Aizer, Robert Knotts, Scott Bernstein, David Park, Douglas Holmes & Larry A. Chinitz

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  1. Chirag R. Barbhaiya
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  2. Anthony Aizer
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  3. Robert Knotts
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  4. Scott Bernstein
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  5. David Park
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  6. Douglas Holmes
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  7. Larry A. Chinitz
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Correspondence to Chirag R. Barbhaiya.

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Barbhaiya, C.R., Aizer, A., Knotts, R. et al. Simultaneous pace-ablate during CARTO-guided pulmonary vein isolation with a contact-force sensing radiofrequency ablation catheter. J Interv Card Electrophysiol 54, 119–124 (2019). https://doi.org/10.1007/s10840-018-0455-7

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  • DOI: https://doi.org/10.1007/s10840-018-0455-7

Keywords

  • Atrial fibrillation
  • Catheter ablation
  • Contact-force sensing
  • Radiofrequency ablation
  • Pacing
  • Electroanatomic mapping