Pulsed-field- vs. cryoballoon-based pulmonary vein isolation: lessons from repeat procedures

Marc D Lemoine*, Julius Obergassel, Sandro Jaeckle, Moritz Nies, Sophia Taraba, Celine Mencke, Jan Rieß, Ilaria My, Laura Rottner, Fabian Moser, Djemail Ismaili, Bruno Reißmann, Feifan Ouyang, Paulus Kirchhof, Andreas Rillig, Andreas Metzner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Aims: Pulsed-field ablation (PFA) is an emerging technology to perform pulmonary vein isolation (PVI). Initial data demonstrated high safety and efficacy. Data on long-term PVI durability and reconduction patterns in comparison to established energy sources for PVI are scarce. We compare findings in repeat ablation procedures after a first PFA to findings in repeat ablation procedures after a first cryoballoon ablation (CBA) based PVI.

Methods and result: A total of 550 consecutively enrolled patients underwent PFA or CBA index PVI. Repeat ablations in patients with symptomatic atrial arrhythmia recurrences were analysed. A total of 22/191 (12%) patients after index PFA-PVI and 44/359 (12%) after CBA-PVI underwent repeat ablation. Reconduction of any pulmonary vein (PV) was detected by multipolar spiral mapping catheter at each PV with careful evaluation of PV potentials and by 3D-mapping in 16/22 patients (73%) after PFA-PVI and in 33/44 (75%) after CBA-PVI (P = 1.000). Of 82 initially isolated PVs after PFA-PVI, 31 (38%) were reconducting; of 169 isolated PVs after CBA-PVI, 63 (37%) were reconducting (P = 0.936). Clinical atrial tachycardia occurred similarly in patients after PFA (5/22; 23%) and CBA (7/44; 16%; P = 0.515). Roof lines were set more often after PFA- (8/22; 36%) compared with CBA-PVI (5/44; 11%; P = 0.023). Repeat procedure duration [PFA: 87 (76, 123) min; CBA: 93 (75, 128) min; P = 0.446] was similar and fluoroscopy time [PFA: 11 (9, 14) min; CBA: 11 (8, 14) min; P = 0.739] equal between groups at repeat ablation.

Conclusion: During repeat ablation after previous PFA- or CBA-based PVI, electrical PV-reconduction rates and patterns were similar.
Original languageEnglish
Article numbereuae221
JournalEuropace
Volume26
Issue number9
Early online date21 Aug 2024
DOIs
Publication statusPublished - Sept 2024

Keywords

  • Atrial fibrillation
  • Cryoballoon
  • Reisolation
  • Pulsed-field ablation
  • Pulmonary vein isolation
  • Reconduction
  • Repeat ablation
  • Atrial tachycardia

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