Why the study?
Evolution of procedure and fluoroscopy times as learning curve surrogates are often analyzed per center rather than per individual operator, leaving comparative individual learning curves between pulsed field ablation and cryoballoon ablation uncharacterized.
Does pulsed field ablation using the pentaspline catheter improve learning curves and reduce procedure times compared to cryoballoon ablation for pulmonary vein isolation?
Does pulsed field ablation using the pentaspline catheter improve learning curves and reduce procedure times compared to cryoballoon ablation for pulmonary vein isolation?
Pulsed field ablation using a pentaspline catheter is associated with significantly shorter procedure times and a faster learning curve for new operators compared to cryoballoon ablation for pulmonary vein isolation.
Answers are grounded in this paper and cite their sources.
May shorten PVI times for new operators; leaves open randomized confirmation versus cryoballoon.
Background Single-shot devices for pulmonary vein isolation (PVI) are commonly used for atrial fibrillation ablation. Evolution of procedure and fluoroscopy times as a surrogate for learning curves are often analyzed per center and not per individual operator. We compared individual operator learning curves for pulsed field ablation (PFA) using the pentaspline catheter versus cryoballoon ablation. Methods We analyzed consecutive PVI procedures performed by operators starting their experience with single-shot devices. Only operators who started their single shot PVI experience at our center and who now have performed at least 50 procedures with both compared technologies were included. A total of 346 PFA and 517 cryoballoon procedures performed by 5 different operators were analyzed. Evolution of procedure and fluoroscopy times was assessed and segmented linear regression was used to estimate learning cutoffs. Results Mean procedure and fluoroscopy times were shorter with PFA than with cryoballoon: 36.5 vs. 56 minutes (procedure) and 9.33 vs. 10.6 minutes (fluoroscopy). Segmented regression indicated faster learning with PFA, with cutoff points at 27 procedures (procedure time) and 26 procedures (fluoroscopy time), compared with 87 and 85 procedures for cryoballoon, respectively. The evolution of mean procedure and fluoroscopy times of the operators over their procedure number are illustrated with LOESS-smoothed trends and segmented regression cutoff points for each technology (Figure 1). Conclusions Pulmonary vein isolation with PFA using the pentaspline catheter is associated with significantly shorter procedure and fluoroscopy times compared with cryoballoon ablation. New operators reach procedural proficiency substantially faster with PFA, as reflected by lower learning curve cutoff points. These findings support the efficiency and rapid learnability of PFA for PVI.X shows segmented regression cutoff
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Schaack et al. (2026) studied this question.
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