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Background <p>Short-duration radiofrequency ablation is designed to enhance efficiency of pulmonary vein isolation (PVI). We investigated the performance of a novel stability algorithm (STABILITY +).</p> Methods <p>In a prospective, single-center study, consecutive patients undergoing first-time PVI were included. Patients were categorized into four groups: Group 1, Hybrid (anterior, 50 W, 550 AI; posterior, 90 W 4&#xa0;s) using Viistag; Group 2, Hybrid using STABILITY + ; Group 3, 90 W (anterior and posterior, 90 W 4&#xa0;s) using Visitag; Group 4, 90 W using STABILITY + . Clinical, procedural and follow-up data were systematically collected.</p> Results <p>A total of 268 patients were included. In total, 130 patients had Hybrid ablation while 138 underwent 90-W ablation. Procedure time was comparable in Groups 1, 2, and 3 however was lower in Group 4 (65&#xa0;min, 65&#xa0;min, 70&#xa0;min, 54&#xa0;min, <i>p</i> &lt; 0.001). RF-time was longer in Group 1 and 2 vs 3 and 4 (11.6&#xa0;min, 9.7&#xa0;min, 4.5&#xa0;min, 5.2&#xa0;min, <i>p</i> &lt; 0.001). First-pass isolation rates were comparable between all 4 groups (88%, 91%, 83.9%, 90%, <i>p</i> = 0.480). Freedom from arrhythmia at 6&#xa0;months was also comparable (9%, 9%, 16.6%, 10.4%, <i>p</i> = 0.341). Complications were comparable and low and restricted to vascular access-related complications (2%, 1%, 0%, 2%, <i>p</i> = 0.388).</p> Conclusions <p>Irrespective of the mode of ablation, the novel STABILITY + algorithm can be used in PVI ablations without compromising safety and efficiency and has the potential to improve first-pass isolation using 90-W HPSD ablation.</p>

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Performance of a new respiratory compensated stability algorithm during radiofrequency ablation for atrial fibrillation

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • Benjamin Berte,
  • Chiara Valeriano,
  • Sophie Rissotto,
  • Alona Sigal,
  • Ofer Klemm,
  • Saagar Mahida,
  • Tom De Potter,
  • Helmut Pürerfellner,
  • Richard Kobza

摘要

Background

Short-duration radiofrequency ablation is designed to enhance efficiency of pulmonary vein isolation (PVI). We investigated the performance of a novel stability algorithm (STABILITY +).

Methods

In a prospective, single-center study, consecutive patients undergoing first-time PVI were included. Patients were categorized into four groups: Group 1, Hybrid (anterior, 50 W, 550 AI; posterior, 90 W 4 s) using Viistag; Group 2, Hybrid using STABILITY + ; Group 3, 90 W (anterior and posterior, 90 W 4 s) using Visitag; Group 4, 90 W using STABILITY + . Clinical, procedural and follow-up data were systematically collected.

Results

A total of 268 patients were included. In total, 130 patients had Hybrid ablation while 138 underwent 90-W ablation. Procedure time was comparable in Groups 1, 2, and 3 however was lower in Group 4 (65 min, 65 min, 70 min, 54 min, p < 0.001). RF-time was longer in Group 1 and 2 vs 3 and 4 (11.6 min, 9.7 min, 4.5 min, 5.2 min, p < 0.001). First-pass isolation rates were comparable between all 4 groups (88%, 91%, 83.9%, 90%, p = 0.480). Freedom from arrhythmia at 6 months was also comparable (9%, 9%, 16.6%, 10.4%, p = 0.341). Complications were comparable and low and restricted to vascular access-related complications (2%, 1%, 0%, 2%, p = 0.388).

Conclusions

Irrespective of the mode of ablation, the novel STABILITY + algorithm can be used in PVI ablations without compromising safety and efficiency and has the potential to improve first-pass isolation using 90-W HPSD ablation.