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Impact of High-Power and Very High-Power Short-Duration Radiofrequency Ablation on Procedure Characteristics and First-Pass Isolation During Pulmonary Vein Isolation. | LitMetric

AI Article Synopsis

Article Abstract

Introduction: High-power short-duration (HPSD) radiofrequency ablation has been proposed to produce rapid and effective lesions for pulmonary vein isolation (PVI). We aimed to evaluate the procedural characteristics and the first-pass isolation (FPI) rate of HPSD and very high-power short-duration (vHPSD) ablation compared to the low-power long-duration (LPLD) ablation technique.

Methods: One hundred fifty-six patients with atrial fibrillation (AF) were enrolled and assigned to LPLD, HPSD, or vHPSD PVI. The energy setting was 30, 50, and 90 W in the LPLD, HPSD, and vHPSD groups, respectively. In the vHPSD group, 90 W/4 s energy delivery was used in the QMODE+ setting. In the other groups, ablation index-guided applications were delivered with 30 W (LPLD) or 50 W (HPSD).

Results: Bilateral PVI was achieved in all cases. Compared to the LPLD group, the HPSD and vHPSD groups had shorter procedure time [85 (75-101) min, 79 (65-91) min, and 70 (53-83) min], left atrial dwelling time [61 (55-70) min, 53 (41-56) min, and 45 (34-52) min], total RF time [1,567 (1,366-1,761) s, 1,398 (1,021-1,711) s, and 336 (247-386) s], but higher bilateral FPI rate (57, 78, and 80%) (all -values < 0.01). The use of HPSD (OR = 2.72, 95% CI 1.15-6.44, = 0.023) and vHPSD (OR = 2.90, 95% CI 1.24-6.44, = 0.014) ablation techniques were associated with a higher probability of bilateral FPI. The 9-month AF-recurrence rate was lower in case of HPSD and vHPSD compared to LPLD ablation (10, 8, and 36%, = 0.0001). Moreover, the presence of FPI was associated with a lower AF-recurrence rate at 9-month (OR = 0.09, 95% CI 0.04-0.24, = 0.0001).

Conclusion: Our prospective, observational cohort study showed that both HPSD and vHPSD RF ablation shortens procedure and RF time and results in a higher rate of FPI compared to LPLD ablation. Moreover, the use of HPSD and vHPSD ablation increased the acute and mid-term success rate. No safety concerns were raised for HPSD or vHPSD ablation in our study.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9300971PMC
http://dx.doi.org/10.3389/fcvm.2022.935705DOI Listing

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