ArticleJournal of cardiovascular electrophysiology2026
Comparison of Pentaspline Pulsed Field Ablation Catheter Mapping Modes to Assess Pulmonary Vein Isolation for Paroxysmal Atrial Fibrillation.
Article in Journal of cardiovascular electrophysiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundWe assessed the electro-anatomic mapping (EAM) capabilities of a pulsed field ablation (PFA) system previously guided by fluoroscopy to assess acquisition modes, and effects of near and far-field signal.
methodsAfter pulmonary vein isolation (PVI) proven by pacing to check entrance and exit block, EAM was performed in 2 modes with the Faraview system during CS pacing. Mode 1 utilized bipoles between electrode 3 of each adjacent catheter spline. Mode 2 utilized a pseudo-unipole between electrode 3 and a combination of electrodes 1, 2, and 4 on individual splines. Signals and voltage map demonstration of PVI were compared with pacing assessment. Two observers assessed the maps with a third observer to resolve discrepancies.
resultsFifteen patients (87% male, aged 58 ± 9 years) had PVI then mapping with the Faraview system. Pacing confirmed isolation of all pulmonary veins. Bipolar mapping (mode 1) displayed multiple apparent PV signals: only 32/61 (52%) of veins appeared isolated. On pseudo-unipolar mapping 59/61 (97%) of veins appeared isolated. The majority of variance in assessment (70.4%) was explainable by the mapping method with minimal variance attributed to observer.
conclusionsPseudo-unipolar EAM Faraview mode appears the most accurate for assessment post-PVI compared with bipolar mode.
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