Local impedance drop–guided versus lesion size index–guided pulmonary vein isolation

• Published in: Journal of interventional cardiac electrophysiology 2024-12, Vol.67 (9), p.2051-2058
• Main Authors: Lian, Evgeny, Pantlik, Robert, Maslova, Vera, Willert, Sven, Moser, Fabian, Remppis, Andrew, Frank, Derk, Demming, Thomas
• Format: Article
• Language: English
• Subjects: Ablation; Aged; Arrhythmia; Atrial Fibrillation - surgery; Cardiac arrhythmia; Cardiology; Catheter Ablation - methods; Contact force; Effectiveness; Electric Impedance; Female; Humans; Impedance; Lesions; Lungs; Male; Medicine; Medicine & Public Health; Middle Aged; Original Research; Pulmonary Veins - surgery; Radio frequency; Recurrence; Retrospective Studies; Surgery, Computer-Assisted - methods; Treatment Outcome; Veins
• ISSN: 1572-8595; 1383-875X; 1572-8595
• DOI: 10.1007/s10840-024-01870-3

Background Local tissue impedance drop (LID) and lesion size index (LSI) technologies are valuable for predicting effective lesion formation. This study compares the acute and long-term efficacy of LID-guided versus LSI-guided pulmonary vein isolation (PVI) for atrial fibrillation treatment. Methods We retrospectively analyzed two patient groups undergoing radiofrequency PVI. In the LID-guided group ( n  = 35), ablation was performed without contact force monitoring, stopping at the LID plateau (target LID 12 Ohm posterior, 16 Ohm anterior). In the LSI-guided group ( n  = 31), ablation used contact force information with target LSI (5 anterior, 4 posterior). Both groups utilized a power of 40 W anterior and 30 W posterior, with