ArticleInternational journal of cardiology. Heart & vasculature2022
Role of catheter location on local impedance measurements and clinical outcome with the new direct sense technology in cardiac ablation procedures.
Article in International journal of cardiology. Heart & vasculature, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- "From Surface to Substrate: Advancing VT Ablation Strategies for Deep Arrhythmic Substrates"-A Review of Emerging Techniques in Intramural Lesion Formation.Reviews in cardiovascular medicine · 2026Review
- Local impedance drop-guided versus lesion size index-guided pulmonary vein isolation.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2024Article
- Recent highlights from theInternational journal of cardiology. Heart & vasculature · 2024Article
- Impact of contact force on the lesion characteristics of very high-power short-duration ablation using a QDOT-MICRO catheter.Journal of arrhythmia · 2024Article
Corrections and comments
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Authors and funding
12 authors.
Funding
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Abstract
Background: A novel catheter technology (direct sense, DS) enables periprocedural local impedance (LI) measurement for estimation of tissue contact during radiofrequency ablation (RFA) for real-time assessment of lesion generation. This measure reflects specific local myocardial conduction properties in contrast to the established global impedance (GI) using a neutral body electrode. Our study aimed to assess representative LI values for the cardiac chambers, to evaluate LI drop in response to RF delivery and to compare those values to established GI measures in patients undergoing RFA procedures. Methods and Results: Seventy-three patients undergoing RFA with the DS technology were included. Within the cardiac chambers, baseline LI was significantly different, with the highest values in the left atrium (LA 107.5 ± 14.3 Ω; RV 104.6 Ω ± 12.9 Ω; LV 100.7 Ω ± 11.7 Ω, and RA 100.5 Ω ± 13.4 Ω). Baseline LI was positively correlated to the corresponding LI drop during RF delivery (R Conclusion: We provide detailed information on LI measures in electrophysiological procedures with significant differences within the cardiac chambers highlighting that RFA-related LI drop can serve as a promising surrogate for real-time assessment of lesion generation. Guiding the electrophysiologist in RFA procedures, this additional information promises to improve safety profile and success rates in the interventional treatment of arrhythmias.
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