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Mini Electrodes on Ablation Catheters: Valuable Addition or Redundant Information?—Insights from a Computational Study

Pollnow, Stefan; Greiner, Joachim; Oesterlein, Tobias; Wülfers, Eike M.; Loewe, Axel; Dössel, Olaf

Abstract:
Radiofrequency ablation has become a first-line approach for curative therapy of many cardiac arrhythmias. Various existing catheter designs provide high spatial resolution to identify the best spot for performing ablation and to assess lesion formation. However, creation of transmural and nonconducting ablation lesions requires usage of catheters with larger electrodes and improved thermal conductivity, leading to reduced spatial sensitivity. As trade-off, an ablation catheter with integrated mini electrodes was introduced. The additional diagnostic benefit of this catheter is still not clear. In order to solve this issue, we implemented a computational setup with different ablation scenarios. Our in silico results show that peak-to-peak amplitudes of unipolar electrograms from mini electrodes are more suitable to differentiate ablated and nonablated tissue compared to electrograms from the distal ablation electrode. However, in orthogonal mapping position, no significant difference was observed between distal electrode and mini electrodes electrograms in the ablation scenarios. In conclusion, catheters with mini electrodes bring about additional benefit to distinguish ablated tissue from nonablated tissue in parallel position with high spatial resolution. ... mehr

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Volltext §
DOI: 10.5445/IR/1000070644
Originalveröffentlichung
DOI: 10.1155/2017/1686290
Scopus
Zitationen: 3
Web of Science
Zitationen: 3
Coverbild
Zugehörige Institution(en) am KIT Institut für Biomedizinische Technik (IBT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISSN: 1748-670X, 1748-6718, 1027-3662, 1607-8578
urn:nbn:de:swb:90-706448
KITopen-ID: 1000070644
Erschienen in Computational and mathematical methods in medicine
Band 2017
Seiten 1686290/1–13
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Web of Science
Scopus
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