The role of local impedance drop in the acute lesion efficacy during pulmonary vein isolation performed with a new contact force sensing catheter—A pilot study

Nándor Szegedi, Zoltán Salló, Péter Perge, Katalin Piros, Vivien Klaudia Nagy, István Osztheimer, Béla Merkely and László Gellér

PLOS ONE, 2021, vol. 16, issue 9, 1-11

Abstract: Introduction: Our pilot study aimed to evaluate the role of local impedance drop in lesion formation during pulmonary vein isolation with a novel contact force sensing ablation catheter that records local impedance as well and to find a local impedance cut-off value that predicts successful lesion formation. Materials and methods: After completing point-by-point radiofrequency pulmonary vein isolation, the success of the applications was evaluated by pacing along the ablation line at 10 mA, 2 ms pulse width. Lesions were considered successful if loss of local capture was achieved. Results: Out of 645 applications, 561 were successful and 84 were unsuccessful. Compared to the unsuccessful ablation points, the successful applications were shorter (p = 0.0429) and had a larger local impedance drop (p 21.80 Ohms on the anterior wall and > 18.30 Ohms on the posterior wall significantly increases the probability of creating a successful lesion.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0257050

DOI: 10.1371/journal.pone.0257050

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