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. 2022 Aug 26;24(12):1917–1925. doi: 10.1093/europace/euac148

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© The Author(s) 2022. Published by Oxford University Press on behalf of the European Society of Cardiology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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(A) POLARx cryoablation system: POLARx balloon with POLARMAP spiral mapping catheter inside saline 30 s after initializing the freezing process. Please note the increasing ice formation on the distal hemisphere of the balloon. (B) Periprocedural scene during PVI of the RIPV on the SMART-FREEZE console. Please note the information of the novel diaphragm movement sensor in the left lower corner. (C) Periprocedural recordings with ECG lead I, II, aVF and V6, CS catheter and POLARMAP catheter (spiral) during ablation at the LIPV. Arrows mark the PV spike. CS = coronary sinus catheter; PV = pulmonary vein; LIPV = left inferior PV; RIPV = right inferior PV.