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. 2018 Mar 13;9:208. doi: 10.3389/fphys.2018.00208

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Copyright © 2018 Ríos-Muñoz, Arenal and Artés-Rodríguez.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Ventricle cancellation in unipolar EGMs. (A) AF ECG with the reference points highlighted in red used for calculating the ventricle pattern. We can see the absence of a P wave, characteristic of AF since the atrium is not properly depolarized. (B) Averaged ventricle pattern in black calculated using 36 segments of unipolar channel i. Segments corresponding to the QR, RS, and ST subintervals are represented in red, green and blue respectively. (C) Unipolar recording after ventricle cancelation with depolarizations in red and their durations annotated between dashed lines in black.