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. 2020 Oct 22;24:622. doi: 10.1186/s13054-020-03335-1

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© The Author(s) 2020

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Example of regional opening/closing pressures (a) and atelectrauma index curves (b) in two representative patients. Distribution of opening/closing pressure in two representative patients (a) and the corresponding representation of atelectrauma index (b). Red pixels: pixels with inspiratory regional LIP along the inspiratory limb of the PV curve and expiratory regional LIP along the expiratory limb of the PV curve, DZ = relative change of pixel impedance. Images of tidal change during the PV maneuver, pixels ventilated > 10% of the max pixel are displayed. AtI = atelectrauma index (percentage of opening/closing pixels on total ventilated pixels)