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. 2019 Nov 22;10:1392. doi: 10.3389/fphys.2019.01392

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Copyright © 2019 Widing, Pellegrini, Larsson and Perchiazzi.

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(s) 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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Recruitment–derecruitment (R/D) in relation to positive end-expiratory pressure (PEEP) level. The graph shows R/D in relation to PEEP level. All numbers are presented in relation to the total end-expiratory lung volume in the analyzed computed tomography (CT) slice. Dots represent observed R/D for one recorded breath. Crosses indicate mean R/D, and triangles indicate the standard deviation. A reduction of R/D in response to increasing PEEP is observed, indicating that increasing PEEP reduces the cyclic opening and closure of the lung.