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. 2024 Mar 14;28:75. doi: 10.1186/s13054-024-04845-y

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© The Author(s) 2024

Open Access This 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. 1 — Representative examples of the airway pressure (P_aw) deformation patterns classification on the pressure–time waveform. Red arrows show the initiation of the patient-triggered breath. The P_aw deformation in the moderate, severe and severe with double triggering tracings is represented by a solid black line on the P_aw tracings. The asterisk shows the second breath added to the first one in the severe breaths with double triggering (breath stacking)