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. 2024 Jan 31;50(2):234–246. doi: 10.1007/s00134-023-07305-3

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial 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-nc/4.0/.

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Fig. 1 — Number of patients experiencing abnormally low and high partial pressure of carbon dioxide-PaCO₂-episodes during the ICU stay. The bars indicate the number of patients with 0, 1, 2, and 3 episodes of abnormal PaCO₂. Incidence rates (as number of episodes per 1 person-day) of hypocapnia and hypercapnia during ICU stay are provided. IR, incidence rate; CI, Confidence Interval