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. 2021 Aug 6;11:16014. doi: 10.1038/s41598-021-95282-2

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© The Author(s) 2021

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/.

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Algorithm for the definition of the weaning success. Patients are classified into the S-group or F-group after the Spontaneous Breathing Trial (SBT). The S-group stands for the group of patients successfully weaned (successful SBT and no need of reintubation). F-group stands for the group of patients with SBT failure and patients with SBT success but with the need of reintubation after 48 h of weaning. Numbers in parentheses represent the number of patients according to the respective criteria.