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. 2015 Nov 2;19:380. doi: 10.1186/s13054-015-1097-0

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© Lemiale et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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.

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Fig. 3 — Respiratory rate (panel a) and heart rate (panel b) changes during the 2-h study period. The open bars represent the high-flow nasal oxygen group and the gray bars the Venturi mask group. ∆60-0 indicates the difference between randomization and the 1-h time point. ∆120-60 indicates the difference between the 1-h and 2-h time points. ∆120-0 indicates the difference between randomization and the 2-h time point