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. 2019 Jun 18;19:203. doi: 10.1186/s12887-019-1579-3

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© The Author(s). 2019

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 — Blood gases variations in different subgroups of diagnosis immediately before and after surfactant administration. a: PaO₂ variations before and after treatment. b: PaCO₂ variations before and after treatment. c: pH variations before and after treatment. d: P/F variations before and after treatment. Legend: Data are expressed as means and standard errors. PaO₂ = oxygen arterial pressure; PaCO₂ = carbon oxide arterial pressure; P/F = oxygen arterial pressure inspired oxygen fraction ratio