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. 2015 Jun 11;19(1):246. doi: 10.1186/s13054-015-0978-6

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© Taniguchi et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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. 1 — Study flowchart. EtCO₂, End-tidal carbon dioxide concentration; f/VT, Frequency of breaths (respiratory rate) divided by tidal volume; FiO₂, Inspired oxygen fraction; FVC, Forced vital capacity; P_0.1, Airway occlusion pressure at 0.1 second; PEEP, Positive end-expiratory pressure; Pemax, Maximal expiratory pressure; Pimax, Maximal inspiratory pressure; PSV, Pressure support ventilation; SpO₂, Peripheral oxygen saturation; VT, Tidal volume