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. 2017 Jul 7;21:170. doi: 10.1186/s13054-017-1761-7

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© The Author(s). 2017

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 — Examples of tracings from one representative patient. From top to bottom, airway pressure (Paw), flow and electrical activity of the diaphragm (EAdi) tracings of a representative patient are shown during pneumatically triggered pressure support (PS _P), neurally adjusted ventilatory assist (NAVA) and neurally controlled pressure support (PS _N). The arrow indicates an ineffective effort during PS_P