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. 2023 Jan 12;9:1068428. doi: 10.3389/fmed.2022.1068428

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Copyright © 2023 Cour, Guérin, Degivry, Argaud and Louis.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Bench model. High flow oxygen therapy (HFOT) devices were connected to the head of a manikin designed for cardiopulmonary resuscitation training through either a nasal cannula (A) or a tracheostomy cannula (B) directly inserted into a dedicated hole available in the neck of the manikin head. The mouth was kept closed and the esophagus was clamped. The trachea of the manikin was connected to a lung simulator (ASL5000, Ingmar Medical), set at 40 ml/cmH₂O compliance, 10 cmH₂O/L/s resistance, and sinusoidal inspiratory effort.