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. 2022 Jun 30;13:906302. doi: 10.3389/fphys.2022.906302

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Copyright © 2022 Mi, Chi, Yuan, He, Long, Frerichs and Zhao.

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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Ratio between the arterial partial pressure of oxygen and fraction of inspired oxygen (PaO₂/FiO₂) in different positions of the two groups. PaO₂/FiO₂ in the LOP group was significantly increased during prone position compared with supine position. No significant difference was observed in the NLOP group. *p < 0.05 compared with supine position.