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. 2021 Mar 26;28(5):333–344. doi: 10.1016/j.pulmoe.2021.03.003

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© 2021 Sociedade Portuguesa de Pneumologia. Published by Elsevier España, S.L.U.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Response to awake spontaneous breathing prone positioning in COVID-19. This cartoon shows that the blood is diverted from the hyperperfused areas of the lung after prone positioning. Amelioration in blood oxygenation might be explained by a new equilibrium in the V/Q ratio.