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. 2022 Feb 3;2(2):92–102. doi: 10.1016/j.jointm.2021.12.003

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© 2022 The Authors. Published by Elsevier B.V. on behalf of Chinese Medical Association.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 1 — The respiratory support treatment process of adult severe COVID-19 patients.

COVID-19: Coronavirus disease 2019; ECMO: Extracorporeal membrane oxygenation; FiO₂: Fraction of inspired oxygen; HFNC: High-flow nasal cannula; NIV: Non-invasive ventilation; PaCO₂: Artery partial pressure of carbon dioxide; PaO₂: Partial pressure of arterial oxygen; PEEP: Positive end-expiratory pressure; Pplat: Platform pressure; RR: Respiratory rate; SO₂: Oxygen saturation.