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. 2022 Jun 12;12(6):e059110. doi: 10.1136/bmjopen-2021-059110

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© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Flow chart for lung lesion case-finding in COVID-19 survivors. *Altered oximetry: resting SpO₂ ≤90% or a decrease in SpO₂ of ≥4% during the 1 min sit and stand test. **Altered CXR: COVID-19 findings, including bilateral linear and/or reticular opacities, especially peripheral opacities. †The in-person consultation also should start with oximetry and mMRC examinations. ††The suggestion is to perform plethysmography with diffusion capacity measure. CXR, chest X-ray; FVC, forced vital capacity; LLN, lower limit of normal; mMRC, modified Medical Research Council dyspnoea scale.