Key references: Periprocedural management of patients with respiratory disease

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Mokhlesi B, Masa JF, Brozek JL, Gurubhagavatula I, Murphy PB, Piper AJ, et al. Evaluation and management of obesity hypoventilation syndrome. An Official American Thoracic Society clinical practice guideline. Am J Respir Crit Care Med 2019;200(3):e6–e24. https://www.ncbi.nlm.nih.gov/pubmed/31368798
Wijeysundera DN, Beattie WS, Hillis GS, Abbott TEF, Shulman MA, Ackland GL, et al. Integration of the Duke Activity Status Index into preoperative risk evaluation: a multicentre prospective cohort study. Br J Anaesth 2020;124(3):261–70. https://www.ncbi.nlm.nih.gov/pubmed/31864719
Wijeysundera DN, Pearse RM, Shulman MA, Abbott TEF, Torres E, Ambosta A, et al. Assessment of functional capacity before major non-cardiac surgery: an international, prospective cohort study. Lancet 2018;391(10140):2631–40. https://www.ncbi.nlm.nih.gov/pubmed/30070222