Global Strategy for Diagnosis, Management, and Prevention of Chronic Obstructive Pulmonary Diseases: updated 2016. Global Initiative for Chronic Obstructive Lung Disease. Bethesda, MD. 2016. Available from http://www.goldcopd.org/uploads/users/files/WatermarkedGlobal%20Strategy%202016(1).pdf. As accessed 23 February 2016.
Recommendation: Oxygen therapy for “stage IV COPD patients with PaO2 at or below 55 mm Hg or SaO2 ≤ 88%, with or without hypercapnia or PaO2 between 55 mm Hg and 60 mm Hg, or SaO2 of 88%, if there is evidence of pulmonary hypertension, peripheral edema suggesting congestive cardiac failure, or polycythemia (hematocrit > 55%) Qaseem A, Snow V, Shekelle P, et al: Diagnosis and management of stable chronic obstructive pulmonary disease: a clinical practice guideline from the American College of Physicians. Ann Intern Med 2007; 147(9):633-638.
Recommendation: Oxygen therapy for COPD patients with PaO2 ≤ 55 mm Hg