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Supplemental oxygen is commonly used and is fundamental to the treatment of hypoxemia. This video focuses on the administration of supplemental oxygen in adult patients in an acute care setting through a nasal cannula, simple face mask, face tent, Venturi mask, nonrebreather face mask, and high-flow nasal cannula.

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Disclosure forms provided by the authors are available with the full text of this article at NEJM.org.

No potential conflict of interest relevant to this article was reported.

From the Department of Anesthesiology, Boston Medical Center, Boston (S.R., B.N., A.N., R.O.), and the University of Rome, Rome (F.B., F.P.).

Address reprint requests to Dr. Ortega at the Department of Anesthesiology, Boston Medical Center, 750 Albany St., Boston, MA 02118, or at [email protected] .

July 15, 2021 N Engl J Med 2021; 385:e9 DOI: 10.1056/NEJMvcm2035240

Julie R. Ingelfinger, M.D., Editor

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