Commentary on: Poncin W, Baudet L, Braem F, Reychler G, Duprez F, Liistro G, Belkhir L, Yombi JC, De Greef J. Systems on top of nasal cannula improve oxygen delivery in patients with COVID-19: a randomized controlled trial. J Gen Intern Med 2022;37(5):1226–32. doi: 10.1007/s11606-022-07419-2. Epub 8 Feb 2022.
The adverse consequences of continuous exposure to high concentrations of oxygen must be considered before instituting prolonged oxygen therapy in patients with COVID-19. Hypoxaemia is significant in patients with COVID-19, and isolated arterial oxygen pressure (PaO2) improvement may not necessarily translate into any significant survival benefit nor relieve the distress of breathlessness.
Oxygen therapy is important in COVID-19 management. The low-flow nasal cannula (NC) has some drawbacks. The patient’s peak inspiratory flow rate requirements are not met due to significant leakage around the source. A need to improve oxygen...