What is the recommended method for delivering oxygen to patients with ARDS?

Non-invasive positive pressure ventilation is the recommended method for delivering oxygen to patients with Acute Respiratory Distress Syndrome (ARDS) because it helps to improve the efficiency of gas exchange while minimizing the need for intubation. This technique provides support for breathing by increasing intrathoracic pressure, which can help reduce the work of breathing and improve oxygenation.

Non-invasive positive pressure ventilation can assist patients by delivering oxygen under pressure, allowing for better distribution of oxygen throughout the lungs and enhancing ventilation-perfusion matching. This is particularly important in ARDS, where the lung's ability to exchange gases is compromised due to alveolar damage and fluid accumulation.

Other methods such as high-flow oxygen therapy, while effective, may not provide the same level of support in terms of improving ventilation and reducing respiratory effort. Simple face masks and nasal cannulas are more limited in their capacity to deliver adequate oxygen levels or support ventilation in severe cases like ARDS, where mechanical assistance is often required to maintain adequate oxygenation and carbon dioxide removal.