Which device is less effective for long-term oxygen therapy?

The simple face mask is less effective for long-term oxygen therapy primarily because it does not deliver a consistent and precise concentration of oxygen. While it can provide supplemental oxygen to patients, it is generally used for short-term interventions rather than extended use.

In contrast, the nasal cannula provides more freedom of movement and is more comfortable for prolonged use. It also allows for easier eating and drinking, making it more suitable for patients requiring long-term therapy. The Venturi mask is designed specifically to deliver a precise concentration of oxygen, making it ideal for patients with specific oxygenation needs over extended periods. The non-rebreather mask, while effective for acute situations with high oxygen demands, is also typically used for shorter duration due to its design that can be uncomfortable for long-term wear.

Thus, the simple face mask is less optimal for long-term use as it lacks the necessary features for continuous administration of controlled oxygen therapy.