What is an example of a low-flow oxygen delivery system?

A simple face mask is an example of a low-flow oxygen delivery system because it provides a moderate amount of oxygen by relying on the patient's ability to breathe room air along with the supplemental oxygen. This type of mask can deliver oxygen concentrations of approximately 40% to 60%, depending on the patient's breathing pattern and the flow rate of oxygen.

In a low-flow system like the simple face mask, the oxygen being delivered may mix with the ambient air that the patient inhales, thus not providing a consistent or controlled oxygen concentration. As a result, it is particularly useful in situations where a straightforward means of providing supplemental oxygen is needed but the precise concentration is not critical.

The other options represent different systems. The Venturi mask is a high-flow system that delivers precise oxygen concentrations using color-coded adapters, making it ideal for patients requiring specific oxygen levels. A tracheal mask is typically used in patients with a tracheostomy and provides direct ventilation, while the rebreather mask (which can also be a partial rebreather) is designed to provide higher concentrations of oxygen and is more akin to a high-flow system due to its reservoir bag and design to reduce ambient air mixing.