What oxygen flow rate does a simple face mask typically provide?

A simple face mask typically delivers an oxygen flow rate of 6 to 10 liters per minute. This range is effective because it allows for a substantial amount of oxygen to be provided directly to the patient while still allowing for the inhalation of room air.

At flow rates below this range, the mask may not provide sufficient oxygen concentration, while flow rates above may lead to discomfort and increased exhalation of CO2 without adequate ventilation. The design of the mask and its fit on the patient's face help to create a reservoir of oxygen-rich air, which is more concentrated than what occurs in normal breathing. Thus, the range of 6 to 10 liters per minute accurately reflects the capability of a simple face mask to deliver supplementary oxygen effectively for patients requiring respiratory support.