What is the oxygen concentration for a non-rebreather mask?

The oxygen concentration for a non-rebreather mask is typically around 90% or higher. This type of mask is designed to deliver a high concentration of oxygen to patients who are in respiratory distress or require supplemental oxygen.

A non-rebreather mask consists of a mask with a one-way valve that allows oxygen to flow from a reservoir bag to the patient while preventing exhaled carbon dioxide from re-entering the bag. This design helps maintain a high oxygen concentration as the patient inhales. The reservoir bag should be kept inflated, ensuring that as the patient breathes, they are receiving pure oxygen.

When considering the other concentrations, values such as 70%, 80%, and 95% generally do not reflect the typical performance of a non-rebreather mask. For most clinical scenarios, the 90% threshold signifies the effectiveness of the device in delivering high flow oxygen, making it a vital tool in emergency and critical care settings. Therefore, the chosen answer accurately represents the intended use and expected efficacy of the mask in providing oxygen to individuals in need.