What is the expected FIO2 range for a simple mask?

The expected FIO2 range for a simple mask is indeed between 0.35 and 0.50. This range indicates the fraction of inspired oxygen that is delivered to the patient when using a simple mask, which is designed to provide supplemental oxygen for patients who require it but do not need a high concentration of oxygen.

A simple mask typically has an oxygen flow rate of 5 to 10 liters per minute, which allows the patient to breathe in a mixture of room air and the supplemental oxygen from the mask. The design of the mask provides limited reservoir capabilities, which is why the FIO2 can vary within this range depending on factors such as the patient's breathing pattern and the mask fit.

Understanding the FIO2 range is crucial for clinicians as they assess and manage the oxygen needs of patients with respiratory issues. The ability to deliver oxygen effectively and safely can significantly impact patient outcomes.