What is FiO₂?
A) The amount of oxygen delivered via an airway adjunct in liters per minute
B) The concentration of oxygen in our inhaled air, which is referred to as the fraction of inspired oxygen
C) The concentration of gases in our expired air, which is referred to as the fraction of used oxygen
D) The flow rate of gases provided to the patient by mask or nasal cannula

Question

Quizplus · Accepted Answer

FiO₂ stands for the fraction of inspired oxygen, which is the concentration of oxygen in the air we breathe in. It is usually represented as a percentage or decimal value. For example, room air has a FiO₂ of approximately 21%, while supplemental oxygen can increase the FiO₂ to 100%. The FiO₂ is important in assessing and managing a patient's oxygenation status, particularly in critical care settings.

What Is FiO₂