What does FiO2 stand for?

FiO2 stands for "Fraction of Inspired Oxygen." This term is used to describe the percentage of oxygen present in the gases that a person inhales. Understanding the concept of FiO2 is essential in various medical settings, especially in respiratory care and when managing patients who require oxygen therapy.

In clinical practice, healthcare professionals often need to adjust the FiO2 delivered to a patient to ensure adequate oxygenation, particularly in cases of respiratory distress or failure. The value of FiO2 ranges from 21% (the concentration of oxygen in atmospheric air) to 100% (pure oxygen). Accurate knowledge of FiO2 is crucial for determining appropriate treatment strategies and for monitoring patient responses to oxygen therapy.

Other options, while they may seem plausible, do not accurately capture the definition or clinical relevance of FiO2. Understanding this concept is vital for anyone involved in patient care, particularly those working as combat medics or in emergency medical situations.