Fraction of inspired oxygen
Fraction of Inspired Oxygen (FiO2)
Fraction of Inspired Oxygen (FiO2), pronounced as /ˈfrækʃən ɒv ɪnˈspaɪərd ˈɒksɪdʒən/, is a measure of the concentration of oxygen that a person inhales. The term is often used in medical and clinical research contexts, particularly in the fields of pulmonology and critical care medicine.
Etymology
The term "Fraction of Inspired Oxygen" is derived from its function. "Fraction" refers to the part of the total, "inspired" refers to the inhaled air, and "oxygen" refers to the specific gas being measured. The term is often abbreviated as FiO2.
Definition
FiO2 is defined as the percentage or fraction of the concentration of oxygen in the inhaled air. It is a crucial parameter in the assessment of a patient's respiratory status and the adjustment of supplemental oxygen therapy. In ambient air at sea level, the FiO2 is approximately 21%.
Related Terms
- Oxygen therapy: The administration of oxygen to increase the supply of this gas to the lungs and the body's tissues.
- Hypoxia: A condition in which there is insufficient oxygen in the body or a region of the body.
- Hyperoxia: A condition in which there is an excess of oxygen in the body or a region of the body.
- Ventilator: A machine that helps a person breathe by providing oxygen through a tube.
See Also
External links
- Medical encyclopedia article on Fraction of inspired oxygen
- Wikipedia's article - Fraction of inspired oxygen
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