Oxygenation index
Oxygenation Index
Oxygenation Index (Pronunciation: Ox-y-gen-a-tion In-dex) is a medical term used to measure the severity of lung disease. It is a calculation used in intensive care medicine to assess the patient's oxygenation status.
Etymology
The term "Oxygenation Index" is derived from the words "Oxygen", a chemical element that is a crucial part of the air we breathe, and "Index", which means an indicator or measure of something.
Calculation
The Oxygenation Index is calculated using the formula:
Oxygenation Index = (FiO2 x MAP x 100) / PaO2
Where:
- FiO2 (Fraction of Inspired Oxygen) is the concentration of oxygen in the air the patient breathes.
- MAP (Mean Airway Pressure) is the average pressure in a patient's airways over a complete respiratory cycle.
- PaO2 (Partial Pressure of Oxygen) is a measure of the amount of oxygen in the blood.
Related Terms
- Hypoxemia: A condition in which there is a deficiency of oxygen in the blood.
- Hyperoxia: A condition where there is an excess of oxygen in the body.
- Ventilator: A machine that helps a patient breathe by giving oxygen through a tube.
Clinical Significance
The Oxygenation Index is used to assess the severity of lung diseases such as Acute Respiratory Distress Syndrome (ARDS) and Pneumonia. It helps in determining the need for more aggressive treatments like Extracorporeal Membrane Oxygenation (ECMO).
External links
- Medical encyclopedia article on Oxygenation index
- Wikipedia's article - Oxygenation index
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