It is a colorless and odorless gas. It is the most abundant element in nature and essential for the life of all aerobic organisms. Its symbol is O².
Oxygen therapy is oxygen administration to the patient for the purpose of achieving good oxygenation levels. It is performed with masks; nasal cannulas, also called nasal prongs; mechanical ventilation or respirator.
Remember that its use does not cause dependency nor does the body become “accustomed” to its use.