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Uses. Oxygen is of great importance in the chemical and the iron and steel industries. Its major use is in steel production, for example in the Bessemer process. The oxyacetylene torch is another important industrial application.Oxygen is utilized in medicine in the treatment of respiratory diseases and is mixed with other gases for respiration in submarines, high-flying aircraft, and spacecraft.ts major use is in steel production, for example in the Bessemer process. The oxyacetylene torch is another important industrial application. Oxygen is utilized in medicine in the treatment of respiratory diseases and is mixed with other gases for respiration in submarines, high-flying aircraft, and spacecraft.
Why It Is Used. Your doctor will determine how much oxygen you need with a blood test called arterial blood gas and another test called oximetry. These tests measure the levels of oxygen in the blood. Long-term oxygen therapy is given to people with heart failure who have low levels of oxygen in their blood.It is given to increase the amount of oxygen in the blood to provide for the body's needs. Oxygen therapy can decrease shortness of breath and allow you to do more.ong-term oxygen therapy is given to people with heart failure who have low levels of oxygen in their blood. It is given to increase the amount of oxygen in the blood to provide for the body's needs. Oxygen therapy can decrease shortness of breath and allow you to do more.