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In medical terms, oxygen is a vital element for respiration and cellular metabolism. It is a gas that is administered to patients who require supplemental oxygen to support their respiratory function. Oxygen therapy is a common medical intervention that involves the delivery of oxygen through a face mask or nasal cannula to increase the amount of oxygen available in the body.

Oxygen therapy is used to treat a wide range of medical conditions that can affect the lungs or respiratory system, such as pneumonia, chronic obstructive pulmonary disease (COPD), and asthma. It can also be used to support patients with heart failure or other conditions that can cause low levels of oxygen in the blood.

The goal of oxygen therapy is to increase the amount of oxygen in the blood, which can help improve organ function and reduce symptoms such as shortness of breath and fatigue. The appropriate level of oxygen therapy depends on the patient's condition and the underlying cause of their respiratory distress.

In some cases, high levels of oxygen can be toxic and cause lung damage or other health problems. Therefore, oxygen therapy should be administered under the guidance of a healthcare provider and at the appropriate dose to ensure the patient's safety and optimize the therapeutic benefit.

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