What is one reason why oxygen therapy must be closely monitored?

Oxygen therapy must be closely monitored primarily because it can lead to oxygen toxicity if not properly regulated. When patients receive high concentrations of oxygen for extended periods, they risk developing harmful effects, especially in lung tissue. The breathing system is adapted to manage a certain level of oxygen; exceeding this can result in free radical production and damage to cells, which can lead to various complications.

Monitoring helps ensure that the levels of oxygen are safe and appropriate for the patient's specific needs, especially in patients with underlying respiratory conditions. Proper dosage must be managed to balance therapeutic benefits while minimizing risks, which underscores the importance of careful observation during oxygen therapy.