What is the recommended treatment action for pulmonary oxygen toxicity?

• A. Increase oxygen exposure
• B. Continue high oxygen until symptoms worsen
• C. Terminate exposure
• D. Switch to nitrogen-rich gas

Answer: (C)

Pulmonary oxygen toxicity happens when the lungs are exposed to high oxygen levels for too long, causing oxidative injury and inflammation. The best management is to stop the high-oxygen exposure promptly and return to normal or lower oxygen levels so the lungs can recover. Exposing the lungs to more oxygen would worsen the injury, and continuing high oxygen until symptoms worsen would be dangerous. Switching to a nitrogen-rich gas isn’t a standard, safe treatment for this condition and could lead to hypoxia if oxygen needs aren’t met. The focus should be on terminating the high-oxygen exposure and using the lowest FiO2 that maintains adequate oxygenation while monitoring the patient.