Supplemental oxygen is indicated for any patient with:

• A. Hypertension
• B. Respiratory distress
• C. Seizures
• D. Chest pain

Answer: (B)

Oxygen therapy is used to correct and prevent tissue hypoxia when gas exchange is compromised. In respiratory distress, the body isn’t able to oxygenate blood effectively due to problems with the lungs, airways, or heart, so giving supplemental oxygen helps raise arterial oxygen levels and supports tissues while the underlying cause is addressed. Hypertension, seizures, or chest pain do not by themselves indicate a need for oxygen—there’s no guaranteed problem with oxygenation in those conditions unless hypoxemia or respiratory compromise is present.