How do you prevent or manage hypoxemia in a sedated patient?

• A. Oxygen supplementation
• B. Administer diuretics
• C. Place in Trendelenburg
• D. Withhold oxygen

Answer: (A)

When someone is sedated, their breathing can slow and airway tone can decrease, making hypoxemia more likely. The most effective way to prevent or manage this is to provide supplemental oxygen. Increasing the inspired oxygen concentration raises the amount of oxygen available to the lungs, helping to maintain adequate arterial oxygen saturation even if breathing becomes shallow or the airway narrows.

In practice, you’d deliver oxygen through a nasal cannula or face mask and closely monitor oxygenation with pulse oximetry (and capnography if available). Always ensure the airway remains open and be prepared to assist ventilation or secure the airway if hypoxemia develops. Diuretics don’t address the immediate oxygen deficit, the Trendelenburg position can worsen breathing mechanics, and withholding oxygen would directly worsen hypoxemia.