How should you administer oxygen to a patient with suspected carbon monoxide poisoning?

Administering high-flow oxygen via a non-rebreather mask is the most effective method for treating a patient with suspected carbon monoxide poisoning. This approach delivers a high concentration of oxygen, which is critical in displacing carbon monoxide from hemoglobin. Carbon monoxide, when inhaled, binds with hemoglobin much more tightly than oxygen, leading to decreased oxygen delivery to tissues. By providing high-flow oxygen, you significantly increase the partial pressure of oxygen in the blood, which helps to displace carbon monoxide and allows the body to eliminate it more rapidly.

Additionally, using a non-rebreather mask ensures that the patient receives a continuous flow of oxygen while preventing room air from diluting the concentrated oxygen being delivered. This method is essential since mere low-flow oxygen wouldn't provide sufficient levels needed for effective treatment in cases of carbon monoxide poisoning.

Administering oxygen via a bag-valve mask, while it can provide a high flow of oxygen, is more appropriate for patients who are unable to breathe on their own or are experiencing respiratory failure. Providing no oxygen, or using low-flow methods, would be inadequate and dangerous in the context of carbon monoxide exposure.