If symptoms of hypoxia worsen immediately after the application of 100% oxygen, you should:

The correct action in this scenario is to remain on the oxygen until symptoms improve, even if the worsening symptoms are initially alarming. When a person is exposed to high altitudes, hypoxia can occur due to a lack of sufficient oxygen. Applying 100% oxygen is a standard treatment for hypoxia because it helps to increase the amount of oxygen available to the body.

If symptoms such as confusion, shortness of breath, or fatigue worsen after starting to use supplemental oxygen, it could indicate that the hypoxia was initially severe or that the body is reacting to the changes in oxygen levels. Continuing the supply of 100% oxygen is crucial because it can help restore normal oxygen levels more effectively than breathing cabin air, which might not provide sufficient oxygen.

Transitioning to cabin air could exacerbate the hypoxic state, potentially leading to more serious complications. Changing the oxygen system might not address the underlying issue if the alternative system does not provide a more effective solution. Trying to breathe quickly and deeply may not necessarily improve oxygenation and could induce hyperventilation, which can create additional problems. Thus, remaining on the supplemental oxygen is the best course of action, allowing the body to stabilize and hopefully recover from the hypoxic symptoms.