What should be immediately done when administering high-flow oxygen to a passenger with respiratory difficulty?

When a passenger is experiencing respiratory difficulty, one of the primary goals in providing care is to ensure their comfort and reduce anxiety. Administering high-flow oxygen is a critical step in assisting someone with breathing issues, but it is equally important to reassure and calm the individual. Anxiety can exacerbate respiratory distress, as it may lead to hyperventilation or panic. By reassuring the passenger, you help to create a calming environment that can make it easier for them to focus on their breathing and improve their overall situation.

In this context, calming the individual not only provides emotional support but may also aid in their physical recovery by minimizing stress on their respiratory system. Encouraging deep, slow breaths while they receive oxygen can enhance the effectiveness of the treatment. Other interventions, like asking the passenger to engage in physical activity, hold their breath, or consume water, are inappropriate as they could further complicate their condition or lead to additional distress. Therefore, the priority in this scenario is to reassure and calm the individual while administering the necessary oxygen therapy.