When should a respiratory therapist consider using a higher flow oxygen device for a patient?

Using a higher flow oxygen device is particularly indicated when a patient displays signs of respiratory distress. This is because respiratory distress can indicate inadequate oxygenation or ventilation, and a higher flow device can provide the increased oxygen concentration and delivery needed to support the patient’s respiratory demands. High-flow systems, such as high-flow nasal cannulas or non-rebreather masks, can deliver oxygen at rates substantial enough to help alleviate hypoxemia and support the patient's breathing more effectively.

In contrast, using a higher flow oxygen device for patients with normal respiration may not be necessary and could potentially lead to complications such as oxygen toxicity or respiratory depression. Similarly, during a routine examination, a patient might not require the additional oxygen if they are stable and asymptomatic. As for patients on mechanical ventilation, while they do require adequate oxygenation, the management of their oxygen levels typically depends on the settings of the ventilator itself rather than adapting to a higher flow device unless a specific condition arises that warrants such action.