Which device is most appropriate for long-term supplemental oxygen administration in the prehospital setting?

Which device is most appropriate for long-term supplemental oxygen administration in the prehospital setting?

• A. Nasal cannula
• B. Mouth-to-mouth
• C. Bag-mask device
• D. Nonrebreathing mask

Answer: (A)

For long-term supplemental oxygen in the prehospital setting, the goal is to keep the patient comfortable and able to communicate while reliably delivering oxygen over extended transport. A nasal cannula fits this need best because it sits under the nostrils and delivers oxygen at low to moderate flow (about 1–6 L/min), giving an FiO2 roughly in the 24–44% range depending on flow and breathing pattern. It’s unobtrusive, easy to use, and allows the patient to speak, drink, or eat as needed during transport, which is important for longer trips. In contrast, a bag-mask device is built for short-term ventilation and requires a tight seal and continuous manual operation, making it impractical for long durations. A nonrebreathing mask can provide a higher FiO2, but it’s less comfortable and relies on a good seal at high flow, which can be hard to maintain on the move. Mouth-to-mouth offers no dedicated oxygen delivery and isn’t suitable for extended supplemental oxygen. So, for sustained prehospital oxygen therapy, the nasal cannula is the most appropriate choice.

For long-term supplemental oxygen in the prehospital setting, the goal is to keep the patient comfortable and able to communicate while reliably delivering oxygen over extended transport. A nasal cannula fits this need best because it sits under the nostrils and delivers oxygen at low to moderate flow (about 1–6 L/min), giving an FiO2 roughly in the 24–44% range depending on flow and breathing pattern. It’s unobtrusive, easy to use, and allows the patient to speak, drink, or eat as needed during transport, which is important for longer trips. In contrast, a bag-mask device is built for short-term ventilation and requires a tight seal and continuous manual operation, making it impractical for long durations. A nonrebreathing mask can provide a higher FiO2, but it’s less comfortable and relies on a good seal at high flow, which can be hard to maintain on the move. Mouth-to-mouth offers no dedicated oxygen delivery and isn’t suitable for extended supplemental oxygen. So, for sustained prehospital oxygen therapy, the nasal cannula is the most appropriate choice.