Paramedic National Registry Practice

For an infant requiring oxygen therapy but with a normal tidal volume, what delivery method provides the highest quality of oxygen?

1. Nasal Cannula

2. Simple Face Mask

3. Non-Rebreather Mask

4. Venturi Mask

The correct answer is: Non-Rebreather Mask

When an infant requires oxygen therapy but has a normal tidal volume, the non-rebreather mask is the most effective delivery method as it provides a higher concentration of oxygen. This type of mask is designed to deliver nearly 100% oxygen to the patient by utilizing a reservoir bag that allows for a constant flow of oxygen. The mask has one-way valves that prevent the exhaled air from mixing with the oxygen being inhaled, ensuring that the infant receives a concentrated dose of oxygen with minimal dilution. The non-rebreather mask is especially beneficial in emergencies where the infant may be experiencing respiratory distress or hypoxemia, as it allows for the rapid administration of high-flow oxygen that can quickly improve oxygen saturation levels. It is essential, however, to monitor the infant continually during treatment to ensure they are tolerating the mask and receiving adequate oxygenation. In contrast, other options such as a nasal cannula or a simple face mask provide lower concentrations of oxygen. A nasal cannula might deliver around 24-44% oxygen, depending on the flow rate, while a simple face mask can provide approximately 40-60%. A Venturi mask is designed for more precise control of oxygen concentration, which can be beneficial in specific clinical situations, but it