You are performing mouth-to-mask ventilations with oxygen connected and set at a flow rate of 15 L/min. What percentage of oxygen is your patient receiving?

When performing mouth-to-mask ventilations with the oxygen connected at a flow rate of 15 L/min, the patient is typically receiving a certain percentage of oxygen due to the combination of the oxygen being delivered directly through the mask and the ambient air being drawn in during the ventilations.

At a flow rate of 15 L/min, the percentage of oxygen delivered to the patient can be approximated. With a well-fitting mask and adequate seal, the patient can receive a higher concentration of oxygen. Generally, mouth-to-mask ventilations can provide oxygen concentrations ranging from around 50% to 65% depending on the circumstances.

In this scenario, the setting of 15 L/min is more conducive to delivering a concentration closer to 55%. This is representative of how effective the seal is and the rate of ventilation, as adequate tidal volumes would also contribute to how effectively the oxygen is mixed with room air.

Therefore, a flow rate of 15 L/min typically correlates with an oxygen concentration around 55%, making this the most accurate percentage for what the patient is receiving in this context.