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A BVM with a reservoir and oxygen source (at least 15 LPM) delivers an oxygen concentration (A) 21%. (B) 40% to 60%. (C) 80%. (D) 100%.
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A BVM with a reservoir and oxygen source (at least 15 LPM) delivers an oxygen concentration

(A) 21%.
(B) 40% to 60%.
(C) 80%.
(D) 100%.

User Yuyutsu
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Final answer:

A BVM with a reservoir and an oxygen source set at least 15 LPM can deliver an oxygen concentration close to 100%.

Step-by-step explanation:

The question relates to the oxygen concentration delivered by a BVM (bag-valve mask) with a reservoir and a high-flow oxygen source. Such a setup can deliver a high oxygen concentration, well above atmospheric levels. A BVM connected to an oxygen source at a flow rate of at least 15 liters per minute (LPM) with a well-fitting face mask and a fully inflated reservoir can indeed deliver an oxygen concentration close to 100% to a patient. Because the oxygen provided is almost pure, and the reservoir ensures that the exhaled gases do not dilute the oxygen being inhaled, the concentration can approach 100% rather than the 21% found in room air.

User Michael Gardner
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