A demand valve resuscitator will deliver up to ___ oxygen at its highest flow rates.

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Multiple Choice

A demand valve resuscitator will deliver up to ___ oxygen at its highest flow rates.

Explanation:
This question tests how much oxygen a demand valve resuscitator can deliver at its highest flow. When it’s connected to a regulated oxygen source, the device fills a reservoir with oxygen and delivers it directly to the patient on inhalation. Because the patient is drawing from that oxygen-rich reservoir with little to no room-air entrainment at high flow, the inspired oxygen fraction can reach 100%. In practice, slight dilution can occur due to leaks or lower-than-ideal flow, but the maximum possible value is 100%.

This question tests how much oxygen a demand valve resuscitator can deliver at its highest flow. When it’s connected to a regulated oxygen source, the device fills a reservoir with oxygen and delivers it directly to the patient on inhalation. Because the patient is drawing from that oxygen-rich reservoir with little to no room-air entrainment at high flow, the inspired oxygen fraction can reach 100%. In practice, slight dilution can occur due to leaks or lower-than-ideal flow, but the maximum possible value is 100%.

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