Question 90 · LEK · Oxygen therapy
What is the maximal inspiratory oxygen concentration achievable when the bag valve mask (Ambu bag) with the reservoir is used and oxygen flow is about 10L/minute?
- A. 45%.
- B. 60%.
- C. 70%.
- D. 85%.
- E. 100%.
Hint
A reservoir allows a much higher FiO2 than a bag without one, but mask leaks and valve design still prevent reaching 100%.
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