Difficulty: Medium
Average Score: 68%
Simulated
Which oxygen delivery device can deliver 40-60% FIO2 and is from 5-8 L/min?
Correct answer
B
Rationale
Step 1: Calculate oxygen delivery: With 5-8 L/min flow rate, a simple face mask can deliver 40-60% FIO2.
Step 2: Nasal cannula delivers up to 44% FIO2 at 6 L/min. Incorrect.
Step 3: Aerosol mask delivers variable FIO2, not consistently 40-60%. Incorrect.
Step 4: Face tent is not designed for precise FIO2 delivery and is not typically used for 40-60% FIO2. Incorrect.
Step 5: Therefore, the correct answer is B, as it meets the specific criteria of delivering 40-60% FIO2 at 5-8 L/min.
Step 2: Nasal cannula delivers up to 44% FIO2 at 6 L/min. Incorrect.
Step 3: Aerosol mask delivers variable FIO2, not consistently 40-60%. Incorrect.
Step 4: Face tent is not designed for precise FIO2 delivery and is not typically used for 40-60% FIO2. Incorrect.
Step 5: Therefore, the correct answer is B, as it meets the specific criteria of delivering 40-60% FIO2 at 5-8 L/min.