Oxygen delivery through a HAFOE (high air flow with oxygen enrichment) mask:

Oxygen delivery through a HAFOE (high air flow with oxygen enrichment) mask:
 A) is affected by the patient's tidal volume
  B) is affected by the patient's respiratory rate
  C) is affected by the patient's breathing pattern
  D) none of the above

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Q. 2  A HAFOE (high air flow with oxygen enrichment) is set at 24. What is the air-to-oxygen entrainment ratio?
 A) 5:1
  B) 8:1
  C) 10:1
  D) 25:1

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Q. 3  A HAFOE (high air flow with oxygen enrichment) mask is set at 24, and the oxygen flowmeter is running at 3 L/min. What is the total flow to the patient?
 A) 74 L/min
  B) 84 L/min
  C) 94 L/min
  D) 104 L/min

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Q. 4  A HAFOE (high air flow with oxygen enrichment) is set at 35. What is the air-to-oxygen entrainment ratio?
 A) 2:1
  B) 3:1
  C) 4:1
  D) 5:1

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Q. 5  A high-flow oxygen delivery device is set at 35, and the oxygen flowmeter is set at 5 L/min. What is the total flow to the patient?
 A) 15 L/min
  B) 20 L/min
  C) 30 L/min
  D) 35 L/min