(743) Flow by Oxygen Therapy: Does It Work?

1. Which of the following are considered mechanisms are physiologic benefits of HFNO therapy?

A. Physiological dead space washout of waste gasses including carbon dioxide (CO2)

B. Decreased respiratory rate

C. Increased tidal volume

D. Positive end-expiratory pressure (PEEP)

E. All the above

2. HFNO increases entrainment of room air allowing a more accurate delivery of oxygen, particularly, when compared with conventional oxygen delivery systems.

A. True

B. False

3. Regarding conventional nasal oxygen delivery systems, which of the following statements is most accurate?

A. FiO2 delivered is dependent upon flow rate

B. FiO2 delivered is predictable and adjustable independent of flow rate

C. Is well-tolerated and comfortable to the patient at all flow rates

D. Invokes less damage to nasal mucosa as compared to high flow nasal oxygen (HFNO)

4. With HFNO, nasal cannulas or prongs should occlude _________ of the nostril?

A. Less than 80%

B. Less than 70%

C. Less than 60%

D. Less than 50%

5. Which of the following PaO2/FiO2 ratio defines acute respiratory distress syndrome (ARDS)?

A. > 500

B. 300 - 500

C. 200 - 300

D. < 200

(743) Flow by Oxygen Therapy: Does It Work?

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