1. Oxygenation “Part of the Dumb-It-Down Lecture Series”

2. How do we support a patient’s pulmonary function? Oxygenation Nasal Cannula Mask/Venti-Mask Partial Non-Rebreather/Full Non-Rebreather Supplemental O2 given through a device helping maintain ventilation Ventilation Ambu-bag Mouth to Mouth BiPAP/CPAP Invasive Mechanical Ventilation

3. The Most Misunderstood Equipment in the Hospital…

4. What is the FiO2 of a Nasal Cannula?

5. Guess-ta-mation

6. Why isn’t 100% FiO2 Achieved?

7. Normal Flow Rate is 25L/min, so if a nasal cannula is delivering 2L/min… FiO2 = [(% of flow from NC) + (% of flow from RA)]/ total flow FiO2 = [(2)(1) + (23)(0.21)]/25 = 0.27

8. Why isn’t 100% FiO2 Achieved? But the percent of flow obtained from the nasal cannula is variable…

10. Monitoring Oxygenation

11. Pulse Oximetry

12. When is Pulse Oximetry Wrong? Carbon Dioxide/Cyanide (falsely high) Nail Polish (falsely low) Methemoglobinemia (falsely low) Hypoxia (falsely low) Hypotension (wont pick up arterial pulsations)

13. Pulse Oximetry is not PaO2 The 40-50-60, 70-80-90 Rule: PaO2SaO2 4070 5080 6090

14. Pulse Oximetry is not PaO2