Which of the Following Statements Are True of the PaO₂/FIO₂

question 26

Multiple Choice

Which of the following statements are true of the PaO₂/FIO₂?
I.A normal range is approximately 380 to 475.
II.Its usefulness as a shunt indicator is limited.
III.A major problem with PaO₂/FIO₂ is that changes in PaCO₂ affect it.
IV.PaO₂/FIO₂ is the least accurate indicator of shunt.

• A) I, II
• B) III, IV
• C) I, II, III, IV
• D) II, III