Which of the Following Determines the Fractional Concentration of CO $\times$

question 12

Multiple Choice

Which of the following determines the fractional concentration of CO after 10 seconds of breath holding (F_ACO_T) ?

• A) (F_AHe/F_IHe)\(\times\) F_ICO
• B) Volume inspired divided by F_AHe/F_IHe
• C) Estimation of the ratio F_ICO/F_AHe
• D) Measurement of CO from an alveolar sample