Which of the following relationships regarding the PACO2 is correct?
A. PACO2 ? VCO2 ? A
B. VCO2/ A ? PACO2
C. VCO2 + AVA ? PACO2
D. VCO2 / PACO2 ? A
?ANS: B
A. Incorrect response: See explanation B.
B. Correct response: The relationship between the CO2 production and the alveolar ventilation in terms of the alveolar partial pressure of CO2 is as follows:
CO2/ A ∝ PACO2
C. Incorrect response: See explanation B.
D. Incorrect response: See explanation B.
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