A hysterical patient is hyperventilating and doubles his alveolar ventilation. If his initial alveolar PAco2 was 40 mm Hg, and his CO2 production rema

[Kathryn]

#march2020mccqe1

A hysterical patient is hyperventilating and doubles his alveolar ventilation. If his initial alveolar PAco2 was 40 mm Hg, and his CO2 production remains unchanged, what will his alveolar Pco2 be on hyperventilation?
(A) 80 mm Hg
(B) 60 mm Hg
(C) 20 mm Hg
(D) 10 mm Hg
(E) 4 mm Hg