At sea level, what would the P_AO₂ equal if the P_B is 760 mm Hg, the PaCO₂ is 40 mm Hg with F_IO₂ 1.0?

Question

Quizplus · Accepted Answer

The P_AO2, or partial pressure of arterial oxygen, can be estimated using the alveolar gas equation, which is P_AO2 = P_B - PaCO2/F_IO₂. Given P_B = 760 mm Hg, PaCO2 = 40 mm Hg, and F_IO₂ = 1.0, the calculation is 760 - (40/1) = 720 mm Hg. However, since none of the provided options match this calculation directly and assuming a possible typo or misunderstanding in the interpretation of the symbols or the provided options, the closest correct choice given the context of typical calculations would be 673 mm Hg, acknowledging a discrepancy in the calculation or provided options.

At Sea Level, What Would the PAO2 Equal If the PB

At Sea Level, What Would the P_AO₂ Equal If the P_B