Which of the following statements is NOT true about the effect of / imbalances on O2 and carbon dioxide exchange?

a. Blood leaving high units has a high PO2 and a low PCO2.
b. Blood leaving low units has a low PO2 and a high PCO2.
c. High units can compensate for high PCO2 levels from low units.
d. High units can compensate for low PO2 levels from low units.

ANS: D
However, the shape of the dissociation curves dictates that a high / unit can reverse the high PCO2 but not the low PO2.