What happens to the P(A?a)O2 with mismatch and shunt?
a. It increases with mismatch and decreas-es with shunt.
b. It decreases with both mismatch and shunt.
c. It increases with both mismatch and shunt.
d. It does not change.
ANS: C
A mismatch and shunt both result in elevated P(A−a)O2 levels.
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