In a patient with partially compensated respiratory alkalosis, which of the following blood gas abnormalities would you expect to encounter?
1. Decreased pH
2. Decreased HCO3–
3. Decreased PCO2
4. Increased pH
a. 1, 2, and 4
b. 1 and 3
c. 3 only
d. 2, 3, and 4
ANS: D
Partly compensated respiratory alkalosis is characterized by a low PaCO2, a low [HCO3–], and an alkaline pH—still not quite down in the normal range.
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