Which of the following clinical findings would you expect in a fully compensated respiratory acidosis?

1. Elevated HCO3–
2. pH below 7.35
3. pH between 7.35 and 7.39
4. Elevated PO2
a. 1 and 3 only
b. 2 and 3 only
c. 2 and 4 only
d. 1, 3, and 4 only

ANS: A
This completely compensated respiratory acidosis is characterized by the same originally ob-served high PaCO2, a pH that is now in the 7.35 to 7.39 range, and a plasma [HCO3–] that is greater than it was before complete compensation took place.

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Fill in the blank(s) with the appropriate word(s).

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