Chapter 7, Problem 4RQ

In chronic hypoventilation, renal compensation has likely occurred when the

1. ${\text{HCO}}_{\text{3}}{}^{\text{−}}$ is higher than expected for a particular ${\text{Pco}}_{\text{2}}$

2. pH is lower than expected for a particular ${\text{Pco}}_{\text{2}}$

3. ${\text{HCO}}_{\text{3}}{}^{\text{−}}$ is lower than expected for a particular ${\text{Pco}}_{\text{2}}$

4. pH is higher than expected for a particular ${\text{Pco}}_{\text{2}}$

A. 1 only

B. 2 only

C. 1 and 4 only

D. 3 and 4 only