A nurse is caring for a client who is postoperative and has a respiratory rate of 9/min secondary to general anesthesia effects and incisional pain. Which of the following ABG values indicates the client is experiencing respiratory acidosis?
A. pH 7.50, PO2 95mmHg, PaCO2 25mm Hg, HCO3 22 mEq/L
B. pH 7.50, PO2 87mmHg, PaCO2 35mm Hg, HCO3 30 mEq/L
C. pH 7.30, PO2 90mmHg, PaCO2 35mm Hg, HCO3 20 mEq/L
D. pH 7.30, PO2 80mmHg, PaCO2 55mm Hg, HCO3 22 mEq/L