pH, 7.30; HCO3, 22 mEq/L; PCO2, 60 mm Hg; PO2, 66 mm Hg
pH, 7.38; HCO3, 22 mEq/L; PCO2, 45 mm Hg; PO2, 96 mm Hg
pH, 7.47; HCO3, 23 mEq/L; PCO2, 25 mm Hg; PO2, 82 mm Hg
pH, 7.30; HCO3, 28 mEq/L; PCO2, 65 mm Hg; PO2, 75 mm Hg