What arterial blood gas result is expected in a person experiencing a panic attack?

pH 7.34, PaCO2 45 mm Hg, HCO3 21 mEq/L.

pH 7.32, PaCO2 49 mm Hg, HCO3 26 mEq/L.

pH 7.46, PaCO2 42 mm Hg, HCO3 28 mEq/L.

pH 7.49, PaCO2 28 mm Hg, HCO3 24 mEq/L.