The Nurse Analyzes the Results of a Patient's Arterial Blood

The nurse analyzes the results of a patient's arterial blood gases (ABGs) .Which finding would require immediate action?

A) The bicarbonate level (HCO₃^-) is 31 mEq/L.
B) The arterial oxygen saturation (SaO₂) is 92%.
C) The partial pressure of CO₂ in arterial blood (PaCO₂) is 31 mm Hg.
D) The partial pressure of oxygen in arterial blood (PaO₂) is 59 mm Hg.