The Nurse Is Aware That the Patient Is in Respiratory

The nurse is aware that the patient is in respiratory failure when the blood gas findings contain which values?

A) PaO₂ 46 mm Hg; PaCO₂ 52 mm Hg
B) PaO₂ 50 mm Hg; PaCO₂ 45 mm Hg
C) PaO₂ 52 mm Hg; PaCO₂ 42 mm Hg
D) PaO₂ 55 mm Hg; PaCO₂ 58 mm Hg