The Laboratory Has Just Called with the Arterial Blood Gas

The laboratory has just called with the arterial blood gas (ABG) results on four patients.Which result is most important for the nurse to report immediately to the health care provider?

A) pH 7.34, PaO₂ 82 mm Hg, PaCO₂ 40 mm Hg, and O₂ sat 97%
B) pH 7.35, PaO₂ 85 mm Hg, PaCO₂ 45 mm Hg, and O₂ sat 95%
C) pH 7.46, PaO₂ 90 mm Hg, PaCO₂ 32 mm Hg, and O₂ sat 98%
D) pH 7.31, PaO₂ 91 mm Hg, PaCO₂ 50 mm Hg, and O₂ sat 96%