The nurse is caring for an older adult client with heart failure (HF) whose arterial blood gas (ABG) results include a pH 7.38, PaCO2 40 mm Hg, HCO3- 24 mEq/L (24 mmol/L), and a PaO2 90 mm Hg. Which action should the nurse implement? Reference Range: Arterial Blood Gas (ABG) pH [7.35 to 7.45] PaCO2 [35 to 45 mm Hg] HCO3- [21 to 28 mEq/L (21 to 28 mmol/L)] PaO2 [80 to 100 mm Hg]