A client in the emergency department (ED) has baseline arterial blood gas (ABG) of pH 7.35, PaCO2 60 mm Hg, HCO3-35 mEq/L and PaO2 60 mm Hg. Which interpretation should the nurse conclude when analyzing these findings? Reference Ranges: Arterial Blood Gas 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]