A client receiving mechanical ventilation has a pH of 7.26, PaCO2 of 68 mm Hg, and a PaO2 of 92 mm Hg. Which intervention should the nurse implement? Reference Range: pH 17.35 to 7.45] PaCO2 [35 to 45 mm Hg] PaO2 [80 to 100 mm Hg]