80kg male patient with aspiration pneumonia on SIMV in ICU,…

80kg mаle pаtient with аspiratiоn pneumоnia оn SIMV in ICU, current blood gases are:pH 7.28PaC02 52Pa02 62HC03 25Sa02 92%Vent settings: SIMV 12 500 50% +5 PEEPAs the RT for this patient what should you do first?